gcc/ada/prj-nmsc.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             P R J . N M S C                              --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2000-2009, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with GNAT.Case_Util;             use GNAT.Case_Util;
  27 with GNAT.Directory_Operations;  use GNAT.Directory_Operations;
  28 with GNAT.Dynamic_HTables;
  29
  30 with Err_Vars; use Err_Vars;
  31 with Opt;      use Opt;
  32 with Osint;    use Osint;
  33 with Output;   use Output;
  34 with Prj.Err;  use Prj.Err;
  35 with Prj.Util; use Prj.Util;
  36 with Sinput.P;
  37 with Snames;   use Snames;
  38 with Targparm; use Targparm;
  39
  40 with Ada.Characters.Handling;    use Ada.Characters.Handling;
  41 with Ada.Directories;            use Ada.Directories;
  42 with Ada.Strings;                use Ada.Strings;
  43 with Ada.Strings.Fixed;          use Ada.Strings.Fixed;
  44 with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants;
  45
  46 package body Prj.Nmsc is
  47
  48    No_Continuation_String : aliased String := "";
  49    Continuation_String    : aliased String := "\";
  50    --  Used in Check_Library for continuation error messages at the same
  51    --  location.
  52
  53    type Name_Location is record
  54       Name     : File_Name_Type;  --  ??? duplicates the key
  55       Location : Source_Ptr;
  56       Source   : Source_Id := No_Source;
  57       Found    : Boolean := False;
  58    end record;
  59    No_Name_Location : constant Name_Location :=
  60      (No_File, No_Location, No_Source, False);
  61    package Source_Names_Htable is new GNAT.Dynamic_HTables.Simple_HTable
  62      (Header_Num => Header_Num,
  63       Element    => Name_Location,
  64       No_Element => No_Name_Location,
  65       Key        => File_Name_Type,
  66       Hash       => Hash,
  67       Equal      => "=");
  68    --  Information about file names found in string list attribute
  69    --  (Source_Files or Source_List_File).
  70    --  Except is set to True if source is a naming exception in the project.
  71    --  This is used to check that all referenced files were indeed found on the
  72    --  disk.
  73
  74    type Unit_Exception is record
  75       Name : Name_Id;  --  ??? duplicates the key
  76       Spec : File_Name_Type;
  77       Impl : File_Name_Type;
  78    end record;
  79
  80    No_Unit_Exception : constant Unit_Exception := (No_Name, No_File, No_File);
  81
  82    package Unit_Exceptions_Htable is new GNAT.Dynamic_HTables.Simple_HTable
  83      (Header_Num => Header_Num,
  84       Element    => Unit_Exception,
  85       No_Element => No_Unit_Exception,
  86       Key        => Name_Id,
  87       Hash       => Hash,
  88       Equal      => "=");
  89    --  Record special naming schemes for Ada units (name of spec file and name
  90    --  of implementation file). The elements in this list come from the naming
  91    --  exceptions specified in the project files.
  92
  93    type File_Found is record
  94       File     : File_Name_Type  := No_File;
  95       Found    : Boolean         := False;
  96       Location : Source_Ptr      := No_Location;
  97    end record;
  98
  99    No_File_Found : constant File_Found := (No_File, False, No_Location);
 100
 101    package Excluded_Sources_Htable is new GNAT.Dynamic_HTables.Simple_HTable
 102      (Header_Num => Header_Num,
 103       Element    => File_Found,
 104       No_Element => No_File_Found,
 105       Key        => File_Name_Type,
 106       Hash       => Hash,
 107       Equal      => "=");
 108    --  A hash table to store the base names of excluded files, if any
 109
 110    package Object_File_Names_Htable is new GNAT.Dynamic_HTables.Simple_HTable
 111      (Header_Num => Header_Num,
 112       Element    => Source_Id,
 113       No_Element => No_Source,
 114       Key        => File_Name_Type,
 115       Hash       => Hash,
 116       Equal      => "=");
 117    --  A hash table to store the object file names for a project, to check that
 118    --  two different sources have different object file names.
 119
 120    type Project_Processing_Data is record
 121       Project         : Project_Id;
 122       Source_Names    : Source_Names_Htable.Instance;
 123       Unit_Exceptions : Unit_Exceptions_Htable.Instance;
 124       Excluded        : Excluded_Sources_Htable.Instance;
 125
 126       Source_List_File_Location : Source_Ptr;
 127       --  Location of the Source_List_File attribute, for error messages
 128    end record;
 129    --  This is similar to Tree_Processing_Data, but contains project-specific
 130    --  information which is only useful while processing the project, and can
 131    --  be discarded as soon as we have finished processing the project
 132
 133    package Files_Htable is new GNAT.Dynamic_HTables.Simple_HTable
 134      (Header_Num => Header_Num,
 135       Element    => Source_Id,
 136       No_Element => No_Source,
 137       Key        => File_Name_Type,
 138       Hash       => Hash,
 139       Equal      => "=");
 140    --  Mapping from base file names to Source_Id (containing full info about
 141    --  the source).
 142
 143    type Tree_Processing_Data is record
 144       Tree           : Project_Tree_Ref;
 145       File_To_Source : Files_Htable.Instance;
 146       Flags          : Prj.Processing_Flags;
 147    end record;
 148    --  Temporary data which is needed while parsing a project. It does not need
 149    --  to be kept in memory once a project has been fully loaded, but is
 150    --  necessary while performing consistency checks (duplicate sources,...)
 151    --  This data must be initialized before processing any project, and the
 152    --  same data is used for processing all projects in the tree.
 153
 154    procedure Initialize
 155      (Data  : out Tree_Processing_Data;
 156       Tree  : Project_Tree_Ref;
 157       Flags : Prj.Processing_Flags);
 158    --  Initialize Data
 159
 160    procedure Free (Data : in out Tree_Processing_Data);
 161    --  Free the memory occupied by Data
 162
 163    procedure Check
 164      (Project     : Project_Id;
 165       Data        : in out Tree_Processing_Data);
 166    --  Process the naming scheme for a single project
 167
 168    procedure Initialize
 169      (Data    : in out Project_Processing_Data;
 170       Project : Project_Id);
 171    procedure Free (Data : in out Project_Processing_Data);
 172    --  Initialize or free memory for a project-specific data
 173
 174    procedure Find_Excluded_Sources
 175      (Project : in out Project_Processing_Data;
 176       Data    : in out Tree_Processing_Data);
 177    --  Find the list of files that should not be considered as source files
 178    --  for this project. Sets the list in the Project.Excluded_Sources_Htable.
 179
 180    procedure Override_Kind (Source : Source_Id; Kind : Source_Kind);
 181    --  Override the reference kind for a source file. This properly updates
 182    --  the unit data if necessary.
 183
 184    procedure Load_Naming_Exceptions
 185      (Project : in out Project_Processing_Data;
 186       Data    : in out Tree_Processing_Data);
 187    --  All source files in Data.First_Source are considered as naming
 188    --  exceptions, and copied into the Source_Names and Unit_Exceptions tables
 189    --  as appropriate.
 190
 191    procedure Add_Source
 192      (Id                  : out Source_Id;
 193       Data                : in out Tree_Processing_Data;
 194       Project             : Project_Id;
 195       Source_Dir_Rank     : Natural;
 196       Lang_Id             : Language_Ptr;
 197       Kind                : Source_Kind;
 198       File_Name           : File_Name_Type;
 199       Display_File        : File_Name_Type;
 200       Naming_Exception    : Boolean          := False;
 201       Path                : Path_Information := No_Path_Information;
 202       Alternate_Languages : Language_List    := null;
 203       Unit                : Name_Id          := No_Name;
 204       Index               : Int              := 0;
 205       Locally_Removed     : Boolean          := False;
 206       Location            : Source_Ptr       := No_Location);
 207    --  Add a new source to the different lists: list of all sources in the
 208    --  project tree, list of source of a project and list of sources of a
 209    --  language.
 210    --
 211    --  If Path is specified, the file is also added to Source_Paths_HT.
 212    --
 213    --  Location is used for error messages
 214
 215    function Canonical_Case_File_Name (Name : Name_Id) return File_Name_Type;
 216    --  Same as Osint.Canonical_Case_File_Name but applies to Name_Id.
 217    --  This alters Name_Buffer
 218
 219    function Suffix_Matches
 220      (Filename : String;
 221       Suffix   : File_Name_Type) return Boolean;
 222    --  True if the file name ends with the given suffix. Always returns False
 223    --  if Suffix is No_Name.
 224
 225    procedure Replace_Into_Name_Buffer
 226      (Str         : String;
 227       Pattern     : String;
 228       Replacement : Character);
 229    --  Copy Str into Name_Buffer, replacing Pattern with Replacement. Str is
 230    --  converted to lower-case at the same time.
 231
 232    procedure Check_Ada_Name (Name : String; Unit : out Name_Id);
 233    --  Check that a name is a valid Ada unit name
 234
 235    procedure Check_Package_Naming
 236      (Project : Project_Id;
 237       Data    : in out Tree_Processing_Data;
 238       Bodies  : out Array_Element_Id;
 239       Specs   : out Array_Element_Id);
 240    --  Check the naming scheme part of Data, and initialize the naming scheme
 241    --  data in the config of the various languages. This also returns the
 242    --  naming scheme exceptions for unit-based languages (Bodies and Specs are
 243    --  associative arrays mapping individual unit names to source file names).
 244
 245    procedure Check_Configuration
 246      (Project : Project_Id;
 247       Data    : in out Tree_Processing_Data);
 248    --  Check the configuration attributes for the project
 249
 250    procedure Check_If_Externally_Built
 251      (Project : Project_Id;
 252       Data    : in out Tree_Processing_Data);
 253    --  Check attribute Externally_Built of project Project in project tree
 254    --  Data.Tree and modify its data Data if it has the value "true".
 255
 256    procedure Check_Interfaces
 257      (Project : Project_Id;
 258       Data    : in out Tree_Processing_Data);
 259    --  If a list of sources is specified in attribute Interfaces, set
 260    --  In_Interfaces only for the sources specified in the list.
 261
 262    procedure Check_Library_Attributes
 263      (Project : Project_Id;
 264       Data    : in out Tree_Processing_Data);
 265    --  Check the library attributes of project Project in project tree
 266    --  and modify its data Data accordingly.
 267
 268    procedure Check_Programming_Languages
 269      (Project : Project_Id;
 270       Data    : in out Tree_Processing_Data);
 271    --  Check attribute Languages for the project with data Data in project
 272    --  tree Data.Tree and set the components of Data for all the programming
 273    --  languages indicated in attribute Languages, if any.
 274
 275    procedure Check_Stand_Alone_Library
 276      (Project : Project_Id;
 277       Data    : in out Tree_Processing_Data);
 278    --  Check if project Project in project tree Data.Tree is a Stand-Alone
 279    --  Library project, and modify its data Data accordingly if it is one.
 280
 281    function Compute_Directory_Last (Dir : String) return Natural;
 282    --  Return the index of the last significant character in Dir. This is used
 283    --  to avoid duplicate '/' (slash) characters at the end of directory names.
 284
 285    procedure Search_Directories
 286      (Project         : in out Project_Processing_Data;
 287       Data            : in out Tree_Processing_Data;
 288       For_All_Sources : Boolean);
 289    --  Search the source directories to find the sources. If For_All_Sources is
 290    --  True, check each regular file name against the naming schemes of the
 291    --  various languages. Otherwise consider only the file names in hash table
 292    --  Source_Names. If Allow_Duplicate_Basenames then files with identical
 293    --  base names are permitted within a project for source-based languages
 294    --  (never for unit based languages).
 295
 296    procedure Check_File
 297      (Project           : in out Project_Processing_Data;
 298       Data              : in out Tree_Processing_Data;
 299       Source_Dir_Rank   : Natural;
 300       Path              : Path_Name_Type;
 301       File_Name         : File_Name_Type;
 302       Display_File_Name : File_Name_Type;
 303       Locally_Removed   : Boolean;
 304       For_All_Sources   : Boolean);
 305    --  Check if file File_Name is a valid source of the project. This is used
 306    --  in multi-language mode only. When the file matches one of the naming
 307    --  schemes, it is added to various htables through Add_Source and to
 308    --  Source_Paths_Htable.
 309    --
 310    --  Name is the name of the candidate file. It hasn't been normalized yet
 311    --  and is the direct result of readdir().
 312    --
 313    --  File_Name is the same as Name, but has been normalized.
 314    --  Display_File_Name, however, has not been normalized.
 315    --
 316    --  Source_Directory is the directory in which the file was found. It is
 317    --  neither normalized nor has had links resolved, and must not end with a
 318    --  a directory separator, to avoid duplicates later on.
 319    --
 320    --  If For_All_Sources is True, then all possible file names are analyzed
 321    --  otherwise only those currently set in the Source_Names hash table.
 322
 323    procedure Check_File_Naming_Schemes
 324      (In_Tree               : Project_Tree_Ref;
 325       Project               : Project_Processing_Data;
 326       File_Name             : File_Name_Type;
 327       Alternate_Languages   : out Language_List;
 328       Language              : out Language_Ptr;
 329       Display_Language_Name : out Name_Id;
 330       Unit                  : out Name_Id;
 331       Lang_Kind             : out Language_Kind;
 332       Kind                  : out Source_Kind);
 333    --  Check if the file name File_Name conforms to one of the naming schemes
 334    --  of the project. If the file does not match one of the naming schemes,
 335    --  set Language to No_Language_Index. Filename is the name of the file
 336    --  being investigated. It has been normalized (case-folded). File_Name is
 337    --  the same value.
 338
 339    procedure Get_Directories
 340      (Project     : Project_Id;
 341       Data        : in out Tree_Processing_Data);
 342    --  Get the object directory, the exec directory and the source directories
 343    --  of a project.
 344
 345    procedure Get_Mains
 346      (Project : Project_Id;
 347       Data    : in out Tree_Processing_Data);
 348    --  Get the mains of a project from attribute Main, if it exists, and put
 349    --  them in the project data.
 350
 351    procedure Get_Sources_From_File
 352      (Path     : String;
 353       Location : Source_Ptr;
 354       Project  : in out Project_Processing_Data;
 355       Data     : in out Tree_Processing_Data);
 356    --  Get the list of sources from a text file and put them in hash table
 357    --  Source_Names.
 358
 359    procedure Find_Sources
 360      (Project : in out Project_Processing_Data;
 361       Data    : in out Tree_Processing_Data);
 362    --  Process the Source_Files and Source_List_File attributes, and store the
 363    --  list of source files into the Source_Names htable. When these attributes
 364    --  are not defined, find all files matching the naming schemes in the
 365    --  source directories. If Allow_Duplicate_Basenames, then files with the
 366    --  same base names are authorized within a project for source-based
 367    --  languages (never for unit based languages)
 368
 369    procedure Compute_Unit_Name
 370      (File_Name : File_Name_Type;
 371       Naming    : Lang_Naming_Data;
 372       Kind      : out Source_Kind;
 373       Unit      : out Name_Id;
 374       Project   : Project_Processing_Data;
 375       In_Tree   : Project_Tree_Ref);
 376    --  Check whether the file matches the naming scheme. If it does,
 377    --  compute its unit name. If Unit is set to No_Name on exit, none of the
 378    --  other out parameters are relevant.
 379
 380    procedure Check_Illegal_Suffix
 381      (Project         : Project_Id;
 382       Suffix          : File_Name_Type;
 383       Dot_Replacement : File_Name_Type;
 384       Attribute_Name  : String;
 385       Location        : Source_Ptr;
 386       Data            : in out Tree_Processing_Data);
 387    --  Display an error message if the given suffix is illegal for some reason.
 388    --  The name of the attribute we are testing is specified in Attribute_Name,
 389    --  which is used in the error message. Location is the location where the
 390    --  suffix is defined.
 391
 392    procedure Locate_Directory
 393      (Project          : Project_Id;
 394       Name             : File_Name_Type;
 395       Path             : out Path_Information;
 396       Dir_Exists       : out Boolean;
 397       Data             : in out Tree_Processing_Data;
 398       Create           : String := "";
 399       Location         : Source_Ptr := No_Location;
 400       Must_Exist       : Boolean := True;
 401       Externally_Built : Boolean := False);
 402    --  Locate a directory. Name is the directory name. Relative paths are
 403    --  resolved relative to the project's directory. If the directory does not
 404    --  exist and Setup_Projects is True and Create is a non null string, an
 405    --  attempt is made to create the directory. If the directory does not
 406    --  exist, it is either created if Setup_Projects is False (and then
 407    --  returned), or simply returned without checking for its existence (if
 408    --  Must_Exist is False) or No_Path_Information is returned. In all cases,
 409    --  Dir_Exists indicates whether the directory now exists. Create is also
 410    --  used for debugging traces to show which path we are computing.
 411
 412    procedure Look_For_Sources
 413      (Project : in out Project_Processing_Data;
 414       Data    : in out Tree_Processing_Data);
 415    --  Find all the sources of project Project in project tree Data.Tree and
 416    --  update its Data accordingly. This assumes that Data.First_Source has
 417    --  been initialized with the list of excluded sources and special naming
 418    --  exceptions.
 419
 420    function Path_Name_Of
 421      (File_Name : File_Name_Type;
 422       Directory : Path_Name_Type) return String;
 423    --  Returns the path name of a (non project) file. Returns an empty string
 424    --  if file cannot be found.
 425
 426    procedure Remove_Source
 427      (Id          : Source_Id;
 428       Replaced_By : Source_Id);
 429    --  Remove a file from the list of sources of a project. This might be
 430    --  because the file is replaced by another one in an extending project,
 431    --  or because a file was added as a naming exception but was not found
 432    --  in the end.
 433
 434    procedure Report_No_Sources
 435      (Project      : Project_Id;
 436       Lang_Name    : String;
 437       Data         : Tree_Processing_Data;
 438       Location     : Source_Ptr;
 439       Continuation : Boolean := False);
 440    --  Report an error or a warning depending on the value of When_No_Sources
 441    --  when there are no sources for language Lang_Name.
 442
 443    procedure Show_Source_Dirs
 444      (Project : Project_Id; In_Tree : Project_Tree_Ref);
 445    --  List all the source directories of a project
 446
 447    procedure Write_Attr (Name, Value : String);
 448    --  Debug print a value for a specific property. Does nothing when not in
 449    --  debug mode
 450
 451    ------------------------------
 452    -- Replace_Into_Name_Buffer --
 453    ------------------------------
 454
 455    procedure Replace_Into_Name_Buffer
 456      (Str         : String;
 457       Pattern     : String;
 458       Replacement : Character)
 459    is
 460       Max : constant Integer := Str'Last - Pattern'Length + 1;
 461       J   : Positive;
 462
 463    begin
 464       Name_Len := 0;
 465
 466       J := Str'First;
 467       while J <= Str'Last loop
 468          Name_Len := Name_Len + 1;
 469
 470          if J <= Max
 471            and then Str (J .. J + Pattern'Length - 1) = Pattern
 472          then
 473             Name_Buffer (Name_Len) := Replacement;
 474             J := J + Pattern'Length;
 475
 476          else
 477             Name_Buffer (Name_Len) := GNAT.Case_Util.To_Lower (Str (J));
 478             J := J + 1;
 479          end if;
 480       end loop;
 481    end Replace_Into_Name_Buffer;
 482
 483    --------------------
 484    -- Suffix_Matches --
 485    --------------------
 486
 487    function Suffix_Matches
 488      (Filename : String;
 489       Suffix   : File_Name_Type) return Boolean
 490    is
 491       Min_Prefix_Length : Natural := 0;
 492
 493    begin
 494       if Suffix = No_File or else Suffix = Empty_File then
 495          return False;
 496       end if;
 497
 498       declare
 499          Suf : String := Get_Name_String (Suffix);
 500
 501       begin
 502          --  On non case-sensitive systems, use proper suffix casing
 503
 504          Canonical_Case_File_Name (Suf);
 505
 506          --  The file name must end with the suffix (which is not an extension)
 507          --  For instance a suffix "configure.in" must match a file with the
 508          --  same name. To avoid dummy cases, though, a suffix starting with
 509          --  '.' requires a file that is at least one character longer ('.cpp'
 510          --  should not match a file with the same name)
 511
 512          if Suf (Suf'First) = '.' then
 513             Min_Prefix_Length := 1;
 514          end if;
 515
 516          return Filename'Length >= Suf'Length + Min_Prefix_Length
 517            and then Filename
 518              (Filename'Last - Suf'Length + 1 .. Filename'Last) = Suf;
 519       end;
 520    end Suffix_Matches;
 521
 522    ----------------
 523    -- Write_Attr --
 524    ----------------
 525
 526    procedure Write_Attr (Name, Value : String) is
 527    begin
 528       if Current_Verbosity = High then
 529          Write_Str  ("  " & Name & " = """);
 530          Write_Str  (Value);
 531          Write_Char ('"');
 532          Write_Eol;
 533       end if;
 534    end Write_Attr;
 535
 536    ----------------
 537    -- Add_Source --
 538    ----------------
 539
 540    procedure Add_Source
 541      (Id                  : out Source_Id;
 542       Data                : in out Tree_Processing_Data;
 543       Project             : Project_Id;
 544       Source_Dir_Rank     : Natural;
 545       Lang_Id             : Language_Ptr;
 546       Kind                : Source_Kind;
 547       File_Name           : File_Name_Type;
 548       Display_File        : File_Name_Type;
 549       Naming_Exception    : Boolean          := False;
 550       Path                : Path_Information := No_Path_Information;
 551       Alternate_Languages : Language_List    := null;
 552       Unit                : Name_Id          := No_Name;
 553       Index               : Int              := 0;
 554       Locally_Removed     : Boolean          := False;
 555       Location            : Source_Ptr       := No_Location)
 556    is
 557       Config    : constant Language_Config := Lang_Id.Config;
 558       UData     : Unit_Index;
 559       Add_Src   : Boolean;
 560       Source    : Source_Id;
 561       Prev_Unit : Unit_Index := No_Unit_Index;
 562
 563       Source_To_Replace : Source_Id := No_Source;
 564
 565    begin
 566       --  Check if the same file name or unit is used in the prj tree
 567
 568       Add_Src := True;
 569
 570       if Unit /= No_Name then
 571          Prev_Unit := Units_Htable.Get (Data.Tree.Units_HT, Unit);
 572       end if;
 573
 574       if Prev_Unit /= No_Unit_Index
 575         and then (Kind = Impl or else Kind = Spec)
 576         and then Prev_Unit.File_Names (Kind) /= null
 577       then
 578          --  Suspicious, we need to check later whether this is authorized
 579
 580          Add_Src := False;
 581          Source := Prev_Unit.File_Names (Kind);
 582
 583       else
 584          Source  := Files_Htable.Get (Data.File_To_Source, File_Name);
 585
 586          if Source /= No_Source
 587            and then Source.Index = Index
 588          then
 589             Add_Src := False;
 590          end if;
 591       end if;
 592
 593       --  Duplication of file/unit in same project is allowed if order of
 594       --  source directories is known.
 595
 596       if Add_Src = False then
 597          Add_Src := True;
 598
 599          if Project = Source.Project then
 600             if Prev_Unit = No_Unit_Index then
 601                if Data.Flags.Allow_Duplicate_Basenames then
 602                   Add_Src := True;
 603
 604                elsif Source_Dir_Rank /= Source.Source_Dir_Rank then
 605                   Add_Src := False;
 606
 607                else
 608                   Error_Msg_File_1 := File_Name;
 609                   Error_Msg
 610                     (Data.Flags, "duplicate source file name {",
 611                      Location, Project);
 612                   Add_Src := False;
 613                end if;
 614
 615             else
 616                if Source_Dir_Rank /= Source.Source_Dir_Rank then
 617                   Add_Src := False;
 618
 619                --  We might be seeing the same file through a different path
 620                --  (for instance because of symbolic links).
 621
 622                elsif Source.Path.Name /= Path.Name then
 623                   Error_Msg_Name_1 := Unit;
 624                   Error_Msg
 625                     (Data.Flags, "duplicate unit %%", Location, Project);
 626                   Add_Src := False;
 627                end if;
 628             end if;
 629
 630             --  Do not allow the same unit name in different projects, except
 631             --  if one is extending the other.
 632
 633             --  For a file based language, the same file name replaces a file
 634             --  in a project being extended, but it is allowed to have the same
 635             --  file name in unrelated projects.
 636
 637          elsif Is_Extending (Project, Source.Project) then
 638             if not Locally_Removed then
 639                Source_To_Replace := Source;
 640             end if;
 641
 642          elsif Prev_Unit /= No_Unit_Index
 643            and then not Source.Locally_Removed
 644          then
 645             --  Path is set if this is a source we found on the disk, in which
 646             --  case we can provide more explicit error message. Path is unset
 647             --  when the source is added from one of the naming exceptions in
 648             --  the project.
 649
 650             if Path /= No_Path_Information then
 651                Error_Msg_Name_1 := Unit;
 652                Error_Msg
 653                  (Data.Flags,
 654                   "unit %% cannot belong to several projects",
 655                   Location, Project);
 656
 657                Error_Msg_Name_1 := Project.Name;
 658                Error_Msg_Name_2 := Name_Id (Path.Display_Name);
 659                Error_Msg
 660                  (Data.Flags, "\  project %%, %%", Location, Project);
 661
 662                Error_Msg_Name_1 := Source.Project.Name;
 663                Error_Msg_Name_2 := Name_Id (Source.Path.Display_Name);
 664                Error_Msg
 665                  (Data.Flags, "\  project %%, %%", Location, Project);
 666
 667             else
 668                Error_Msg_Name_1 := Unit;
 669                Error_Msg_Name_2 := Source.Project.Name;
 670                Error_Msg
 671                  (Data.Flags, "unit %% already belongs to project %%",
 672                   Location, Project);
 673             end if;
 674
 675             Add_Src := False;
 676
 677          elsif not Source.Locally_Removed
 678            and then not Data.Flags.Allow_Duplicate_Basenames
 679            and then Lang_Id.Config.Kind = Unit_Based
 680          then
 681             Error_Msg_File_1 := File_Name;
 682             Error_Msg_File_2 := File_Name_Type (Source.Project.Name);
 683             Error_Msg
 684               (Data.Flags,
 685                "{ is already a source of project {", Location, Project);
 686
 687             --  Add the file anyway, to avoid further warnings like "language
 688             --  unknown".
 689
 690             Add_Src := True;
 691          end if;
 692       end if;
 693
 694       if not Add_Src then
 695          return;
 696       end if;
 697
 698       --  Add the new file
 699
 700       Id := new Source_Data;
 701
 702       if Current_Verbosity = High then
 703          Write_Str ("Adding source File: ");
 704          Write_Str (Get_Name_String (File_Name));
 705
 706          if Index /= 0 then
 707             Write_Str (" at" & Index'Img);
 708          end if;
 709
 710          if Lang_Id.Config.Kind = Unit_Based then
 711             Write_Str (" Unit: ");
 712
 713             --  ??? in gprclean, it seems we sometimes pass an empty Unit name
 714             --  (see test extended_projects).
 715
 716             if Unit /= No_Name then
 717                Write_Str (Get_Name_String (Unit));
 718             end if;
 719
 720             Write_Str (" Kind: ");
 721             Write_Str (Source_Kind'Image (Kind));
 722          end if;
 723
 724          Write_Eol;
 725       end if;
 726
 727       Id.Project             := Project;
 728       Id.Source_Dir_Rank     := Source_Dir_Rank;
 729       Id.Language            := Lang_Id;
 730       Id.Kind                := Kind;
 731       Id.Alternate_Languages := Alternate_Languages;
 732       Id.Locally_Removed     := Locally_Removed;
 733       Id.Index               := Index;
 734       Id.File                := File_Name;
 735       Id.Display_File        := Display_File;
 736       Id.Dep_Name            := Dependency_Name
 737                                   (File_Name, Lang_Id.Config.Dependency_Kind);
 738       Id.Naming_Exception    := Naming_Exception;
 739
 740       --  Add the source id to the Unit_Sources_HT hash table, if the unit name
 741       --  is not null.
 742
 743       if Unit /= No_Name then
 744
 745          --  Note: we might be creating a dummy unit here, when we in fact have
 746          --  a separate. For instance, file file-bar.adb will initially be
 747          --  assumed to be the IMPL of unit "file.bar". Only later on (in
 748          --  Check_Object_Files) will we parse those units that only have an
 749          --  impl and no spec to make sure whether we have a Separate in fact
 750          --  (that significantly reduces the number of times we need to parse
 751          --  the files, since we are then only interested in those with no
 752          --  spec). We still need those dummy units in the table, since that's
 753          --  the name we find in the ALI file
 754
 755          UData := Units_Htable.Get (Data.Tree.Units_HT, Unit);
 756
 757          if UData = No_Unit_Index then
 758             UData := new Unit_Data;
 759             UData.Name := Unit;
 760             Units_Htable.Set (Data.Tree.Units_HT, Unit, UData);
 761          end if;
 762
 763          Id.Unit := UData;
 764
 765          --  Note that this updates Unit information as well
 766
 767          Override_Kind (Id, Kind);
 768       end if;
 769
 770       if Is_Compilable (Id) and then Config.Object_Generated then
 771          Id.Object   := Object_Name (File_Name, Config.Object_File_Suffix);
 772          Id.Switches := Switches_Name (File_Name);
 773       end if;
 774
 775       if Path /= No_Path_Information then
 776          Id.Path := Path;
 777          Source_Paths_Htable.Set (Data.Tree.Source_Paths_HT, Path.Name, Id);
 778       end if;
 779
 780       if Index /= 0 then
 781          Project.Has_Multi_Unit_Sources := True;
 782       end if;
 783
 784       --  Add the source to the language list
 785
 786       Id.Next_In_Lang := Lang_Id.First_Source;
 787       Lang_Id.First_Source := Id;
 788
 789       if Source_To_Replace /= No_Source then
 790          Remove_Source (Source_To_Replace, Id);
 791       end if;
 792
 793       Files_Htable.Set (Data.File_To_Source, File_Name, Id);
 794    end Add_Source;
 795
 796    ------------------------------
 797    -- Canonical_Case_File_Name --
 798    ------------------------------
 799
 800    function Canonical_Case_File_Name (Name : Name_Id) return File_Name_Type is
 801    begin
 802       if Osint.File_Names_Case_Sensitive then
 803          return File_Name_Type (Name);
 804       else
 805          Get_Name_String (Name);
 806          Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
 807          return Name_Find;
 808       end if;
 809    end Canonical_Case_File_Name;
 810
 811    -----------
 812    -- Check --
 813    -----------
 814
 815    procedure Check
 816      (Project     : Project_Id;
 817       Data        : in out Tree_Processing_Data)
 818    is
 819       Specs     : Array_Element_Id;
 820       Bodies    : Array_Element_Id;
 821       Extending : Boolean := False;
 822       Prj_Data  : Project_Processing_Data;
 823
 824    begin
 825       Initialize (Prj_Data, Project);
 826
 827       Check_If_Externally_Built (Project, Data);
 828
 829       --  Object, exec and source directories
 830
 831       Get_Directories (Project, Data);
 832
 833       --  Get the programming languages
 834
 835       Check_Programming_Languages (Project, Data);
 836
 837       if Project.Qualifier = Dry
 838         and then Project.Source_Dirs /= Nil_String
 839       then
 840          declare
 841             Source_Dirs      : constant Variable_Value :=
 842                                  Util.Value_Of
 843                                    (Name_Source_Dirs,
 844                                     Project.Decl.Attributes, Data.Tree);
 845             Source_Files     : constant Variable_Value :=
 846                                  Util.Value_Of
 847                                    (Name_Source_Files,
 848                                     Project.Decl.Attributes, Data.Tree);
 849             Source_List_File : constant Variable_Value :=
 850                                  Util.Value_Of
 851                                    (Name_Source_List_File,
 852                                     Project.Decl.Attributes, Data.Tree);
 853             Languages        : constant Variable_Value :=
 854                                  Util.Value_Of
 855                                    (Name_Languages,
 856                                     Project.Decl.Attributes, Data.Tree);
 857
 858          begin
 859             if Source_Dirs.Values  = Nil_String
 860               and then Source_Files.Values = Nil_String
 861               and then Languages.Values = Nil_String
 862               and then Source_List_File.Default
 863             then
 864                Project.Source_Dirs := Nil_String;
 865
 866             else
 867                Error_Msg
 868                  (Data.Flags,
 869                   "at least one of Source_Files, Source_Dirs or Languages "
 870                     & "must be declared empty for an abstract project",
 871                   Project.Location, Project);
 872             end if;
 873          end;
 874       end if;
 875
 876       --  Check configuration. This must be done even for gnatmake (even though
 877       --  no user configuration file was provided) since the default config we
 878       --  generate indicates whether libraries are supported for instance.
 879
 880       Check_Configuration (Project, Data);
 881
 882       --  Library attributes
 883
 884       Check_Library_Attributes (Project, Data);
 885
 886       if Current_Verbosity = High then
 887          Show_Source_Dirs (Project, Data.Tree);
 888       end if;
 889
 890       Extending := Project.Extends /= No_Project;
 891
 892       Check_Package_Naming (Project, Data, Bodies => Bodies, Specs => Specs);
 893
 894       --  Find the sources
 895
 896       if Project.Source_Dirs /= Nil_String then
 897          Look_For_Sources (Prj_Data, Data);
 898
 899          if not Project.Externally_Built
 900            and then not Extending
 901          then
 902             declare
 903                Language     : Language_Ptr;
 904                Source       : Source_Id;
 905                Alt_Lang     : Language_List;
 906                Continuation : Boolean := False;
 907                Iter         : Source_Iterator;
 908
 909             begin
 910                Language := Project.Languages;
 911                while Language /= No_Language_Index loop
 912
 913                   --  If there are no sources for this language, check if there
 914                   --  are sources for which this is an alternate language.
 915
 916                   if Language.First_Source = No_Source
 917                     and then (Data.Flags.Require_Sources_Other_Lang
 918                                or else Language.Name = Name_Ada)
 919                   then
 920                      Iter := For_Each_Source (In_Tree => Data.Tree,
 921                                               Project => Project);
 922                      Source_Loop : loop
 923                         Source := Element (Iter);
 924                         exit Source_Loop when Source = No_Source
 925                           or else Source.Language = Language;
 926
 927                         Alt_Lang := Source.Alternate_Languages;
 928                         while Alt_Lang /= null loop
 929                            exit Source_Loop when Alt_Lang.Language = Language;
 930                            Alt_Lang := Alt_Lang.Next;
 931                         end loop;
 932
 933                         Next (Iter);
 934                      end loop Source_Loop;
 935
 936                      if Source = No_Source then
 937
 938                         Report_No_Sources
 939                           (Project,
 940                            Get_Name_String (Language.Display_Name),
 941                            Data,
 942                            Prj_Data.Source_List_File_Location,
 943                            Continuation);
 944                         Continuation := True;
 945                      end if;
 946                   end if;
 947
 948                   Language := Language.Next;
 949                end loop;
 950             end;
 951          end if;
 952       end if;
 953
 954       --  If a list of sources is specified in attribute Interfaces, set
 955       --  In_Interfaces only for the sources specified in the list.
 956
 957       Check_Interfaces (Project, Data);
 958
 959       --  If it is a library project file, check if it is a standalone library
 960
 961       if Project.Library then
 962          Check_Stand_Alone_Library (Project, Data);
 963       end if;
 964
 965       --  Put the list of Mains, if any, in the project data
 966
 967       Get_Mains (Project, Data);
 968
 969       Free (Prj_Data);
 970    end Check;
 971
 972    --------------------
 973    -- Check_Ada_Name --
 974    --------------------
 975
 976    procedure Check_Ada_Name (Name : String; Unit : out Name_Id) is
 977       The_Name        : String := Name;
 978       Real_Name       : Name_Id;
 979       Need_Letter     : Boolean := True;
 980       Last_Underscore : Boolean := False;
 981       OK              : Boolean := The_Name'Length > 0;
 982       First           : Positive;
 983
 984       function Is_Reserved (Name : Name_Id) return Boolean;
 985       function Is_Reserved (S    : String)  return Boolean;
 986       --  Check that the given name is not an Ada 95 reserved word. The reason
 987       --  for the Ada 95 here is that we do not want to exclude the case of an
 988       --  Ada 95 unit called Interface (for example). In Ada 2005, such a unit
 989       --  name would be rejected anyway by the compiler. That means there is no
 990       --  requirement that the project file parser reject this.
 991
 992       -----------------
 993       -- Is_Reserved --
 994       -----------------
 995
 996       function Is_Reserved (S : String) return Boolean is
 997       begin
 998          Name_Len := 0;
 999          Add_Str_To_Name_Buffer (S);
1000          return Is_Reserved (Name_Find);
1001       end Is_Reserved;
1002
1003       -----------------
1004       -- Is_Reserved --
1005       -----------------
1006
1007       function Is_Reserved (Name : Name_Id) return Boolean is
1008       begin
1009          if Get_Name_Table_Byte (Name) /= 0
1010            and then Name /= Name_Project
1011            and then Name /= Name_Extends
1012            and then Name /= Name_External
1013            and then Name not in Ada_2005_Reserved_Words
1014          then
1015             Unit := No_Name;
1016
1017             if Current_Verbosity = High then
1018                Write_Str (The_Name);
1019                Write_Line (" is an Ada reserved word.");
1020             end if;
1021
1022             return True;
1023
1024          else
1025             return False;
1026          end if;
1027       end Is_Reserved;
1028
1029    --  Start of processing for Check_Ada_Name
1030
1031    begin
1032       To_Lower (The_Name);
1033
1034       Name_Len := The_Name'Length;
1035       Name_Buffer (1 .. Name_Len) := The_Name;
1036
1037       --  Special cases of children of packages A, G, I and S on VMS
1038
1039       if OpenVMS_On_Target
1040         and then Name_Len > 3
1041         and then Name_Buffer (2 .. 3) = "__"
1042         and then
1043           ((Name_Buffer (1) = 'a') or else
1044            (Name_Buffer (1) = 'g') or else
1045            (Name_Buffer (1) = 'i') or else
1046            (Name_Buffer (1) = 's'))
1047       then
1048          Name_Buffer (2) := '.';
1049          Name_Buffer (3 .. Name_Len - 1) := Name_Buffer (4 .. Name_Len);
1050          Name_Len := Name_Len - 1;
1051       end if;
1052
1053       Real_Name := Name_Find;
1054
1055       if Is_Reserved (Real_Name) then
1056          return;
1057       end if;
1058
1059       First := The_Name'First;
1060
1061       for Index in The_Name'Range loop
1062          if Need_Letter then
1063
1064             --  We need a letter (at the beginning, and following a dot),
1065             --  but we don't have one.
1066
1067             if Is_Letter (The_Name (Index)) then
1068                Need_Letter := False;
1069
1070             else
1071                OK := False;
1072
1073                if Current_Verbosity = High then
1074                   Write_Int  (Types.Int (Index));
1075                   Write_Str  (": '");
1076                   Write_Char (The_Name (Index));
1077                   Write_Line ("' is not a letter.");
1078                end if;
1079
1080                exit;
1081             end if;
1082
1083          elsif Last_Underscore
1084            and then (The_Name (Index) = '_' or else The_Name (Index) = '.')
1085          then
1086             --  Two underscores are illegal, and a dot cannot follow
1087             --  an underscore.
1088
1089             OK := False;
1090
1091             if Current_Verbosity = High then
1092                Write_Int  (Types.Int (Index));
1093                Write_Str  (": '");
1094                Write_Char (The_Name (Index));
1095                Write_Line ("' is illegal here.");
1096             end if;
1097
1098             exit;
1099
1100          elsif The_Name (Index) = '.' then
1101
1102             --  First, check if the name before the dot is not a reserved word
1103
1104             if Is_Reserved (The_Name (First .. Index - 1)) then
1105                return;
1106             end if;
1107
1108             First := Index + 1;
1109
1110             --  We need a letter after a dot
1111
1112             Need_Letter := True;
1113
1114          elsif The_Name (Index) = '_' then
1115             Last_Underscore := True;
1116
1117          else
1118             --  We need an letter or a digit
1119
1120             Last_Underscore := False;
1121
1122             if not Is_Alphanumeric (The_Name (Index)) then
1123                OK := False;
1124
1125                if Current_Verbosity = High then
1126                   Write_Int  (Types.Int (Index));
1127                   Write_Str  (": '");
1128                   Write_Char (The_Name (Index));
1129                   Write_Line ("' is not alphanumeric.");
1130                end if;
1131
1132                exit;
1133             end if;
1134          end if;
1135       end loop;
1136
1137       --  Cannot end with an underscore or a dot
1138
1139       OK := OK and then not Need_Letter and then not Last_Underscore;
1140
1141       if OK then
1142          if First /= Name'First and then
1143            Is_Reserved (The_Name (First .. The_Name'Last))
1144          then
1145             return;
1146          end if;
1147
1148          Unit := Real_Name;
1149
1150       else
1151          --  Signal a problem with No_Name
1152
1153          Unit := No_Name;
1154       end if;
1155    end Check_Ada_Name;
1156
1157    -------------------------
1158    -- Check_Configuration --
1159    -------------------------
1160
1161    procedure Check_Configuration
1162      (Project : Project_Id;
1163       Data    : in out Tree_Processing_Data)
1164    is
1165       Dot_Replacement : File_Name_Type := No_File;
1166       Casing          : Casing_Type    := All_Lower_Case;
1167       Separate_Suffix : File_Name_Type := No_File;
1168
1169       Lang_Index : Language_Ptr := No_Language_Index;
1170       --  The index of the language data being checked
1171
1172       Prev_Index : Language_Ptr := No_Language_Index;
1173       --  The index of the previous language
1174
1175       procedure Process_Project_Level_Simple_Attributes;
1176       --  Process the simple attributes at the project level
1177
1178       procedure Process_Project_Level_Array_Attributes;
1179       --  Process the associate array attributes at the project level
1180
1181       procedure Process_Packages;
1182       --  Read the packages of the project
1183
1184       ----------------------
1185       -- Process_Packages --
1186       ----------------------
1187
1188       procedure Process_Packages is
1189          Packages : Package_Id;
1190          Element  : Package_Element;
1191
1192          procedure Process_Binder (Arrays : Array_Id);
1193          --  Process the associate array attributes of package Binder
1194
1195          procedure Process_Builder (Attributes : Variable_Id);
1196          --  Process the simple attributes of package Builder
1197
1198          procedure Process_Compiler (Arrays : Array_Id);
1199          --  Process the associate array attributes of package Compiler
1200
1201          procedure Process_Naming (Attributes : Variable_Id);
1202          --  Process the simple attributes of package Naming
1203
1204          procedure Process_Naming (Arrays : Array_Id);
1205          --  Process the associate array attributes of package Naming
1206
1207          procedure Process_Linker (Attributes : Variable_Id);
1208          --  Process the simple attributes of package Linker of a
1209          --  configuration project.
1210
1211          --------------------
1212          -- Process_Binder --
1213          --------------------
1214
1215          procedure Process_Binder (Arrays : Array_Id) is
1216             Current_Array_Id : Array_Id;
1217             Current_Array    : Array_Data;
1218             Element_Id       : Array_Element_Id;
1219             Element          : Array_Element;
1220
1221          begin
1222             --  Process the associative array attribute of package Binder
1223
1224             Current_Array_Id := Arrays;
1225             while Current_Array_Id /= No_Array loop
1226                Current_Array := Data.Tree.Arrays.Table (Current_Array_Id);
1227
1228                Element_Id := Current_Array.Value;
1229                while Element_Id /= No_Array_Element loop
1230                   Element := Data.Tree.Array_Elements.Table (Element_Id);
1231
1232                   if Element.Index /= All_Other_Names then
1233
1234                      --  Get the name of the language
1235
1236                      Lang_Index :=
1237                        Get_Language_From_Name
1238                          (Project, Get_Name_String (Element.Index));
1239
1240                      if Lang_Index /= No_Language_Index then
1241                         case Current_Array.Name is
1242                            when Name_Driver =>
1243
1244                               --  Attribute Driver (<language>)
1245
1246                               Lang_Index.Config.Binder_Driver :=
1247                                 File_Name_Type (Element.Value.Value);
1248
1249                            when Name_Required_Switches =>
1250                               Put
1251                                 (Into_List =>
1252                                    Lang_Index.Config.Binder_Required_Switches,
1253                                  From_List => Element.Value.Values,
1254                                  In_Tree   => Data.Tree);
1255
1256                            when Name_Prefix =>
1257
1258                               --  Attribute Prefix (<language>)
1259
1260                               Lang_Index.Config.Binder_Prefix :=
1261                                 Element.Value.Value;
1262
1263                            when Name_Objects_Path =>
1264
1265                               --  Attribute Objects_Path (<language>)
1266
1267                               Lang_Index.Config.Objects_Path :=
1268                                 Element.Value.Value;
1269
1270                            when Name_Objects_Path_File =>
1271
1272                               --  Attribute Objects_Path (<language>)
1273
1274                               Lang_Index.Config.Objects_Path_File :=
1275                                 Element.Value.Value;
1276
1277                            when others =>
1278                               null;
1279                         end case;
1280                      end if;
1281                   end if;
1282
1283                   Element_Id := Element.Next;
1284                end loop;
1285
1286                Current_Array_Id := Current_Array.Next;
1287             end loop;
1288          end Process_Binder;
1289
1290          ---------------------
1291          -- Process_Builder --
1292          ---------------------
1293
1294          procedure Process_Builder (Attributes : Variable_Id) is
1295             Attribute_Id : Variable_Id;
1296             Attribute    : Variable;
1297
1298          begin
1299             --  Process non associated array attribute from package Builder
1300
1301             Attribute_Id := Attributes;
1302             while Attribute_Id /= No_Variable loop
1303                Attribute :=
1304                  Data.Tree.Variable_Elements.Table (Attribute_Id);
1305
1306                if not Attribute.Value.Default then
1307                   if Attribute.Name = Name_Executable_Suffix then
1308
1309                      --  Attribute Executable_Suffix: the suffix of the
1310                      --  executables.
1311
1312                      Project.Config.Executable_Suffix :=
1313                        Attribute.Value.Value;
1314                   end if;
1315                end if;
1316
1317                Attribute_Id := Attribute.Next;
1318             end loop;
1319          end Process_Builder;
1320
1321          ----------------------
1322          -- Process_Compiler --
1323          ----------------------
1324
1325          procedure Process_Compiler (Arrays : Array_Id) is
1326             Current_Array_Id : Array_Id;
1327             Current_Array    : Array_Data;
1328             Element_Id       : Array_Element_Id;
1329             Element          : Array_Element;
1330             List             : String_List_Id;
1331
1332          begin
1333             --  Process the associative array attribute of package Compiler
1334
1335             Current_Array_Id := Arrays;
1336             while Current_Array_Id /= No_Array loop
1337                Current_Array := Data.Tree.Arrays.Table (Current_Array_Id);
1338
1339                Element_Id := Current_Array.Value;
1340                while Element_Id /= No_Array_Element loop
1341                   Element := Data.Tree.Array_Elements.Table (Element_Id);
1342
1343                   if Element.Index /= All_Other_Names then
1344
1345                      --  Get the name of the language
1346
1347                      Lang_Index := Get_Language_From_Name
1348                        (Project, Get_Name_String (Element.Index));
1349
1350                      if Lang_Index /= No_Language_Index then
1351                         case Current_Array.Name is
1352                         when Name_Dependency_Switches =>
1353
1354                            --  Attribute Dependency_Switches (<language>)
1355
1356                            if Lang_Index.Config.Dependency_Kind = None then
1357                               Lang_Index.Config.Dependency_Kind := Makefile;
1358                            end if;
1359
1360                            List := Element.Value.Values;
1361
1362                            if List /= Nil_String then
1363                               Put (Into_List =>
1364                                      Lang_Index.Config.Dependency_Option,
1365                                    From_List => List,
1366                                    In_Tree   => Data.Tree);
1367                            end if;
1368
1369                         when Name_Dependency_Driver =>
1370
1371                            --  Attribute Dependency_Driver (<language>)
1372
1373                            if Lang_Index.Config.Dependency_Kind = None then
1374                               Lang_Index.Config.Dependency_Kind := Makefile;
1375                            end if;
1376
1377                            List := Element.Value.Values;
1378
1379                            if List /= Nil_String then
1380                               Put (Into_List =>
1381                                      Lang_Index.Config.Compute_Dependency,
1382                                    From_List => List,
1383                                    In_Tree   => Data.Tree);
1384                            end if;
1385
1386                         when Name_Include_Switches =>
1387
1388                            --  Attribute Include_Switches (<language>)
1389
1390                            List := Element.Value.Values;
1391
1392                            if List = Nil_String then
1393                               Error_Msg
1394                                 (Data.Flags, "include option cannot be null",
1395                                  Element.Value.Location, Project);
1396                            end if;
1397
1398                            Put (Into_List => Lang_Index.Config.Include_Option,
1399                                 From_List => List,
1400                                 In_Tree   => Data.Tree);
1401
1402                         when Name_Include_Path =>
1403
1404                            --  Attribute Include_Path (<language>)
1405
1406                            Lang_Index.Config.Include_Path :=
1407                              Element.Value.Value;
1408
1409                         when Name_Include_Path_File =>
1410
1411                            --  Attribute Include_Path_File (<language>)
1412
1413                            Lang_Index.Config.Include_Path_File :=
1414                                Element.Value.Value;
1415
1416                         when Name_Driver =>
1417
1418                            --  Attribute Driver (<language>)
1419
1420                            Lang_Index.Config.Compiler_Driver :=
1421                              File_Name_Type (Element.Value.Value);
1422
1423                         when Name_Required_Switches |
1424                              Name_Leading_Required_Switches =>
1425                            Put (Into_List =>
1426                                   Lang_Index.Config.
1427                                     Compiler_Leading_Required_Switches,
1428                                 From_List => Element.Value.Values,
1429                                 In_Tree   => Data.Tree);
1430
1431                         when Name_Trailing_Required_Switches =>
1432                            Put (Into_List =>
1433                                   Lang_Index.Config.
1434                                     Compiler_Trailing_Required_Switches,
1435                                 From_List => Element.Value.Values,
1436                                 In_Tree   => Data.Tree);
1437
1438                         when Name_Multi_Unit_Switches =>
1439                            Put (Into_List =>
1440                                   Lang_Index.Config.Multi_Unit_Switches,
1441                                 From_List => Element.Value.Values,
1442                                 In_Tree   => Data.Tree);
1443
1444                         when Name_Multi_Unit_Object_Separator =>
1445                            Get_Name_String (Element.Value.Value);
1446
1447                            if Name_Len /= 1 then
1448                               Error_Msg
1449                                 (Data.Flags,
1450                                  "multi-unit object separator must have " &
1451                                  "a single character",
1452                                  Element.Value.Location, Project);
1453
1454                            elsif Name_Buffer (1) = ' ' then
1455                               Error_Msg
1456                                 (Data.Flags,
1457                                  "multi-unit object separator cannot be " &
1458                                  "a space",
1459                                  Element.Value.Location, Project);
1460
1461                            else
1462                               Lang_Index.Config.Multi_Unit_Object_Separator :=
1463                                 Name_Buffer (1);
1464                            end if;
1465
1466                         when Name_Path_Syntax =>
1467                            begin
1468                               Lang_Index.Config.Path_Syntax :=
1469                                   Path_Syntax_Kind'Value
1470                                     (Get_Name_String (Element.Value.Value));
1471
1472                            exception
1473                               when Constraint_Error =>
1474                                  Error_Msg
1475                                    (Data.Flags,
1476                                     "invalid value for Path_Syntax",
1477                                     Element.Value.Location, Project);
1478                            end;
1479
1480                         when Name_Object_File_Suffix =>
1481                            if Get_Name_String (Element.Value.Value) = "" then
1482                               Error_Msg
1483                                 (Data.Flags,
1484                                  "object file suffix cannot be empty",
1485                                  Element.Value.Location, Project);
1486
1487                            else
1488                               Lang_Index.Config.Object_File_Suffix :=
1489                                 Element.Value.Value;
1490                            end if;
1491
1492                         when Name_Object_File_Switches =>
1493                            Put (Into_List =>
1494                                   Lang_Index.Config.Object_File_Switches,
1495                                 From_List => Element.Value.Values,
1496                                 In_Tree   => Data.Tree);
1497
1498                         when Name_Pic_Option =>
1499
1500                            --  Attribute Compiler_Pic_Option (<language>)
1501
1502                            List := Element.Value.Values;
1503
1504                            if List = Nil_String then
1505                               Error_Msg
1506                                 (Data.Flags,
1507                                  "compiler PIC option cannot be null",
1508                                  Element.Value.Location, Project);
1509                            end if;
1510
1511                            Put (Into_List =>
1512                                   Lang_Index.Config.Compilation_PIC_Option,
1513                                 From_List => List,
1514                                 In_Tree   => Data.Tree);
1515
1516                         when Name_Mapping_File_Switches =>
1517
1518                            --  Attribute Mapping_File_Switches (<language>)
1519
1520                            List := Element.Value.Values;
1521
1522                            if List = Nil_String then
1523                               Error_Msg
1524                                 (Data.Flags,
1525                                  "mapping file switches cannot be null",
1526                                  Element.Value.Location, Project);
1527                            end if;
1528
1529                            Put (Into_List =>
1530                                 Lang_Index.Config.Mapping_File_Switches,
1531                                 From_List => List,
1532                                 In_Tree   => Data.Tree);
1533
1534                         when Name_Mapping_Spec_Suffix =>
1535
1536                            --  Attribute Mapping_Spec_Suffix (<language>)
1537
1538                            Lang_Index.Config.Mapping_Spec_Suffix :=
1539                              File_Name_Type (Element.Value.Value);
1540
1541                         when Name_Mapping_Body_Suffix =>
1542
1543                            --  Attribute Mapping_Body_Suffix (<language>)
1544
1545                            Lang_Index.Config.Mapping_Body_Suffix :=
1546                              File_Name_Type (Element.Value.Value);
1547
1548                         when Name_Config_File_Switches =>
1549
1550                            --  Attribute Config_File_Switches (<language>)
1551
1552                            List := Element.Value.Values;
1553
1554                            if List = Nil_String then
1555                               Error_Msg
1556                                 (Data.Flags,
1557                                  "config file switches cannot be null",
1558                                  Element.Value.Location, Project);
1559                            end if;
1560
1561                            Put (Into_List =>
1562                                   Lang_Index.Config.Config_File_Switches,
1563                                 From_List => List,
1564                                 In_Tree   => Data.Tree);
1565
1566                         when Name_Objects_Path =>
1567
1568                            --  Attribute Objects_Path (<language>)
1569
1570                            Lang_Index.Config.Objects_Path :=
1571                              Element.Value.Value;
1572
1573                         when Name_Objects_Path_File =>
1574
1575                            --  Attribute Objects_Path_File (<language>)
1576
1577                            Lang_Index.Config.Objects_Path_File :=
1578                              Element.Value.Value;
1579
1580                         when Name_Config_Body_File_Name =>
1581
1582                            --  Attribute Config_Body_File_Name (<language>)
1583
1584                            Lang_Index.Config.Config_Body :=
1585                              Element.Value.Value;
1586
1587                         when Name_Config_Body_File_Name_Index =>
1588
1589                            --  Attribute Config_Body_File_Name_Index
1590                            --     ( < Language > )
1591
1592                            Lang_Index.Config.Config_Body_Index :=
1593                              Element.Value.Value;
1594
1595                         when Name_Config_Body_File_Name_Pattern =>
1596
1597                            --  Attribute Config_Body_File_Name_Pattern
1598                            --    (<language>)
1599
1600                            Lang_Index.Config.Config_Body_Pattern :=
1601                              Element.Value.Value;
1602
1603                         when Name_Config_Spec_File_Name =>
1604
1605                            --  Attribute Config_Spec_File_Name (<language>)
1606
1607                            Lang_Index.Config.Config_Spec :=
1608                              Element.Value.Value;
1609
1610                         when Name_Config_Spec_File_Name_Index =>
1611
1612                            --  Attribute Config_Spec_File_Name_Index
1613                            --    ( < Language > )
1614
1615                            Lang_Index.Config.Config_Spec_Index :=
1616                              Element.Value.Value;
1617
1618                         when Name_Config_Spec_File_Name_Pattern =>
1619
1620                            --  Attribute Config_Spec_File_Name_Pattern
1621                            --    (<language>)
1622
1623                            Lang_Index.Config.Config_Spec_Pattern :=
1624                              Element.Value.Value;
1625
1626                         when Name_Config_File_Unique =>
1627
1628                            --  Attribute Config_File_Unique (<language>)
1629
1630                            begin
1631                               Lang_Index.Config.Config_File_Unique :=
1632                                 Boolean'Value
1633                                   (Get_Name_String (Element.Value.Value));
1634                            exception
1635                               when Constraint_Error =>
1636                                  Error_Msg
1637                                    (Data.Flags,
1638                                     "illegal value for Config_File_Unique",
1639                                     Element.Value.Location, Project);
1640                            end;
1641
1642                         when others =>
1643                            null;
1644                         end case;
1645                      end if;
1646                   end if;
1647
1648                   Element_Id := Element.Next;
1649                end loop;
1650
1651                Current_Array_Id := Current_Array.Next;
1652             end loop;
1653          end Process_Compiler;
1654
1655          --------------------
1656          -- Process_Naming --
1657          --------------------
1658
1659          procedure Process_Naming (Attributes : Variable_Id) is
1660             Attribute_Id : Variable_Id;
1661             Attribute    : Variable;
1662
1663          begin
1664             --  Process non associated array attribute from package Naming
1665
1666             Attribute_Id := Attributes;
1667             while Attribute_Id /= No_Variable loop
1668                Attribute := Data.Tree.Variable_Elements.Table (Attribute_Id);
1669
1670                if not Attribute.Value.Default then
1671                   if Attribute.Name = Name_Separate_Suffix then
1672
1673                      --  Attribute Separate_Suffix
1674
1675                      Get_Name_String (Attribute.Value.Value);
1676                      Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
1677                      Separate_Suffix := Name_Find;
1678
1679                   elsif Attribute.Name = Name_Casing then
1680
1681                      --  Attribute Casing
1682
1683                      begin
1684                         Casing :=
1685                           Value (Get_Name_String (Attribute.Value.Value));
1686
1687                      exception
1688                         when Constraint_Error =>
1689                            Error_Msg
1690                              (Data.Flags,
1691                               "invalid value for Casing",
1692                               Attribute.Value.Location, Project);
1693                      end;
1694
1695                   elsif Attribute.Name = Name_Dot_Replacement then
1696
1697                      --  Attribute Dot_Replacement
1698
1699                      Dot_Replacement := File_Name_Type (Attribute.Value.Value);
1700
1701                   end if;
1702                end if;
1703
1704                Attribute_Id := Attribute.Next;
1705             end loop;
1706          end Process_Naming;
1707
1708          procedure Process_Naming (Arrays : Array_Id) is
1709             Current_Array_Id : Array_Id;
1710             Current_Array    : Array_Data;
1711             Element_Id       : Array_Element_Id;
1712             Element          : Array_Element;
1713
1714          begin
1715             --  Process the associative array attribute of package Naming
1716
1717             Current_Array_Id := Arrays;
1718             while Current_Array_Id /= No_Array loop
1719                Current_Array := Data.Tree.Arrays.Table (Current_Array_Id);
1720
1721                Element_Id := Current_Array.Value;
1722                while Element_Id /= No_Array_Element loop
1723                   Element := Data.Tree.Array_Elements.Table (Element_Id);
1724
1725                   --  Get the name of the language
1726
1727                   Lang_Index := Get_Language_From_Name
1728                     (Project, Get_Name_String (Element.Index));
1729
1730                   if Lang_Index /= No_Language_Index then
1731                      case Current_Array.Name is
1732                         when Name_Spec_Suffix | Name_Specification_Suffix =>
1733
1734                            --  Attribute Spec_Suffix (<language>)
1735
1736                            Get_Name_String (Element.Value.Value);
1737                            Canonical_Case_File_Name
1738                              (Name_Buffer (1 .. Name_Len));
1739                            Lang_Index.Config.Naming_Data.Spec_Suffix :=
1740                              Name_Find;
1741
1742                         when Name_Implementation_Suffix | Name_Body_Suffix =>
1743
1744                            Get_Name_String (Element.Value.Value);
1745                            Canonical_Case_File_Name
1746                              (Name_Buffer (1 .. Name_Len));
1747
1748                            --  Attribute Body_Suffix (<language>)
1749
1750                            Lang_Index.Config.Naming_Data.Body_Suffix :=
1751                              Name_Find;
1752                            Lang_Index.Config.Naming_Data.Separate_Suffix :=
1753                              Lang_Index.Config.Naming_Data.Body_Suffix;
1754
1755                         when others =>
1756                            null;
1757                      end case;
1758                   end if;
1759
1760                   Element_Id := Element.Next;
1761                end loop;
1762
1763                Current_Array_Id := Current_Array.Next;
1764             end loop;
1765          end Process_Naming;
1766
1767          --------------------
1768          -- Process_Linker --
1769          --------------------
1770
1771          procedure Process_Linker (Attributes : Variable_Id) is
1772             Attribute_Id : Variable_Id;
1773             Attribute    : Variable;
1774
1775          begin
1776             --  Process non associated array attribute from package Linker
1777
1778             Attribute_Id := Attributes;
1779             while Attribute_Id /= No_Variable loop
1780                Attribute :=
1781                  Data.Tree.Variable_Elements.Table (Attribute_Id);
1782
1783                if not Attribute.Value.Default then
1784                   if Attribute.Name = Name_Driver then
1785
1786                      --  Attribute Linker'Driver: the default linker to use
1787
1788                      Project.Config.Linker :=
1789                        Path_Name_Type (Attribute.Value.Value);
1790
1791                      --  Linker'Driver is also used to link shared libraries
1792                      --  if the obsolescent attribute Library_GCC has not been
1793                      --  specified.
1794
1795                      if Project.Config.Shared_Lib_Driver = No_File then
1796                         Project.Config.Shared_Lib_Driver :=
1797                           File_Name_Type (Attribute.Value.Value);
1798                      end if;
1799
1800                   elsif Attribute.Name = Name_Required_Switches then
1801
1802                      --  Attribute Required_Switches: the minimum
1803                      --  options to use when invoking the linker
1804
1805                      Put (Into_List => Project.Config.Minimum_Linker_Options,
1806                           From_List => Attribute.Value.Values,
1807                           In_Tree   => Data.Tree);
1808
1809                   elsif Attribute.Name = Name_Map_File_Option then
1810                      Project.Config.Map_File_Option := Attribute.Value.Value;
1811
1812                   elsif Attribute.Name = Name_Max_Command_Line_Length then
1813                      begin
1814                         Project.Config.Max_Command_Line_Length :=
1815                           Natural'Value (Get_Name_String
1816                                          (Attribute.Value.Value));
1817
1818                      exception
1819                         when Constraint_Error =>
1820                            Error_Msg
1821                              (Data.Flags,
1822                               "value must be positive or equal to 0",
1823                               Attribute.Value.Location, Project);
1824                      end;
1825
1826                   elsif Attribute.Name = Name_Response_File_Format then
1827                      declare
1828                         Name  : Name_Id;
1829
1830                      begin
1831                         Get_Name_String (Attribute.Value.Value);
1832                         To_Lower (Name_Buffer (1 .. Name_Len));
1833                         Name := Name_Find;
1834
1835                         if Name = Name_None then
1836                            Project.Config.Resp_File_Format := None;
1837
1838                         elsif Name = Name_Gnu then
1839                            Project.Config.Resp_File_Format := GNU;
1840
1841                         elsif Name = Name_Object_List then
1842                            Project.Config.Resp_File_Format := Object_List;
1843
1844                         elsif Name = Name_Option_List then
1845                            Project.Config.Resp_File_Format := Option_List;
1846
1847                         else
1848                            Error_Msg
1849                              (Data.Flags,
1850                               "illegal response file format",
1851                               Attribute.Value.Location, Project);
1852                         end if;
1853                      end;
1854
1855                   elsif Attribute.Name = Name_Response_File_Switches then
1856                      Put (Into_List => Project.Config.Resp_File_Options,
1857                           From_List => Attribute.Value.Values,
1858                           In_Tree   => Data.Tree);
1859                   end if;
1860                end if;
1861
1862                Attribute_Id := Attribute.Next;
1863             end loop;
1864          end Process_Linker;
1865
1866       --  Start of processing for Process_Packages
1867
1868       begin
1869          Packages := Project.Decl.Packages;
1870          while Packages /= No_Package loop
1871             Element := Data.Tree.Packages.Table (Packages);
1872
1873             case Element.Name is
1874                when Name_Binder =>
1875
1876                   --  Process attributes of package Binder
1877
1878                   Process_Binder (Element.Decl.Arrays);
1879
1880                when Name_Builder =>
1881
1882                   --  Process attributes of package Builder
1883
1884                   Process_Builder (Element.Decl.Attributes);
1885
1886                when Name_Compiler =>
1887
1888                   --  Process attributes of package Compiler
1889
1890                   Process_Compiler (Element.Decl.Arrays);
1891
1892                when Name_Linker =>
1893
1894                   --  Process attributes of package Linker
1895
1896                   Process_Linker (Element.Decl.Attributes);
1897
1898                when Name_Naming =>
1899
1900                   --  Process attributes of package Naming
1901
1902                   Process_Naming (Element.Decl.Attributes);
1903                   Process_Naming (Element.Decl.Arrays);
1904
1905                when others =>
1906                   null;
1907             end case;
1908
1909             Packages := Element.Next;
1910          end loop;
1911       end Process_Packages;
1912
1913       ---------------------------------------------
1914       -- Process_Project_Level_Simple_Attributes --
1915       ---------------------------------------------
1916
1917       procedure Process_Project_Level_Simple_Attributes is
1918          Attribute_Id : Variable_Id;
1919          Attribute    : Variable;
1920          List         : String_List_Id;
1921
1922       begin
1923          --  Process non associated array attribute at project level
1924
1925          Attribute_Id := Project.Decl.Attributes;
1926          while Attribute_Id /= No_Variable loop
1927             Attribute :=
1928               Data.Tree.Variable_Elements.Table (Attribute_Id);
1929
1930             if not Attribute.Value.Default then
1931                if Attribute.Name = Name_Target then
1932
1933                   --  Attribute Target: the target specified
1934
1935                   Project.Config.Target := Attribute.Value.Value;
1936
1937                elsif Attribute.Name = Name_Library_Builder then
1938
1939                   --  Attribute Library_Builder: the application to invoke
1940                   --  to build libraries.
1941
1942                   Project.Config.Library_Builder :=
1943                     Path_Name_Type (Attribute.Value.Value);
1944
1945                elsif Attribute.Name = Name_Archive_Builder then
1946
1947                   --  Attribute Archive_Builder: the archive builder
1948                   --  (usually "ar") and its minimum options (usually "cr").
1949
1950                   List := Attribute.Value.Values;
1951
1952                   if List = Nil_String then
1953                      Error_Msg
1954                        (Data.Flags,
1955                         "archive builder cannot be null",
1956                         Attribute.Value.Location, Project);
1957                   end if;
1958
1959                   Put (Into_List => Project.Config.Archive_Builder,
1960                        From_List => List,
1961                        In_Tree   => Data.Tree);
1962
1963                elsif Attribute.Name = Name_Archive_Builder_Append_Option then
1964
1965                   --  Attribute Archive_Builder: the archive builder
1966                   --  (usually "ar") and its minimum options (usually "cr").
1967
1968                   List := Attribute.Value.Values;
1969
1970                   if List /= Nil_String then
1971                      Put
1972                        (Into_List =>
1973                           Project.Config.Archive_Builder_Append_Option,
1974                         From_List => List,
1975                         In_Tree   => Data.Tree);
1976                   end if;
1977
1978                elsif Attribute.Name = Name_Archive_Indexer then
1979
1980                   --  Attribute Archive_Indexer: the optional archive
1981                   --  indexer (usually "ranlib") with its minimum options
1982                   --  (usually none).
1983
1984                   List := Attribute.Value.Values;
1985
1986                   if List = Nil_String then
1987                      Error_Msg
1988                        (Data.Flags,
1989                         "archive indexer cannot be null",
1990                         Attribute.Value.Location, Project);
1991                   end if;
1992
1993                   Put (Into_List => Project.Config.Archive_Indexer,
1994                        From_List => List,
1995                        In_Tree   => Data.Tree);
1996
1997                elsif Attribute.Name = Name_Library_Partial_Linker then
1998
1999                   --  Attribute Library_Partial_Linker: the optional linker
2000                   --  driver with its minimum options, to partially link
2001                   --  archives.
2002
2003                   List := Attribute.Value.Values;
2004
2005                   if List = Nil_String then
2006                      Error_Msg
2007                        (Data.Flags,
2008                         "partial linker cannot be null",
2009                         Attribute.Value.Location, Project);
2010                   end if;
2011
2012                   Put (Into_List => Project.Config.Lib_Partial_Linker,
2013                        From_List => List,
2014                        In_Tree   => Data.Tree);
2015
2016                elsif Attribute.Name = Name_Library_GCC then
2017                   Project.Config.Shared_Lib_Driver :=
2018                     File_Name_Type (Attribute.Value.Value);
2019                   Error_Msg
2020                     (Data.Flags,
2021                      "?Library_'G'C'C is an obsolescent attribute, " &
2022                      "use Linker''Driver instead",
2023                      Attribute.Value.Location, Project);
2024
2025                elsif Attribute.Name = Name_Archive_Suffix then
2026                   Project.Config.Archive_Suffix :=
2027                     File_Name_Type (Attribute.Value.Value);
2028
2029                elsif Attribute.Name = Name_Linker_Executable_Option then
2030
2031                   --  Attribute Linker_Executable_Option: optional options
2032                   --  to specify an executable name. Defaults to "-o".
2033
2034                   List := Attribute.Value.Values;
2035
2036                   if List = Nil_String then
2037                      Error_Msg
2038                        (Data.Flags,
2039                         "linker executable option cannot be null",
2040                         Attribute.Value.Location, Project);
2041                   end if;
2042
2043                   Put (Into_List => Project.Config.Linker_Executable_Option,
2044                        From_List => List,
2045                        In_Tree   => Data.Tree);
2046
2047                elsif Attribute.Name = Name_Linker_Lib_Dir_Option then
2048
2049                   --  Attribute Linker_Lib_Dir_Option: optional options
2050                   --  to specify a library search directory. Defaults to
2051                   --  "-L".
2052
2053                   Get_Name_String (Attribute.Value.Value);
2054
2055                   if Name_Len = 0 then
2056                      Error_Msg
2057                        (Data.Flags,
2058                         "linker library directory option cannot be empty",
2059                         Attribute.Value.Location, Project);
2060                   end if;
2061
2062                   Project.Config.Linker_Lib_Dir_Option :=
2063                     Attribute.Value.Value;
2064
2065                elsif Attribute.Name = Name_Linker_Lib_Name_Option then
2066
2067                   --  Attribute Linker_Lib_Name_Option: optional options
2068                   --  to specify the name of a library to be linked in.
2069                   --  Defaults to "-l".
2070
2071                   Get_Name_String (Attribute.Value.Value);
2072
2073                   if Name_Len = 0 then
2074                      Error_Msg
2075                        (Data.Flags,
2076                         "linker library name option cannot be empty",
2077                         Attribute.Value.Location, Project);
2078                   end if;
2079
2080                   Project.Config.Linker_Lib_Name_Option :=
2081                     Attribute.Value.Value;
2082
2083                elsif Attribute.Name = Name_Run_Path_Option then
2084
2085                   --  Attribute Run_Path_Option: optional options to
2086                   --  specify a path for libraries.
2087
2088                   List := Attribute.Value.Values;
2089
2090                   if List /= Nil_String then
2091                      Put (Into_List => Project.Config.Run_Path_Option,
2092                           From_List => List,
2093                           In_Tree   => Data.Tree);
2094                   end if;
2095
2096                elsif Attribute.Name = Name_Separate_Run_Path_Options then
2097                   declare
2098                      pragma Unsuppress (All_Checks);
2099                   begin
2100                      Project.Config.Separate_Run_Path_Options :=
2101                        Boolean'Value (Get_Name_String (Attribute.Value.Value));
2102                   exception
2103                      when Constraint_Error =>
2104                         Error_Msg
2105                           (Data.Flags,
2106                            "invalid value """ &
2107                            Get_Name_String (Attribute.Value.Value) &
2108                            """ for Separate_Run_Path_Options",
2109                            Attribute.Value.Location, Project);
2110                   end;
2111
2112                elsif Attribute.Name = Name_Library_Support then
2113                   declare
2114                      pragma Unsuppress (All_Checks);
2115                   begin
2116                      Project.Config.Lib_Support :=
2117                        Library_Support'Value (Get_Name_String
2118                                               (Attribute.Value.Value));
2119                   exception
2120                      when Constraint_Error =>
2121                         Error_Msg
2122                           (Data.Flags,
2123                            "invalid value """ &
2124                            Get_Name_String (Attribute.Value.Value) &
2125                            """ for Library_Support",
2126                            Attribute.Value.Location, Project);
2127                   end;
2128
2129                elsif Attribute.Name = Name_Shared_Library_Prefix then
2130                   Project.Config.Shared_Lib_Prefix :=
2131                     File_Name_Type (Attribute.Value.Value);
2132
2133                elsif Attribute.Name = Name_Shared_Library_Suffix then
2134                   Project.Config.Shared_Lib_Suffix :=
2135                     File_Name_Type (Attribute.Value.Value);
2136
2137                elsif Attribute.Name = Name_Symbolic_Link_Supported then
2138                   declare
2139                      pragma Unsuppress (All_Checks);
2140                   begin
2141                      Project.Config.Symbolic_Link_Supported :=
2142                        Boolean'Value (Get_Name_String
2143                                       (Attribute.Value.Value));
2144                   exception
2145                      when Constraint_Error =>
2146                         Error_Msg
2147                           (Data.Flags,
2148                            "invalid value """
2149                              & Get_Name_String (Attribute.Value.Value)
2150                              & """ for Symbolic_Link_Supported",
2151                            Attribute.Value.Location, Project);
2152                   end;
2153
2154                elsif
2155                  Attribute.Name = Name_Library_Major_Minor_Id_Supported
2156                then
2157                   declare
2158                      pragma Unsuppress (All_Checks);
2159                   begin
2160                      Project.Config.Lib_Maj_Min_Id_Supported :=
2161                        Boolean'Value (Get_Name_String
2162                                       (Attribute.Value.Value));
2163                   exception
2164                      when Constraint_Error =>
2165                         Error_Msg
2166                           (Data.Flags,
2167                            "invalid value """ &
2168                            Get_Name_String (Attribute.Value.Value) &
2169                            """ for Library_Major_Minor_Id_Supported",
2170                            Attribute.Value.Location, Project);
2171                   end;
2172
2173                elsif Attribute.Name = Name_Library_Auto_Init_Supported then
2174                   declare
2175                      pragma Unsuppress (All_Checks);
2176                   begin
2177                      Project.Config.Auto_Init_Supported :=
2178                        Boolean'Value (Get_Name_String (Attribute.Value.Value));
2179                   exception
2180                      when Constraint_Error =>
2181                         Error_Msg
2182                           (Data.Flags,
2183                            "invalid value """
2184                              & Get_Name_String (Attribute.Value.Value)
2185                              & """ for Library_Auto_Init_Supported",
2186                            Attribute.Value.Location, Project);
2187                   end;
2188
2189                elsif Attribute.Name = Name_Shared_Library_Minimum_Switches then
2190                   List := Attribute.Value.Values;
2191
2192                   if List /= Nil_String then
2193                      Put (Into_List => Project.Config.Shared_Lib_Min_Options,
2194                           From_List => List,
2195                           In_Tree   => Data.Tree);
2196                   end if;
2197
2198                elsif Attribute.Name = Name_Library_Version_Switches then
2199                   List := Attribute.Value.Values;
2200
2201                   if List /= Nil_String then
2202                      Put (Into_List => Project.Config.Lib_Version_Options,
2203                           From_List => List,
2204                           In_Tree   => Data.Tree);
2205                   end if;
2206                end if;
2207             end if;
2208
2209             Attribute_Id := Attribute.Next;
2210          end loop;
2211       end Process_Project_Level_Simple_Attributes;
2212
2213       --------------------------------------------
2214       -- Process_Project_Level_Array_Attributes --
2215       --------------------------------------------
2216
2217       procedure Process_Project_Level_Array_Attributes is
2218          Current_Array_Id : Array_Id;
2219          Current_Array    : Array_Data;
2220          Element_Id       : Array_Element_Id;
2221          Element          : Array_Element;
2222          List             : String_List_Id;
2223
2224       begin
2225          --  Process the associative array attributes at project level
2226
2227          Current_Array_Id := Project.Decl.Arrays;
2228          while Current_Array_Id /= No_Array loop
2229             Current_Array := Data.Tree.Arrays.Table (Current_Array_Id);
2230
2231             Element_Id := Current_Array.Value;
2232             while Element_Id /= No_Array_Element loop
2233                Element := Data.Tree.Array_Elements.Table (Element_Id);
2234
2235                --  Get the name of the language
2236
2237                Lang_Index :=
2238                  Get_Language_From_Name
2239                    (Project, Get_Name_String (Element.Index));
2240
2241                if Lang_Index /= No_Language_Index then
2242                   case Current_Array.Name is
2243                      when Name_Inherit_Source_Path =>
2244                         List := Element.Value.Values;
2245
2246                         if List /= Nil_String then
2247                            Put
2248                              (Into_List  =>
2249                                 Lang_Index.Config.Include_Compatible_Languages,
2250                               From_List  => List,
2251                               In_Tree    => Data.Tree,
2252                               Lower_Case => True);
2253                         end if;
2254
2255                      when Name_Toolchain_Description =>
2256
2257                         --  Attribute Toolchain_Description (<language>)
2258
2259                         Lang_Index.Config.Toolchain_Description :=
2260                           Element.Value.Value;
2261
2262                      when Name_Toolchain_Version =>
2263
2264                         --  Attribute Toolchain_Version (<language>)
2265
2266                         Lang_Index.Config.Toolchain_Version :=
2267                           Element.Value.Value;
2268
2269                      when Name_Runtime_Library_Dir =>
2270
2271                         --  Attribute Runtime_Library_Dir (<language>)
2272
2273                         Lang_Index.Config.Runtime_Library_Dir :=
2274                           Element.Value.Value;
2275
2276                      when Name_Runtime_Source_Dir =>
2277
2278                         --  Attribute Runtime_Library_Dir (<language>)
2279
2280                         Lang_Index.Config.Runtime_Source_Dir :=
2281                           Element.Value.Value;
2282
2283                      when Name_Object_Generated =>
2284                         declare
2285                            pragma Unsuppress (All_Checks);
2286                            Value : Boolean;
2287
2288                         begin
2289                            Value :=
2290                              Boolean'Value
2291                                (Get_Name_String (Element.Value.Value));
2292
2293                            Lang_Index.Config.Object_Generated := Value;
2294
2295                            --  If no object is generated, no object may be
2296                            --  linked.
2297
2298                            if not Value then
2299                               Lang_Index.Config.Objects_Linked := False;
2300                            end if;
2301
2302                         exception
2303                            when Constraint_Error =>
2304                               Error_Msg
2305                                 (Data.Flags,
2306                                  "invalid value """
2307                                  & Get_Name_String (Element.Value.Value)
2308                                  & """ for Object_Generated",
2309                                  Element.Value.Location, Project);
2310                         end;
2311
2312                      when Name_Objects_Linked =>
2313                         declare
2314                            pragma Unsuppress (All_Checks);
2315                            Value : Boolean;
2316
2317                         begin
2318                            Value :=
2319                              Boolean'Value
2320                                (Get_Name_String (Element.Value.Value));
2321
2322                            --  No change if Object_Generated is False, as this
2323                            --  forces Objects_Linked to be False too.
2324
2325                            if Lang_Index.Config.Object_Generated then
2326                               Lang_Index.Config.Objects_Linked := Value;
2327                            end if;
2328
2329                         exception
2330                            when Constraint_Error =>
2331                               Error_Msg
2332                                 (Data.Flags,
2333                                  "invalid value """
2334                                  & Get_Name_String (Element.Value.Value)
2335                                  & """ for Objects_Linked",
2336                                  Element.Value.Location, Project);
2337                         end;
2338                      when others =>
2339                         null;
2340                   end case;
2341                end if;
2342
2343                Element_Id := Element.Next;
2344             end loop;
2345
2346             Current_Array_Id := Current_Array.Next;
2347          end loop;
2348       end Process_Project_Level_Array_Attributes;
2349
2350    --  Start of processing for Check_Configuration
2351
2352    begin
2353       Process_Project_Level_Simple_Attributes;
2354       Process_Project_Level_Array_Attributes;
2355       Process_Packages;
2356
2357       --  For unit based languages, set Casing, Dot_Replacement and
2358       --  Separate_Suffix in Naming_Data.
2359
2360       Lang_Index := Project.Languages;
2361       while Lang_Index /= No_Language_Index loop
2362          if Lang_Index.Name = Name_Ada then
2363             Lang_Index.Config.Naming_Data.Casing := Casing;
2364             Lang_Index.Config.Naming_Data.Dot_Replacement := Dot_Replacement;
2365
2366             if Separate_Suffix /= No_File then
2367                Lang_Index.Config.Naming_Data.Separate_Suffix :=
2368                  Separate_Suffix;
2369             end if;
2370
2371             exit;
2372          end if;
2373
2374          Lang_Index := Lang_Index.Next;
2375       end loop;
2376
2377       --  Give empty names to various prefixes/suffixes, if they have not
2378       --  been specified in the configuration.
2379
2380       if Project.Config.Archive_Suffix = No_File then
2381          Project.Config.Archive_Suffix := Empty_File;
2382       end if;
2383
2384       if Project.Config.Shared_Lib_Prefix = No_File then
2385          Project.Config.Shared_Lib_Prefix := Empty_File;
2386       end if;
2387
2388       if Project.Config.Shared_Lib_Suffix = No_File then
2389          Project.Config.Shared_Lib_Suffix := Empty_File;
2390       end if;
2391
2392       Lang_Index := Project.Languages;
2393       while Lang_Index /= No_Language_Index loop
2394
2395          --  For all languages, Compiler_Driver needs to be specified. This is
2396          --  only needed if we do intend to compile (not in GPS for instance).
2397
2398          if Data.Flags.Compiler_Driver_Mandatory
2399            and then Lang_Index.Config.Compiler_Driver = No_File
2400          then
2401             Error_Msg_Name_1 := Lang_Index.Display_Name;
2402             Error_Msg
2403               (Data.Flags,
2404                "?no compiler specified for language %%" &
2405                  ", ignoring all its sources",
2406                No_Location, Project);
2407
2408             if Lang_Index = Project.Languages then
2409                Project.Languages := Lang_Index.Next;
2410             else
2411                Prev_Index.Next := Lang_Index.Next;
2412             end if;
2413
2414          elsif Lang_Index.Name = Name_Ada then
2415             Prev_Index := Lang_Index;
2416
2417             --  For unit based languages, Dot_Replacement, Spec_Suffix and
2418             --  Body_Suffix need to be specified.
2419
2420             if Lang_Index.Config.Naming_Data.Dot_Replacement = No_File then
2421                Error_Msg
2422                  (Data.Flags,
2423                   "Dot_Replacement not specified for Ada",
2424                   No_Location, Project);
2425             end if;
2426
2427             if Lang_Index.Config.Naming_Data.Spec_Suffix = No_File then
2428                Error_Msg
2429                  (Data.Flags,
2430                   "Spec_Suffix not specified for Ada",
2431                   No_Location, Project);
2432             end if;
2433
2434             if Lang_Index.Config.Naming_Data.Body_Suffix = No_File then
2435                Error_Msg
2436                  (Data.Flags,
2437                   "Body_Suffix not specified for Ada",
2438                   No_Location, Project);
2439             end if;
2440
2441          else
2442             Prev_Index := Lang_Index;
2443
2444             --  For file based languages, either Spec_Suffix or Body_Suffix
2445             --  need to be specified.
2446
2447             if Data.Flags.Require_Sources_Other_Lang
2448               and then Lang_Index.Config.Naming_Data.Spec_Suffix = No_File
2449               and then Lang_Index.Config.Naming_Data.Body_Suffix = No_File
2450             then
2451                Error_Msg_Name_1 := Lang_Index.Display_Name;
2452                Error_Msg
2453                  (Data.Flags,
2454                   "no suffixes specified for %%",
2455                   No_Location, Project);
2456             end if;
2457          end if;
2458
2459          Lang_Index := Lang_Index.Next;
2460       end loop;
2461    end Check_Configuration;
2462
2463    -------------------------------
2464    -- Check_If_Externally_Built --
2465    -------------------------------
2466
2467    procedure Check_If_Externally_Built
2468      (Project : Project_Id;
2469       Data    : in out Tree_Processing_Data)
2470    is
2471       Externally_Built : constant Variable_Value :=
2472                            Util.Value_Of
2473                             (Name_Externally_Built,
2474                              Project.Decl.Attributes, Data.Tree);
2475
2476    begin
2477       if not Externally_Built.Default then
2478          Get_Name_String (Externally_Built.Value);
2479          To_Lower (Name_Buffer (1 .. Name_Len));
2480
2481          if Name_Buffer (1 .. Name_Len) = "true" then
2482             Project.Externally_Built := True;
2483
2484          elsif Name_Buffer (1 .. Name_Len) /= "false" then
2485             Error_Msg (Data.Flags,
2486                        "Externally_Built may only be true or false",
2487                        Externally_Built.Location, Project);
2488          end if;
2489       end if;
2490
2491       --  A virtual project extending an externally built project is itself
2492       --  externally built.
2493
2494       if Project.Virtual and then Project.Extends /= No_Project then
2495          Project.Externally_Built := Project.Extends.Externally_Built;
2496       end if;
2497
2498       if Current_Verbosity = High then
2499          Write_Str ("Project is ");
2500
2501          if not Project.Externally_Built then
2502             Write_Str ("not ");
2503          end if;
2504
2505          Write_Line ("externally built.");
2506       end if;
2507    end Check_If_Externally_Built;
2508
2509    ----------------------
2510    -- Check_Interfaces --
2511    ----------------------
2512
2513    procedure Check_Interfaces
2514      (Project : Project_Id;
2515       Data    : in out Tree_Processing_Data)
2516    is
2517       Interfaces : constant Prj.Variable_Value :=
2518                      Prj.Util.Value_Of
2519                        (Snames.Name_Interfaces,
2520                         Project.Decl.Attributes,
2521                         Data.Tree);
2522
2523       Library_Interface : constant Prj.Variable_Value :=
2524                             Prj.Util.Value_Of
2525                               (Snames.Name_Library_Interface,
2526                                Project.Decl.Attributes,
2527                                Data.Tree);
2528
2529       List      : String_List_Id;
2530       Element   : String_Element;
2531       Name      : File_Name_Type;
2532       Iter      : Source_Iterator;
2533       Source    : Source_Id;
2534       Project_2 : Project_Id;
2535       Other     : Source_Id;
2536
2537    begin
2538       if not Interfaces.Default then
2539
2540          --  Set In_Interfaces to False for all sources. It will be set to True
2541          --  later for the sources in the Interfaces list.
2542
2543          Project_2 := Project;
2544          while Project_2 /= No_Project loop
2545             Iter := For_Each_Source (Data.Tree, Project_2);
2546             loop
2547                Source := Prj.Element (Iter);
2548                exit when Source = No_Source;
2549                Source.In_Interfaces := False;
2550                Next (Iter);
2551             end loop;
2552
2553             Project_2 := Project_2.Extends;
2554          end loop;
2555
2556          List := Interfaces.Values;
2557          while List /= Nil_String loop
2558             Element := Data.Tree.String_Elements.Table (List);
2559             Name := Canonical_Case_File_Name (Element.Value);
2560
2561             Project_2 := Project;
2562             Big_Loop :
2563             while Project_2 /= No_Project loop
2564                Iter := For_Each_Source (Data.Tree, Project_2);
2565
2566                loop
2567                   Source := Prj.Element (Iter);
2568                   exit when Source = No_Source;
2569
2570                   if Source.File = Name then
2571                      if not Source.Locally_Removed then
2572                         Source.In_Interfaces := True;
2573                         Source.Declared_In_Interfaces := True;
2574
2575                         Other := Other_Part (Source);
2576
2577                         if Other /= No_Source then
2578                            Other.In_Interfaces := True;
2579                            Other.Declared_In_Interfaces := True;
2580                         end if;
2581
2582                         if Current_Verbosity = High then
2583                            Write_Str ("   interface: ");
2584                            Write_Line (Get_Name_String (Source.Path.Name));
2585                         end if;
2586                      end if;
2587
2588                      exit Big_Loop;
2589                   end if;
2590
2591                   Next (Iter);
2592                end loop;
2593
2594                Project_2 := Project_2.Extends;
2595             end loop Big_Loop;
2596
2597             if Source = No_Source then
2598                Error_Msg_File_1 := File_Name_Type (Element.Value);
2599                Error_Msg_Name_1 := Project.Name;
2600
2601                Error_Msg
2602                  (Data.Flags,
2603                   "{ cannot be an interface of project %% "
2604                   & "as it is not one of its sources",
2605                   Element.Location, Project);
2606             end if;
2607
2608             List := Element.Next;
2609          end loop;
2610
2611          Project.Interfaces_Defined := True;
2612
2613       elsif Project.Library and then not Library_Interface.Default then
2614
2615          --  Set In_Interfaces to False for all sources. It will be set to True
2616          --  later for the sources in the Library_Interface list.
2617
2618          Project_2 := Project;
2619          while Project_2 /= No_Project loop
2620             Iter := For_Each_Source (Data.Tree, Project_2);
2621             loop
2622                Source := Prj.Element (Iter);
2623                exit when Source = No_Source;
2624                Source.In_Interfaces := False;
2625                Next (Iter);
2626             end loop;
2627
2628             Project_2 := Project_2.Extends;
2629          end loop;
2630
2631          List := Library_Interface.Values;
2632          while List /= Nil_String loop
2633             Element := Data.Tree.String_Elements.Table (List);
2634             Get_Name_String (Element.Value);
2635             To_Lower (Name_Buffer (1 .. Name_Len));
2636             Name := Name_Find;
2637
2638             Project_2 := Project;
2639             Big_Loop_2 :
2640             while Project_2 /= No_Project loop
2641                Iter := For_Each_Source (Data.Tree, Project_2);
2642
2643                loop
2644                   Source := Prj.Element (Iter);
2645                   exit when Source = No_Source;
2646
2647                   if Source.Unit /= No_Unit_Index and then
2648                      Source.Unit.Name = Name_Id (Name)
2649                   then
2650                      if not Source.Locally_Removed then
2651                         Source.In_Interfaces := True;
2652                         Source.Declared_In_Interfaces := True;
2653
2654                         Other := Other_Part (Source);
2655
2656                         if Other /= No_Source then
2657                            Other.In_Interfaces := True;
2658                            Other.Declared_In_Interfaces := True;
2659                         end if;
2660
2661                         if Current_Verbosity = High then
2662                            Write_Str ("   interface: ");
2663                            Write_Line (Get_Name_String (Source.Path.Name));
2664                         end if;
2665                      end if;
2666
2667                      exit Big_Loop_2;
2668                   end if;
2669
2670                   Next (Iter);
2671                end loop;
2672
2673                Project_2 := Project_2.Extends;
2674             end loop Big_Loop_2;
2675
2676             List := Element.Next;
2677          end loop;
2678
2679          Project.Interfaces_Defined := True;
2680
2681       elsif Project.Extends /= No_Project
2682         and then Project.Extends.Interfaces_Defined
2683       then
2684          Project.Interfaces_Defined := True;
2685
2686          Iter := For_Each_Source (Data.Tree, Project);
2687          loop
2688             Source := Prj.Element (Iter);
2689             exit when Source = No_Source;
2690
2691             if not Source.Declared_In_Interfaces then
2692                Source.In_Interfaces := False;
2693             end if;
2694
2695             Next (Iter);
2696          end loop;
2697       end if;
2698    end Check_Interfaces;
2699
2700    --------------------------
2701    -- Check_Package_Naming --
2702    --------------------------
2703
2704    procedure Check_Package_Naming
2705      (Project : Project_Id;
2706       Data    : in out Tree_Processing_Data;
2707       Bodies  : out Array_Element_Id;
2708       Specs   : out Array_Element_Id)
2709    is
2710       Naming_Id : constant Package_Id :=
2711                     Util.Value_Of
2712                       (Name_Naming, Project.Decl.Packages, Data.Tree);
2713       Naming    : Package_Element;
2714
2715       Ada_Body_Suffix_Loc : Source_Ptr := No_Location;
2716
2717       procedure Check_Naming;
2718       --  Check the validity of the Naming package (suffixes valid, ...)
2719
2720       procedure Check_Common
2721         (Dot_Replacement : in out File_Name_Type;
2722          Casing          : in out Casing_Type;
2723          Casing_Defined  : out Boolean;
2724          Separate_Suffix : in out File_Name_Type;
2725          Sep_Suffix_Loc  : out Source_Ptr);
2726       --  Check attributes common
2727
2728       procedure Process_Exceptions_File_Based
2729         (Lang_Id : Language_Ptr;
2730          Kind    : Source_Kind);
2731       procedure Process_Exceptions_Unit_Based
2732         (Lang_Id : Language_Ptr;
2733          Kind    : Source_Kind);
2734       --  Process the naming exceptions for the two types of languages
2735
2736       procedure Initialize_Naming_Data;
2737       --  Initialize internal naming data for the various languages
2738
2739       ------------------
2740       -- Check_Common --
2741       ------------------
2742
2743       procedure Check_Common
2744         (Dot_Replacement : in out File_Name_Type;
2745          Casing          : in out Casing_Type;
2746          Casing_Defined  : out Boolean;
2747          Separate_Suffix : in out File_Name_Type;
2748          Sep_Suffix_Loc  : out Source_Ptr)
2749       is
2750          Dot_Repl      : constant Variable_Value :=
2751                            Util.Value_Of
2752                              (Name_Dot_Replacement,
2753                               Naming.Decl.Attributes,
2754                               Data.Tree);
2755          Casing_String : constant Variable_Value :=
2756                            Util.Value_Of
2757                              (Name_Casing,
2758                               Naming.Decl.Attributes,
2759                               Data.Tree);
2760          Sep_Suffix    : constant Variable_Value :=
2761                            Util.Value_Of
2762                              (Name_Separate_Suffix,
2763                               Naming.Decl.Attributes,
2764                               Data.Tree);
2765          Dot_Repl_Loc  : Source_Ptr;
2766
2767       begin
2768          Sep_Suffix_Loc := No_Location;
2769
2770          if not Dot_Repl.Default then
2771             pragma Assert
2772               (Dot_Repl.Kind = Single, "Dot_Replacement is not a string");
2773
2774             if Length_Of_Name (Dot_Repl.Value) = 0 then
2775                Error_Msg
2776                  (Data.Flags, "Dot_Replacement cannot be empty",
2777                   Dot_Repl.Location, Project);
2778             end if;
2779
2780             Dot_Replacement := Canonical_Case_File_Name (Dot_Repl.Value);
2781             Dot_Repl_Loc    := Dot_Repl.Location;
2782
2783             declare
2784                Repl : constant String := Get_Name_String (Dot_Replacement);
2785
2786             begin
2787                --  Dot_Replacement cannot
2788                --   - be empty
2789                --   - start or end with an alphanumeric
2790                --   - be a single '_'
2791                --   - start with an '_' followed by an alphanumeric
2792                --   - contain a '.' except if it is "."
2793
2794                if Repl'Length = 0
2795                  or else Is_Alphanumeric (Repl (Repl'First))
2796                  or else Is_Alphanumeric (Repl (Repl'Last))
2797                  or else (Repl (Repl'First) = '_'
2798                            and then
2799                              (Repl'Length = 1
2800                                or else
2801                                  Is_Alphanumeric (Repl (Repl'First + 1))))
2802                  or else (Repl'Length > 1
2803                            and then
2804                              Index (Source => Repl, Pattern => ".") /= 0)
2805                then
2806                   Error_Msg
2807                     (Data.Flags,
2808                      '"' & Repl &
2809                      """ is illegal for Dot_Replacement.",
2810                      Dot_Repl_Loc, Project);
2811                end if;
2812             end;
2813          end if;
2814
2815          if Dot_Replacement /= No_File then
2816             Write_Attr
2817               ("Dot_Replacement", Get_Name_String (Dot_Replacement));
2818          end if;
2819
2820          Casing_Defined := False;
2821
2822          if not Casing_String.Default then
2823             pragma Assert
2824               (Casing_String.Kind = Single, "Casing is not a string");
2825
2826             declare
2827                Casing_Image : constant String :=
2828                                 Get_Name_String (Casing_String.Value);
2829
2830             begin
2831                if Casing_Image'Length = 0 then
2832                   Error_Msg
2833                     (Data.Flags,
2834                      "Casing cannot be an empty string",
2835                      Casing_String.Location, Project);
2836                end if;
2837
2838                Casing := Value (Casing_Image);
2839                Casing_Defined := True;
2840
2841             exception
2842                when Constraint_Error =>
2843                   Name_Len := Casing_Image'Length;
2844                   Name_Buffer (1 .. Name_Len) := Casing_Image;
2845                   Err_Vars.Error_Msg_Name_1 := Name_Find;
2846                   Error_Msg
2847                     (Data.Flags,
2848                      "%% is not a correct Casing",
2849                      Casing_String.Location, Project);
2850             end;
2851          end if;
2852
2853          Write_Attr ("Casing", Image (Casing));
2854
2855          if not Sep_Suffix.Default then
2856             if Length_Of_Name (Sep_Suffix.Value) = 0 then
2857                Error_Msg
2858                  (Data.Flags,
2859                   "Separate_Suffix cannot be empty",
2860                   Sep_Suffix.Location, Project);
2861
2862             else
2863                Separate_Suffix := Canonical_Case_File_Name (Sep_Suffix.Value);
2864                Sep_Suffix_Loc  := Sep_Suffix.Location;
2865
2866                Check_Illegal_Suffix
2867                  (Project, Separate_Suffix,
2868                   Dot_Replacement, "Separate_Suffix", Sep_Suffix.Location,
2869                   Data);
2870             end if;
2871          end if;
2872
2873          if Separate_Suffix /= No_File then
2874             Write_Attr
2875               ("Separate_Suffix", Get_Name_String (Separate_Suffix));
2876          end if;
2877       end Check_Common;
2878
2879       -----------------------------------
2880       -- Process_Exceptions_File_Based --
2881       -----------------------------------
2882
2883       procedure Process_Exceptions_File_Based
2884         (Lang_Id : Language_Ptr;
2885          Kind    : Source_Kind)
2886       is
2887          Lang           : constant Name_Id := Lang_Id.Name;
2888          Exceptions     : Array_Element_Id;
2889          Exception_List : Variable_Value;
2890          Element_Id     : String_List_Id;
2891          Element        : String_Element;
2892          File_Name      : File_Name_Type;
2893          Source         : Source_Id;
2894          Iter           : Source_Iterator;
2895
2896       begin
2897          case Kind is
2898             when Impl | Sep =>
2899                Exceptions :=
2900                  Value_Of
2901                    (Name_Implementation_Exceptions,
2902                     In_Arrays => Naming.Decl.Arrays,
2903                     In_Tree   => Data.Tree);
2904
2905             when Spec =>
2906                Exceptions :=
2907                  Value_Of
2908                    (Name_Specification_Exceptions,
2909                     In_Arrays => Naming.Decl.Arrays,
2910                     In_Tree   => Data.Tree);
2911          end case;
2912
2913          Exception_List := Value_Of
2914            (Index    => Lang,
2915             In_Array => Exceptions,
2916             In_Tree  => Data.Tree);
2917
2918          if Exception_List /= Nil_Variable_Value then
2919             Element_Id := Exception_List.Values;
2920             while Element_Id /= Nil_String loop
2921                Element   := Data.Tree.String_Elements.Table (Element_Id);
2922                File_Name := Canonical_Case_File_Name (Element.Value);
2923
2924                Iter := For_Each_Source (Data.Tree, Project);
2925                loop
2926                   Source := Prj.Element (Iter);
2927                   exit when Source = No_Source or else Source.File = File_Name;
2928                   Next (Iter);
2929                end loop;
2930
2931                if Source = No_Source then
2932                   Add_Source
2933                     (Id               => Source,
2934                      Data             => Data,
2935                      Project          => Project,
2936                      Source_Dir_Rank  => 0,
2937                      Lang_Id          => Lang_Id,
2938                      Kind             => Kind,
2939                      File_Name        => File_Name,
2940                      Display_File     => File_Name_Type (Element.Value),
2941                      Naming_Exception => True);
2942
2943                else
2944                   --  Check if the file name is already recorded for another
2945                   --  language or another kind.
2946
2947                   if Source.Language /= Lang_Id then
2948                      Error_Msg
2949                        (Data.Flags,
2950                         "the same file cannot be a source of two languages",
2951                         Element.Location, Project);
2952
2953                   elsif Source.Kind /= Kind then
2954                      Error_Msg
2955                        (Data.Flags,
2956                         "the same file cannot be a source and a template",
2957                         Element.Location, Project);
2958                   end if;
2959
2960                   --  If the file is already recorded for the same
2961                   --  language and the same kind, it means that the file
2962                   --  name appears several times in the *_Exceptions
2963                   --  attribute; so there is nothing to do.
2964                end if;
2965
2966                Element_Id := Element.Next;
2967             end loop;
2968          end if;
2969       end Process_Exceptions_File_Based;
2970
2971       -----------------------------------
2972       -- Process_Exceptions_Unit_Based --
2973       -----------------------------------
2974
2975       procedure Process_Exceptions_Unit_Based
2976         (Lang_Id : Language_Ptr;
2977          Kind    : Source_Kind)
2978       is
2979          Lang       : constant Name_Id := Lang_Id.Name;
2980          Exceptions : Array_Element_Id;
2981          Element    : Array_Element;
2982          Unit       : Name_Id;
2983          Index      : Int;
2984          File_Name  : File_Name_Type;
2985          Source     : Source_Id;
2986
2987       begin
2988          case Kind is
2989             when Impl | Sep =>
2990                Exceptions :=
2991                  Value_Of
2992                    (Name_Body,
2993                     In_Arrays => Naming.Decl.Arrays,
2994                     In_Tree   => Data.Tree);
2995
2996                if Exceptions = No_Array_Element then
2997                   Exceptions :=
2998                     Value_Of
2999                       (Name_Implementation,
3000                        In_Arrays => Naming.Decl.Arrays,
3001                        In_Tree   => Data.Tree);
3002                end if;
3003
3004             when Spec =>
3005                Exceptions :=
3006                  Value_Of
3007                    (Name_Spec,
3008                     In_Arrays => Naming.Decl.Arrays,
3009                     In_Tree   => Data.Tree);
3010
3011                if Exceptions = No_Array_Element then
3012                   Exceptions :=
3013                     Value_Of
3014                       (Name_Spec,
3015                        In_Arrays => Naming.Decl.Arrays,
3016                        In_Tree   => Data.Tree);
3017                end if;
3018          end case;
3019
3020          while Exceptions /= No_Array_Element loop
3021             Element   := Data.Tree.Array_Elements.Table (Exceptions);
3022             File_Name := Canonical_Case_File_Name (Element.Value.Value);
3023
3024             Get_Name_String (Element.Index);
3025             To_Lower (Name_Buffer (1 .. Name_Len));
3026             Unit  := Name_Find;
3027             Index := Element.Value.Index;
3028
3029             --  For Ada, check if it is a valid unit name
3030
3031             if Lang = Name_Ada then
3032                Get_Name_String (Element.Index);
3033                Check_Ada_Name (Name_Buffer (1 .. Name_Len), Unit);
3034
3035                if Unit = No_Name then
3036                   Err_Vars.Error_Msg_Name_1 := Element.Index;
3037                   Error_Msg
3038                     (Data.Flags,
3039                      "%% is not a valid unit name.",
3040                      Element.Value.Location, Project);
3041                end if;
3042             end if;
3043
3044             if Unit /= No_Name then
3045                Add_Source
3046                  (Id               => Source,
3047                   Data             => Data,
3048                   Project          => Project,
3049                   Source_Dir_Rank  => 0,
3050                   Lang_Id          => Lang_Id,
3051                   Kind             => Kind,
3052                   File_Name        => File_Name,
3053                   Display_File     => File_Name_Type (Element.Value.Value),
3054                   Unit             => Unit,
3055                   Index            => Index,
3056                   Location         => Element.Value.Location,
3057                   Naming_Exception => True);
3058             end if;
3059
3060             Exceptions := Element.Next;
3061          end loop;
3062       end Process_Exceptions_Unit_Based;
3063
3064       ------------------
3065       -- Check_Naming --
3066       ------------------
3067
3068       procedure Check_Naming is
3069          Dot_Replacement : File_Name_Type :=
3070                              File_Name_Type
3071                                (First_Name_Id + Character'Pos ('-'));
3072          Separate_Suffix : File_Name_Type := No_File;
3073          Casing          : Casing_Type    := All_Lower_Case;
3074          Casing_Defined  : Boolean;
3075          Lang_Id         : Language_Ptr;
3076          Sep_Suffix_Loc  : Source_Ptr;
3077          Suffix          : Variable_Value;
3078          Lang            : Name_Id;
3079
3080       begin
3081          Check_Common
3082            (Dot_Replacement => Dot_Replacement,
3083             Casing          => Casing,
3084             Casing_Defined  => Casing_Defined,
3085             Separate_Suffix => Separate_Suffix,
3086             Sep_Suffix_Loc  => Sep_Suffix_Loc);
3087
3088          --  For all unit based languages, if any, set the specified value
3089          --  of Dot_Replacement, Casing and/or Separate_Suffix. Do not
3090          --  systematically overwrite, since the defaults come from the
3091          --  configuration file.
3092
3093          if Dot_Replacement /= No_File
3094            or else Casing_Defined
3095            or else Separate_Suffix /= No_File
3096          then
3097             Lang_Id := Project.Languages;
3098             while Lang_Id /= No_Language_Index loop
3099                if Lang_Id.Config.Kind = Unit_Based then
3100                   if Dot_Replacement /= No_File then
3101                      Lang_Id.Config.Naming_Data.Dot_Replacement :=
3102                          Dot_Replacement;
3103                   end if;
3104
3105                   if Casing_Defined then
3106                      Lang_Id.Config.Naming_Data.Casing := Casing;
3107                   end if;
3108                end if;
3109
3110                Lang_Id := Lang_Id.Next;
3111             end loop;
3112          end if;
3113
3114          --  Next, get the spec and body suffixes
3115
3116          Lang_Id := Project.Languages;
3117          while Lang_Id /= No_Language_Index loop
3118             Lang := Lang_Id.Name;
3119
3120             --  Spec_Suffix
3121
3122             Suffix := Value_Of
3123               (Name                    => Lang,
3124                Attribute_Or_Array_Name => Name_Spec_Suffix,
3125                In_Package              => Naming_Id,
3126                In_Tree                 => Data.Tree);
3127
3128             if Suffix = Nil_Variable_Value then
3129                Suffix := Value_Of
3130                  (Name                    => Lang,
3131                   Attribute_Or_Array_Name => Name_Specification_Suffix,
3132                   In_Package              => Naming_Id,
3133                   In_Tree                 => Data.Tree);
3134             end if;
3135
3136             if Suffix /= Nil_Variable_Value then
3137                Lang_Id.Config.Naming_Data.Spec_Suffix :=
3138                    File_Name_Type (Suffix.Value);
3139
3140                Check_Illegal_Suffix
3141                  (Project,
3142                   Lang_Id.Config.Naming_Data.Spec_Suffix,
3143                   Lang_Id.Config.Naming_Data.Dot_Replacement,
3144                   "Spec_Suffix", Suffix.Location, Data);
3145
3146                Write_Attr
3147                  ("Spec_Suffix",
3148                   Get_Name_String (Lang_Id.Config.Naming_Data.Spec_Suffix));
3149             end if;
3150
3151             --  Body_Suffix
3152
3153             Suffix :=
3154               Value_Of
3155                 (Name                    => Lang,
3156                  Attribute_Or_Array_Name => Name_Body_Suffix,
3157                  In_Package              => Naming_Id,
3158                  In_Tree                 => Data.Tree);
3159
3160             if Suffix = Nil_Variable_Value then
3161                Suffix :=
3162                  Value_Of
3163                    (Name                    => Lang,
3164                     Attribute_Or_Array_Name => Name_Implementation_Suffix,
3165                     In_Package              => Naming_Id,
3166                     In_Tree                 => Data.Tree);
3167             end if;
3168
3169             if Suffix /= Nil_Variable_Value then
3170                Lang_Id.Config.Naming_Data.Body_Suffix :=
3171                  File_Name_Type (Suffix.Value);
3172
3173                --  The default value of separate suffix should be the same as
3174                --  the body suffix, so we need to compute that first.
3175
3176                if Separate_Suffix = No_File then
3177                   Lang_Id.Config.Naming_Data.Separate_Suffix :=
3178                     Lang_Id.Config.Naming_Data.Body_Suffix;
3179                   Write_Attr
3180                     ("Sep_Suffix",
3181                      Get_Name_String
3182                        (Lang_Id.Config.Naming_Data.Separate_Suffix));
3183                else
3184                   Lang_Id.Config.Naming_Data.Separate_Suffix :=
3185                     Separate_Suffix;
3186                end if;
3187
3188                Check_Illegal_Suffix
3189                  (Project,
3190                   Lang_Id.Config.Naming_Data.Body_Suffix,
3191                   Lang_Id.Config.Naming_Data.Dot_Replacement,
3192                   "Body_Suffix", Suffix.Location, Data);
3193
3194                Write_Attr
3195                  ("Body_Suffix",
3196                   Get_Name_String (Lang_Id.Config.Naming_Data.Body_Suffix));
3197
3198             elsif Separate_Suffix /= No_File then
3199                Lang_Id.Config.Naming_Data.Separate_Suffix := Separate_Suffix;
3200             end if;
3201
3202             --  Spec_Suffix cannot be equal to Body_Suffix or Separate_Suffix,
3203             --  since that would cause a clear ambiguity. Note that we do allow
3204             --  a Spec_Suffix to have the same termination as one of these,
3205             --  which causes a potential ambiguity, but we resolve that my
3206             --  matching the longest possible suffix.
3207
3208             if Lang_Id.Config.Naming_Data.Spec_Suffix /= No_File
3209               and then Lang_Id.Config.Naming_Data.Spec_Suffix =
3210                        Lang_Id.Config.Naming_Data.Body_Suffix
3211             then
3212                Error_Msg
3213                  (Data.Flags,
3214                   "Body_Suffix ("""
3215                   & Get_Name_String (Lang_Id.Config.Naming_Data.Body_Suffix)
3216                   & """) cannot be the same as Spec_Suffix.",
3217                   Ada_Body_Suffix_Loc, Project);
3218             end if;
3219
3220             if Lang_Id.Config.Naming_Data.Body_Suffix /=
3221                Lang_Id.Config.Naming_Data.Separate_Suffix
3222               and then Lang_Id.Config.Naming_Data.Spec_Suffix =
3223                        Lang_Id.Config.Naming_Data.Separate_Suffix
3224             then
3225                Error_Msg
3226                  (Data.Flags,
3227                   "Separate_Suffix ("""
3228                   & Get_Name_String
3229                     (Lang_Id.Config.Naming_Data.Separate_Suffix)
3230                   & """) cannot be the same as Spec_Suffix.",
3231                   Sep_Suffix_Loc, Project);
3232             end if;
3233
3234             Lang_Id := Lang_Id.Next;
3235          end loop;
3236
3237          --  Get the naming exceptions for all languages
3238
3239          for Kind in Spec .. Impl loop
3240             Lang_Id := Project.Languages;
3241             while Lang_Id /= No_Language_Index loop
3242                case Lang_Id.Config.Kind is
3243                   when File_Based =>
3244                      Process_Exceptions_File_Based (Lang_Id, Kind);
3245
3246                   when Unit_Based =>
3247                      Process_Exceptions_Unit_Based (Lang_Id, Kind);
3248                end case;
3249
3250                Lang_Id := Lang_Id.Next;
3251             end loop;
3252          end loop;
3253       end Check_Naming;
3254
3255       ----------------------------
3256       -- Initialize_Naming_Data --
3257       ----------------------------
3258
3259       procedure Initialize_Naming_Data is
3260          Specs : Array_Element_Id :=
3261                    Util.Value_Of
3262                      (Name_Spec_Suffix,
3263                       Naming.Decl.Arrays,
3264                       Data.Tree);
3265
3266          Impls : Array_Element_Id :=
3267                    Util.Value_Of
3268                      (Name_Body_Suffix,
3269                       Naming.Decl.Arrays,
3270                       Data.Tree);
3271
3272          Lang      : Language_Ptr;
3273          Lang_Name : Name_Id;
3274          Value     : Variable_Value;
3275          Extended  : Project_Id;
3276
3277       begin
3278          --  At this stage, the project already contains the default extensions
3279          --  for the various languages. We now merge those suffixes read in the
3280          --  user project, and they override the default.
3281
3282          while Specs /= No_Array_Element loop
3283             Lang_Name := Data.Tree.Array_Elements.Table (Specs).Index;
3284             Lang :=
3285               Get_Language_From_Name
3286                 (Project, Name => Get_Name_String (Lang_Name));
3287
3288             --  An extending project inherits its parent projects' languages
3289             --  so if needed we should create entries for those languages
3290
3291             if Lang = null  then
3292                Extended := Project.Extends;
3293                while Extended /= null loop
3294                   Lang := Get_Language_From_Name
3295                     (Extended, Name => Get_Name_String (Lang_Name));
3296                   exit when Lang /= null;
3297
3298                   Extended := Extended.Extends;
3299                end loop;
3300
3301                if Lang /= null then
3302                   Lang := new Language_Data'(Lang.all);
3303                   Lang.First_Source := null;
3304                   Lang.Next := Project.Languages;
3305                   Project.Languages := Lang;
3306                end if;
3307             end if;
3308
3309             --  If language was not found in project or the projects it extends
3310
3311             if Lang = null then
3312                if Current_Verbosity = High then
3313                   Write_Line
3314                     ("Ignoring spec naming data for "
3315                      & Get_Name_String (Lang_Name)
3316                      & " since language is not defined for this project");
3317                end if;
3318
3319             else
3320                Value := Data.Tree.Array_Elements.Table (Specs).Value;
3321
3322                if Value.Kind = Single then
3323                   Lang.Config.Naming_Data.Spec_Suffix :=
3324                     Canonical_Case_File_Name (Value.Value);
3325                end if;
3326             end if;
3327
3328             Specs := Data.Tree.Array_Elements.Table (Specs).Next;
3329          end loop;
3330
3331          while Impls /= No_Array_Element loop
3332             Lang_Name := Data.Tree.Array_Elements.Table (Impls).Index;
3333             Lang :=
3334               Get_Language_From_Name
3335                 (Project, Name => Get_Name_String (Lang_Name));
3336
3337             if Lang = null then
3338                if Current_Verbosity = High then
3339                   Write_Line
3340                     ("Ignoring impl naming data for "
3341                      & Get_Name_String (Lang_Name)
3342                      & " since language is not defined for this project");
3343                end if;
3344             else
3345                Value := Data.Tree.Array_Elements.Table (Impls).Value;
3346
3347                if Lang.Name = Name_Ada then
3348                   Ada_Body_Suffix_Loc := Value.Location;
3349                end if;
3350
3351                if Value.Kind = Single then
3352                   Lang.Config.Naming_Data.Body_Suffix :=
3353                     Canonical_Case_File_Name (Value.Value);
3354                end if;
3355             end if;
3356
3357             Impls := Data.Tree.Array_Elements.Table (Impls).Next;
3358          end loop;
3359       end Initialize_Naming_Data;
3360
3361    --  Start of processing for Check_Naming_Schemes
3362
3363    begin
3364       Specs  := No_Array_Element;
3365       Bodies := No_Array_Element;
3366
3367       --  No Naming package or parsing a configuration file? nothing to do
3368
3369       if Naming_Id /= No_Package
3370         and then Project.Qualifier /= Configuration
3371       then
3372          Naming := Data.Tree.Packages.Table (Naming_Id);
3373
3374          if Current_Verbosity = High then
3375             Write_Line ("Checking package Naming for project "
3376                         & Get_Name_String (Project.Name));
3377          end if;
3378
3379          Initialize_Naming_Data;
3380          Check_Naming;
3381       end if;
3382    end Check_Package_Naming;
3383
3384    ------------------------------
3385    -- Check_Library_Attributes --
3386    ------------------------------
3387
3388    procedure Check_Library_Attributes
3389      (Project : Project_Id;
3390       Data    : in out Tree_Processing_Data)
3391    is
3392       Attributes   : constant Prj.Variable_Id := Project.Decl.Attributes;
3393
3394       Lib_Dir      : constant Prj.Variable_Value :=
3395                        Prj.Util.Value_Of
3396                          (Snames.Name_Library_Dir, Attributes, Data.Tree);
3397
3398       Lib_Name     : constant Prj.Variable_Value :=
3399                        Prj.Util.Value_Of
3400                          (Snames.Name_Library_Name, Attributes, Data.Tree);
3401
3402       Lib_Version  : constant Prj.Variable_Value :=
3403                        Prj.Util.Value_Of
3404                          (Snames.Name_Library_Version, Attributes, Data.Tree);
3405
3406       Lib_ALI_Dir  : constant Prj.Variable_Value :=
3407                        Prj.Util.Value_Of
3408                          (Snames.Name_Library_Ali_Dir, Attributes, Data.Tree);
3409
3410       Lib_GCC      : constant Prj.Variable_Value :=
3411                        Prj.Util.Value_Of
3412                          (Snames.Name_Library_GCC, Attributes, Data.Tree);
3413
3414       The_Lib_Kind : constant Prj.Variable_Value :=
3415                        Prj.Util.Value_Of
3416                          (Snames.Name_Library_Kind, Attributes, Data.Tree);
3417
3418       Imported_Project_List : Project_List;
3419
3420       Continuation : String_Access := No_Continuation_String'Access;
3421
3422       Support_For_Libraries : Library_Support;
3423
3424       Library_Directory_Present : Boolean;
3425
3426       procedure Check_Library (Proj : Project_Id; Extends : Boolean);
3427       --  Check if an imported or extended project if also a library project
3428
3429       -------------------
3430       -- Check_Library --
3431       -------------------
3432
3433       procedure Check_Library (Proj : Project_Id; Extends : Boolean) is
3434          Src_Id : Source_Id;
3435          Iter   : Source_Iterator;
3436
3437       begin
3438          if Proj /= No_Project then
3439             if not Proj.Library then
3440
3441                --  The only not library projects that are OK are those that
3442                --  have no sources. However, header files from non-Ada
3443                --  languages are OK, as there is nothing to compile.
3444
3445                Iter := For_Each_Source (Data.Tree, Proj);
3446                loop
3447                   Src_Id := Prj.Element (Iter);
3448                   exit when Src_Id = No_Source
3449                     or else Src_Id.Language.Config.Kind /= File_Based
3450                     or else Src_Id.Kind /= Spec;
3451                   Next (Iter);
3452                end loop;
3453
3454                if Src_Id /= No_Source then
3455                   Error_Msg_Name_1 := Project.Name;
3456                   Error_Msg_Name_2 := Proj.Name;
3457
3458                   if Extends then
3459                      if Project.Library_Kind /= Static then
3460                         Error_Msg
3461                           (Data.Flags,
3462                            Continuation.all &
3463                            "shared library project %% cannot extend " &
3464                            "project %% that is not a library project",
3465                            Project.Location, Project);
3466                         Continuation := Continuation_String'Access;
3467                      end if;
3468
3469                   elsif (not Unchecked_Shared_Lib_Imports)
3470                         and then Project.Library_Kind /= Static
3471                   then
3472                      Error_Msg
3473                        (Data.Flags,
3474                         Continuation.all &
3475                         "shared library project %% cannot import project %% " &
3476                         "that is not a shared library project",
3477                         Project.Location, Project);
3478                      Continuation := Continuation_String'Access;
3479                   end if;
3480                end if;
3481
3482             elsif Project.Library_Kind /= Static and then
3483                   Proj.Library_Kind = Static
3484             then
3485                Error_Msg_Name_1 := Project.Name;
3486                Error_Msg_Name_2 := Proj.Name;
3487
3488                if Extends then
3489                   Error_Msg
3490                     (Data.Flags,
3491                      Continuation.all &
3492                      "shared library project %% cannot extend static " &
3493                      "library project %%",
3494                      Project.Location, Project);
3495                   Continuation := Continuation_String'Access;
3496
3497                elsif not Unchecked_Shared_Lib_Imports then
3498                   Error_Msg
3499                     (Data.Flags,
3500                      Continuation.all &
3501                      "shared library project %% cannot import static " &
3502                      "library project %%",
3503                      Project.Location, Project);
3504                   Continuation := Continuation_String'Access;
3505                end if;
3506
3507             end if;
3508          end if;
3509       end Check_Library;
3510
3511       Dir_Exists : Boolean;
3512
3513    --  Start of processing for Check_Library_Attributes
3514
3515    begin
3516       Library_Directory_Present := Lib_Dir.Value /= Empty_String;
3517
3518       --  Special case of extending project
3519
3520       if Project.Extends /= No_Project then
3521
3522          --  If the project extended is a library project, we inherit the
3523          --  library name, if it is not redefined; we check that the library
3524          --  directory is specified.
3525
3526          if Project.Extends.Library then
3527             if Project.Qualifier = Standard then
3528                Error_Msg
3529                  (Data.Flags,
3530                   "a standard project cannot extend a library project",
3531                   Project.Location, Project);
3532
3533             else
3534                if Lib_Name.Default then
3535                   Project.Library_Name := Project.Extends.Library_Name;
3536                end if;
3537
3538                if Lib_Dir.Default then
3539                   if not Project.Virtual then
3540                      Error_Msg
3541                        (Data.Flags,
3542                         "a project extending a library project must " &
3543                         "specify an attribute Library_Dir",
3544                         Project.Location, Project);
3545
3546                   else
3547                      --  For a virtual project extending a library project,
3548                      --  inherit library directory.
3549
3550                      Project.Library_Dir := Project.Extends.Library_Dir;
3551                      Library_Directory_Present := True;
3552                   end if;
3553                end if;
3554             end if;
3555          end if;
3556       end if;
3557
3558       pragma Assert (Lib_Name.Kind = Single);
3559
3560       if Lib_Name.Value = Empty_String then
3561          if Current_Verbosity = High
3562            and then Project.Library_Name = No_Name
3563          then
3564             Write_Line ("No library name");
3565          end if;
3566
3567       else
3568          --  There is no restriction on the syntax of library names
3569
3570          Project.Library_Name := Lib_Name.Value;
3571       end if;
3572
3573       if Project.Library_Name /= No_Name then
3574          if Current_Verbosity = High then
3575             Write_Attr
3576               ("Library name", Get_Name_String (Project.Library_Name));
3577          end if;
3578
3579          pragma Assert (Lib_Dir.Kind = Single);
3580
3581          if not Library_Directory_Present then
3582             if Current_Verbosity = High then
3583                Write_Line ("No library directory");
3584             end if;
3585
3586          else
3587             --  Find path name (unless inherited), check that it is a directory
3588
3589             if Project.Library_Dir = No_Path_Information then
3590                Locate_Directory
3591                  (Project,
3592                   File_Name_Type (Lib_Dir.Value),
3593                   Path             => Project.Library_Dir,
3594                   Dir_Exists       => Dir_Exists,
3595                   Data             => Data,
3596                   Create           => "library",
3597                   Must_Exist       => False,
3598                   Location         => Lib_Dir.Location,
3599                   Externally_Built => Project.Externally_Built);
3600
3601             else
3602                Dir_Exists :=
3603                  Is_Directory
3604                    (Get_Name_String
3605                         (Project.Library_Dir.Display_Name));
3606             end if;
3607
3608             if not Dir_Exists then
3609
3610                --  Get the absolute name of the library directory that
3611                --  does not exist, to report an error.
3612
3613                Err_Vars.Error_Msg_File_1 :=
3614                  File_Name_Type (Project.Library_Dir.Display_Name);
3615                Error_Msg
3616                  (Data.Flags,
3617                   "library directory { does not exist",
3618                   Lib_Dir.Location, Project);
3619
3620                --  The library directory cannot be the same as the Object
3621                --  directory.
3622
3623             elsif Project.Library_Dir.Name = Project.Object_Directory.Name then
3624                Error_Msg
3625                  (Data.Flags,
3626                   "library directory cannot be the same " &
3627                   "as object directory",
3628                   Lib_Dir.Location, Project);
3629                Project.Library_Dir := No_Path_Information;
3630
3631             else
3632                declare
3633                   OK       : Boolean := True;
3634                   Dirs_Id  : String_List_Id;
3635                   Dir_Elem : String_Element;
3636                   Pid      : Project_List;
3637
3638                begin
3639                   --  The library directory cannot be the same as a source
3640                   --  directory of the current project.
3641
3642                   Dirs_Id := Project.Source_Dirs;
3643                   while Dirs_Id /= Nil_String loop
3644                      Dir_Elem := Data.Tree.String_Elements.Table (Dirs_Id);
3645                      Dirs_Id  := Dir_Elem.Next;
3646
3647                      if Project.Library_Dir.Name =
3648                        Path_Name_Type (Dir_Elem.Value)
3649                      then
3650                         Err_Vars.Error_Msg_File_1 :=
3651                           File_Name_Type (Dir_Elem.Value);
3652                         Error_Msg
3653                           (Data.Flags,
3654                            "library directory cannot be the same " &
3655                            "as source directory {",
3656                            Lib_Dir.Location, Project);
3657                         OK := False;
3658                         exit;
3659                      end if;
3660                   end loop;
3661
3662                   if OK then
3663
3664                      --  The library directory cannot be the same as a source
3665                      --  directory of another project either.
3666
3667                      Pid := Data.Tree.Projects;
3668                      Project_Loop : loop
3669                         exit Project_Loop when Pid = null;
3670
3671                         if Pid.Project /= Project then
3672                            Dirs_Id := Pid.Project.Source_Dirs;
3673
3674                            Dir_Loop : while Dirs_Id /= Nil_String loop
3675                               Dir_Elem :=
3676                                 Data.Tree.String_Elements.Table (Dirs_Id);
3677                               Dirs_Id  := Dir_Elem.Next;
3678
3679                               if Project.Library_Dir.Name =
3680                                 Path_Name_Type (Dir_Elem.Value)
3681                               then
3682                                  Err_Vars.Error_Msg_File_1 :=
3683                                    File_Name_Type (Dir_Elem.Value);
3684                                  Err_Vars.Error_Msg_Name_1 := Pid.Project.Name;
3685
3686                                  Error_Msg
3687                                    (Data.Flags,
3688                                     "library directory cannot be the same " &
3689                                     "as source directory { of project %%",
3690                                     Lib_Dir.Location, Project);
3691                                  OK := False;
3692                                  exit Project_Loop;
3693                               end if;
3694                            end loop Dir_Loop;
3695                         end if;
3696
3697                         Pid := Pid.Next;
3698                      end loop Project_Loop;
3699                   end if;
3700
3701                   if not OK then
3702                      Project.Library_Dir := No_Path_Information;
3703
3704                   elsif Current_Verbosity = High then
3705
3706                      --  Display the Library directory in high verbosity
3707
3708                      Write_Attr
3709                        ("Library directory",
3710                         Get_Name_String (Project.Library_Dir.Display_Name));
3711                   end if;
3712                end;
3713             end if;
3714          end if;
3715
3716       end if;
3717
3718       Project.Library :=
3719         Project.Library_Dir /= No_Path_Information
3720           and then Project.Library_Name /= No_Name;
3721
3722       if Project.Extends = No_Project then
3723          case Project.Qualifier is
3724             when Standard =>
3725                if Project.Library then
3726                   Error_Msg
3727                     (Data.Flags,
3728                      "a standard project cannot be a library project",
3729                      Lib_Name.Location, Project);
3730                end if;
3731
3732             when Library =>
3733                if not Project.Library then
3734                   if Project.Library_Dir = No_Path_Information then
3735                      Error_Msg
3736                        (Data.Flags,
3737                         "\attribute Library_Dir not declared",
3738                         Project.Location, Project);
3739                   end if;
3740
3741                   if Project.Library_Name = No_Name then
3742                      Error_Msg
3743                        (Data.Flags,
3744                         "\attribute Library_Name not declared",
3745                         Project.Location, Project);
3746                   end if;
3747                end if;
3748
3749             when others =>
3750                null;
3751
3752          end case;
3753       end if;
3754
3755       if Project.Library then
3756          Support_For_Libraries := Project.Config.Lib_Support;
3757
3758          if Support_For_Libraries = Prj.None then
3759             Error_Msg
3760               (Data.Flags,
3761                "?libraries are not supported on this platform",
3762                Lib_Name.Location, Project);
3763             Project.Library := False;
3764
3765          else
3766             if Lib_ALI_Dir.Value = Empty_String then
3767                if Current_Verbosity = High then
3768                   Write_Line ("No library ALI directory specified");
3769                end if;
3770
3771                Project.Library_ALI_Dir := Project.Library_Dir;
3772
3773             else
3774                --  Find path name, check that it is a directory
3775
3776                Locate_Directory
3777                  (Project,
3778                   File_Name_Type (Lib_ALI_Dir.Value),
3779                   Path             => Project.Library_ALI_Dir,
3780                   Create           => "library ALI",
3781                   Dir_Exists       => Dir_Exists,
3782                   Data             => Data,
3783                   Must_Exist       => False,
3784                   Location         => Lib_ALI_Dir.Location,
3785                   Externally_Built => Project.Externally_Built);
3786
3787                if not Dir_Exists then
3788
3789                   --  Get the absolute name of the library ALI directory that
3790                   --  does not exist, to report an error.
3791
3792                   Err_Vars.Error_Msg_File_1 :=
3793                     File_Name_Type (Project.Library_ALI_Dir.Display_Name);
3794                   Error_Msg
3795                     (Data.Flags,
3796                      "library 'A'L'I directory { does not exist",
3797                      Lib_ALI_Dir.Location, Project);
3798                end if;
3799
3800                if Project.Library_ALI_Dir /= Project.Library_Dir then
3801
3802                   --  The library ALI directory cannot be the same as the
3803                   --  Object directory.
3804
3805                   if Project.Library_ALI_Dir = Project.Object_Directory then
3806                      Error_Msg
3807                        (Data.Flags,
3808                         "library 'A'L'I directory cannot be the same " &
3809                         "as object directory",
3810                         Lib_ALI_Dir.Location, Project);
3811                      Project.Library_ALI_Dir := No_Path_Information;
3812
3813                   else
3814                      declare
3815                         OK       : Boolean := True;
3816                         Dirs_Id  : String_List_Id;
3817                         Dir_Elem : String_Element;
3818                         Pid      : Project_List;
3819
3820                      begin
3821                         --  The library ALI directory cannot be the same as
3822                         --  a source directory of the current project.
3823
3824                         Dirs_Id := Project.Source_Dirs;
3825                         while Dirs_Id /= Nil_String loop
3826                            Dir_Elem :=
3827                              Data.Tree.String_Elements.Table (Dirs_Id);
3828                            Dirs_Id  := Dir_Elem.Next;
3829
3830                            if Project.Library_ALI_Dir.Name =
3831                              Path_Name_Type (Dir_Elem.Value)
3832                            then
3833                               Err_Vars.Error_Msg_File_1 :=
3834                                 File_Name_Type (Dir_Elem.Value);
3835                               Error_Msg
3836                                 (Data.Flags,
3837                                  "library 'A'L'I directory cannot be " &
3838                                  "the same as source directory {",
3839                                  Lib_ALI_Dir.Location, Project);
3840                               OK := False;
3841                               exit;
3842                            end if;
3843                         end loop;
3844
3845                         if OK then
3846
3847                            --  The library ALI directory cannot be the same as
3848                            --  a source directory of another project either.
3849
3850                            Pid := Data.Tree.Projects;
3851                            ALI_Project_Loop : loop
3852                               exit ALI_Project_Loop when Pid = null;
3853
3854                               if Pid.Project /= Project then
3855                                  Dirs_Id := Pid.Project.Source_Dirs;
3856
3857                                  ALI_Dir_Loop :
3858                                  while Dirs_Id /= Nil_String loop
3859                                     Dir_Elem :=
3860                                       Data.Tree.String_Elements.Table
3861                                         (Dirs_Id);
3862                                     Dirs_Id  := Dir_Elem.Next;
3863
3864                                     if Project.Library_ALI_Dir.Name =
3865                                         Path_Name_Type (Dir_Elem.Value)
3866                                     then
3867                                        Err_Vars.Error_Msg_File_1 :=
3868                                          File_Name_Type (Dir_Elem.Value);
3869                                        Err_Vars.Error_Msg_Name_1 :=
3870                                          Pid.Project.Name;
3871
3872                                        Error_Msg
3873                                          (Data.Flags,
3874                                           "library 'A'L'I directory cannot " &
3875                                           "be the same as source directory " &
3876                                           "{ of project %%",
3877                                           Lib_ALI_Dir.Location, Project);
3878                                        OK := False;
3879                                        exit ALI_Project_Loop;
3880                                     end if;
3881                                  end loop ALI_Dir_Loop;
3882                               end if;
3883                               Pid := Pid.Next;
3884                            end loop ALI_Project_Loop;
3885                         end if;
3886
3887                         if not OK then
3888                            Project.Library_ALI_Dir := No_Path_Information;
3889
3890                         elsif Current_Verbosity = High then
3891
3892                            --  Display Library ALI directory in high verbosity
3893
3894                            Write_Attr
3895                              ("Library ALI dir",
3896                               Get_Name_String
3897                                 (Project.Library_ALI_Dir.Display_Name));
3898                         end if;
3899                      end;
3900                   end if;
3901                end if;
3902             end if;
3903
3904             pragma Assert (Lib_Version.Kind = Single);
3905
3906             if Lib_Version.Value = Empty_String then
3907                if Current_Verbosity = High then
3908                   Write_Line ("No library version specified");
3909                end if;
3910
3911             else
3912                Project.Lib_Internal_Name := Lib_Version.Value;
3913             end if;
3914
3915             pragma Assert (The_Lib_Kind.Kind = Single);
3916
3917             if The_Lib_Kind.Value = Empty_String then
3918                if Current_Verbosity = High then
3919                   Write_Line ("No library kind specified");
3920                end if;
3921
3922             else
3923                Get_Name_String (The_Lib_Kind.Value);
3924
3925                declare
3926                   Kind_Name : constant String :=
3927                                 To_Lower (Name_Buffer (1 .. Name_Len));
3928
3929                   OK : Boolean := True;
3930
3931                begin
3932                   if Kind_Name = "static" then
3933                      Project.Library_Kind := Static;
3934
3935                   elsif Kind_Name = "dynamic" then
3936                      Project.Library_Kind := Dynamic;
3937
3938                   elsif Kind_Name = "relocatable" then
3939                      Project.Library_Kind := Relocatable;
3940
3941                   else
3942                      Error_Msg
3943                        (Data.Flags,
3944                         "illegal value for Library_Kind",
3945                         The_Lib_Kind.Location, Project);
3946                      OK := False;
3947                   end if;
3948
3949                   if Current_Verbosity = High and then OK then
3950                      Write_Attr ("Library kind", Kind_Name);
3951                   end if;
3952
3953                   if Project.Library_Kind /= Static then
3954                      if Support_For_Libraries = Prj.Static_Only then
3955                         Error_Msg
3956                           (Data.Flags,
3957                            "only static libraries are supported " &
3958                            "on this platform",
3959                            The_Lib_Kind.Location, Project);
3960                         Project.Library := False;
3961
3962                      else
3963                         --  Check if (obsolescent) attribute Library_GCC or
3964                         --  Linker'Driver is declared.
3965
3966                         if Lib_GCC.Value /= Empty_String then
3967                            Error_Msg
3968                              (Data.Flags,
3969                               "?Library_'G'C'C is an obsolescent attribute, " &
3970                               "use Linker''Driver instead",
3971                               Lib_GCC.Location, Project);
3972                            Project.Config.Shared_Lib_Driver :=
3973                              File_Name_Type (Lib_GCC.Value);
3974
3975                         else
3976                            declare
3977                               Linker : constant Package_Id :=
3978                                          Value_Of
3979                                            (Name_Linker,
3980                                             Project.Decl.Packages,
3981                                             Data.Tree);
3982                               Driver : constant Variable_Value :=
3983                                          Value_Of
3984                                            (Name                 => No_Name,
3985                                             Attribute_Or_Array_Name =>
3986                                               Name_Driver,
3987                                             In_Package           => Linker,
3988                                             In_Tree              => Data.Tree);
3989
3990                            begin
3991                               if Driver /= Nil_Variable_Value
3992                                  and then Driver.Value /= Empty_String
3993                               then
3994                                  Project.Config.Shared_Lib_Driver :=
3995                                    File_Name_Type (Driver.Value);
3996                               end if;
3997                            end;
3998                         end if;
3999                      end if;
4000                   end if;
4001                end;
4002             end if;
4003
4004             if Project.Library then
4005                if Current_Verbosity = High then
4006                   Write_Line ("This is a library project file");
4007                end if;
4008
4009                Check_Library (Project.Extends, Extends => True);
4010
4011                Imported_Project_List := Project.Imported_Projects;
4012                while Imported_Project_List /= null loop
4013                   Check_Library
4014                     (Imported_Project_List.Project,
4015                      Extends => False);
4016                   Imported_Project_List := Imported_Project_List.Next;
4017                end loop;
4018             end if;
4019
4020          end if;
4021       end if;
4022
4023       --  Check if Linker'Switches or Linker'Default_Switches are declared.
4024       --  Warn if they are declared, as it is a common error to think that
4025       --  library are "linked" with Linker switches.
4026
4027       if Project.Library then
4028          declare
4029             Linker_Package_Id : constant Package_Id :=
4030                                   Util.Value_Of
4031                                     (Name_Linker,
4032                                      Project.Decl.Packages, Data.Tree);
4033             Linker_Package    : Package_Element;
4034             Switches          : Array_Element_Id := No_Array_Element;
4035
4036          begin
4037             if Linker_Package_Id /= No_Package then
4038                Linker_Package := Data.Tree.Packages.Table (Linker_Package_Id);
4039
4040                Switches :=
4041                  Value_Of
4042                    (Name      => Name_Switches,
4043                     In_Arrays => Linker_Package.Decl.Arrays,
4044                     In_Tree   => Data.Tree);
4045
4046                if Switches = No_Array_Element then
4047                   Switches :=
4048                     Value_Of
4049                       (Name      => Name_Default_Switches,
4050                        In_Arrays => Linker_Package.Decl.Arrays,
4051                        In_Tree   => Data.Tree);
4052                end if;
4053
4054                if Switches /= No_Array_Element then
4055                   Error_Msg
4056                     (Data.Flags,
4057                      "?Linker switches not taken into account in library " &
4058                      "projects",
4059                      No_Location, Project);
4060                end if;
4061             end if;
4062          end;
4063       end if;
4064
4065       if Project.Extends /= No_Project then
4066          Project.Extends.Library := False;
4067       end if;
4068    end Check_Library_Attributes;
4069
4070    ---------------------------------
4071    -- Check_Programming_Languages --
4072    ---------------------------------
4073
4074    procedure Check_Programming_Languages
4075      (Project : Project_Id;
4076       Data    : in out Tree_Processing_Data)
4077    is
4078       Languages   : Variable_Value := Nil_Variable_Value;
4079       Def_Lang    : Variable_Value := Nil_Variable_Value;
4080       Def_Lang_Id : Name_Id;
4081
4082       procedure Add_Language (Name, Display_Name : Name_Id);
4083       --  Add a new language to the list of languages for the project.
4084       --  Nothing is done if the language has already been defined
4085
4086       ------------------
4087       -- Add_Language --
4088       ------------------
4089
4090       procedure Add_Language (Name, Display_Name : Name_Id) is
4091          Lang : Language_Ptr;
4092
4093       begin
4094          Lang := Project.Languages;
4095          while Lang /= No_Language_Index loop
4096             if Name = Lang.Name then
4097                return;
4098             end if;
4099
4100             Lang := Lang.Next;
4101          end loop;
4102
4103          Lang              := new Language_Data'(No_Language_Data);
4104          Lang.Next         := Project.Languages;
4105          Project.Languages := Lang;
4106          Lang.Name         := Name;
4107          Lang.Display_Name := Display_Name;
4108
4109          if Name = Name_Ada then
4110             Lang.Config.Kind            := Unit_Based;
4111             Lang.Config.Dependency_Kind := ALI_File;
4112          else
4113             Lang.Config.Kind := File_Based;
4114          end if;
4115       end Add_Language;
4116
4117    --  Start of processing for Check_Programming_Languages
4118
4119    begin
4120       Project.Languages := null;
4121       Languages :=
4122         Prj.Util.Value_Of (Name_Languages, Project.Decl.Attributes, Data.Tree);
4123       Def_Lang :=
4124         Prj.Util.Value_Of
4125           (Name_Default_Language, Project.Decl.Attributes, Data.Tree);
4126
4127       if Project.Source_Dirs /= Nil_String then
4128
4129          --  Check if languages are specified in this project
4130
4131          if Languages.Default then
4132
4133             --  Fail if there is no default language defined
4134
4135             if Def_Lang.Default then
4136                Error_Msg
4137                  (Data.Flags,
4138                   "no languages defined for this project",
4139                   Project.Location, Project);
4140                Def_Lang_Id := No_Name;
4141
4142             else
4143                Get_Name_String (Def_Lang.Value);
4144                To_Lower (Name_Buffer (1 .. Name_Len));
4145                Def_Lang_Id := Name_Find;
4146             end if;
4147
4148             if Def_Lang_Id /= No_Name then
4149                Get_Name_String (Def_Lang_Id);
4150                Name_Buffer (1) := GNAT.Case_Util.To_Upper (Name_Buffer (1));
4151                Add_Language
4152                  (Name         => Def_Lang_Id,
4153                   Display_Name => Name_Find);
4154             end if;
4155
4156          else
4157             declare
4158                Current : String_List_Id := Languages.Values;
4159                Element : String_Element;
4160
4161             begin
4162                --  If there are no languages declared, there are no sources
4163
4164                if Current = Nil_String then
4165                   Project.Source_Dirs := Nil_String;
4166
4167                   if Project.Qualifier = Standard then
4168                      Error_Msg
4169                        (Data.Flags,
4170                         "a standard project must have at least one language",
4171                         Languages.Location, Project);
4172                   end if;
4173
4174                else
4175                   --  Look through all the languages specified in attribute
4176                   --  Languages.
4177
4178                   while Current /= Nil_String loop
4179                      Element := Data.Tree.String_Elements.Table (Current);
4180                      Get_Name_String (Element.Value);
4181                      To_Lower (Name_Buffer (1 .. Name_Len));
4182
4183                      Add_Language
4184                        (Name         => Name_Find,
4185                         Display_Name => Element.Value);
4186
4187                      Current := Element.Next;
4188                   end loop;
4189                end if;
4190             end;
4191          end if;
4192       end if;
4193    end Check_Programming_Languages;
4194
4195    -------------------------------
4196    -- Check_Stand_Alone_Library --
4197    -------------------------------
4198
4199    procedure Check_Stand_Alone_Library
4200      (Project : Project_Id;
4201       Data    : in out Tree_Processing_Data)
4202    is
4203       Lib_Interfaces      : constant Prj.Variable_Value :=
4204                               Prj.Util.Value_Of
4205                                 (Snames.Name_Library_Interface,
4206                                  Project.Decl.Attributes,
4207                                  Data.Tree);
4208
4209       Lib_Auto_Init       : constant Prj.Variable_Value :=
4210                               Prj.Util.Value_Of
4211                                 (Snames.Name_Library_Auto_Init,
4212                                  Project.Decl.Attributes,
4213                                  Data.Tree);
4214
4215       Lib_Src_Dir         : constant Prj.Variable_Value :=
4216                               Prj.Util.Value_Of
4217                                 (Snames.Name_Library_Src_Dir,
4218                                  Project.Decl.Attributes,
4219                                  Data.Tree);
4220
4221       Lib_Symbol_File     : constant Prj.Variable_Value :=
4222                               Prj.Util.Value_Of
4223                                 (Snames.Name_Library_Symbol_File,
4224                                  Project.Decl.Attributes,
4225                                  Data.Tree);
4226
4227       Lib_Symbol_Policy   : constant Prj.Variable_Value :=
4228                               Prj.Util.Value_Of
4229                                 (Snames.Name_Library_Symbol_Policy,
4230                                  Project.Decl.Attributes,
4231                                  Data.Tree);
4232
4233       Lib_Ref_Symbol_File : constant Prj.Variable_Value :=
4234                               Prj.Util.Value_Of
4235                                 (Snames.Name_Library_Reference_Symbol_File,
4236                                  Project.Decl.Attributes,
4237                                  Data.Tree);
4238
4239       Auto_Init_Supported : Boolean;
4240       OK                  : Boolean := True;
4241       Source              : Source_Id;
4242       Next_Proj           : Project_Id;
4243       Iter                : Source_Iterator;
4244
4245    begin
4246       Auto_Init_Supported := Project.Config.Auto_Init_Supported;
4247
4248       pragma Assert (Lib_Interfaces.Kind = List);
4249
4250       --  It is a stand-alone library project file if attribute
4251       --  Library_Interface is defined.
4252
4253       if not Lib_Interfaces.Default then
4254          declare
4255             Interfaces     : String_List_Id := Lib_Interfaces.Values;
4256             Interface_ALIs : String_List_Id := Nil_String;
4257             Unit           : Name_Id;
4258
4259          begin
4260             Project.Standalone_Library := True;
4261
4262             --  Library_Interface cannot be an empty list
4263
4264             if Interfaces = Nil_String then
4265                Error_Msg
4266                  (Data.Flags,
4267                   "Library_Interface cannot be an empty list",
4268                   Lib_Interfaces.Location, Project);
4269             end if;
4270
4271             --  Process each unit name specified in the attribute
4272             --  Library_Interface.
4273
4274             while Interfaces /= Nil_String loop
4275                Get_Name_String
4276                  (Data.Tree.String_Elements.Table (Interfaces).Value);
4277                To_Lower (Name_Buffer (1 .. Name_Len));
4278
4279                if Name_Len = 0 then
4280                   Error_Msg
4281                     (Data.Flags,
4282                      "an interface cannot be an empty string",
4283                      Data.Tree.String_Elements.Table (Interfaces).Location,
4284                      Project);
4285
4286                else
4287                   Unit := Name_Find;
4288                   Error_Msg_Name_1 := Unit;
4289
4290                   Next_Proj := Project.Extends;
4291                   Iter := For_Each_Source (Data.Tree, Project);
4292                   loop
4293                      while Prj.Element (Iter) /= No_Source
4294                        and then
4295                          (Prj.Element (Iter).Unit = null
4296                            or else Prj.Element (Iter).Unit.Name /= Unit)
4297                      loop
4298                         Next (Iter);
4299                      end loop;
4300
4301                      Source := Prj.Element (Iter);
4302                      exit when Source /= No_Source
4303                        or else Next_Proj = No_Project;
4304
4305                      Iter := For_Each_Source (Data.Tree, Next_Proj);
4306                      Next_Proj := Next_Proj.Extends;
4307                   end loop;
4308
4309                   if Source /= No_Source then
4310                      if Source.Kind = Sep then
4311                         Source := No_Source;
4312
4313                      elsif Source.Kind = Spec
4314                        and then Other_Part (Source) /= No_Source
4315                      then
4316                         Source := Other_Part (Source);
4317                      end if;
4318                   end if;
4319
4320                   if Source /= No_Source then
4321                      if Source.Project /= Project
4322                        and then not Is_Extending (Project, Source.Project)
4323                      then
4324                         Source := No_Source;
4325                      end if;
4326                   end if;
4327
4328                   if Source = No_Source then
4329                      Error_Msg
4330                        (Data.Flags,
4331                         "%% is not a unit of this project",
4332                         Data.Tree.String_Elements.Table
4333                           (Interfaces).Location, Project);
4334
4335                   else
4336                      if Source.Kind = Spec
4337                        and then Other_Part (Source) /= No_Source
4338                      then
4339                         Source := Other_Part (Source);
4340                      end if;
4341
4342                      String_Element_Table.Increment_Last
4343                        (Data.Tree.String_Elements);
4344
4345                      Data.Tree.String_Elements.Table
4346                        (String_Element_Table.Last
4347                           (Data.Tree.String_Elements)) :=
4348                        (Value         => Name_Id (Source.Dep_Name),
4349                         Index         => 0,
4350                         Display_Value => Name_Id (Source.Dep_Name),
4351                         Location      =>
4352                           Data.Tree.String_Elements.Table
4353                             (Interfaces).Location,
4354                         Flag          => False,
4355                         Next          => Interface_ALIs);
4356
4357                      Interface_ALIs :=
4358                        String_Element_Table.Last
4359                          (Data.Tree.String_Elements);
4360                   end if;
4361                end if;
4362
4363                Interfaces := Data.Tree.String_Elements.Table (Interfaces).Next;
4364             end loop;
4365
4366             --  Put the list of Interface ALIs in the project data
4367
4368             Project.Lib_Interface_ALIs := Interface_ALIs;
4369
4370             --  Check value of attribute Library_Auto_Init and set
4371             --  Lib_Auto_Init accordingly.
4372
4373             if Lib_Auto_Init.Default then
4374
4375                --  If no attribute Library_Auto_Init is declared, then set auto
4376                --  init only if it is supported.
4377
4378                Project.Lib_Auto_Init := Auto_Init_Supported;
4379
4380             else
4381                Get_Name_String (Lib_Auto_Init.Value);
4382                To_Lower (Name_Buffer (1 .. Name_Len));
4383
4384                if Name_Buffer (1 .. Name_Len) = "false" then
4385                   Project.Lib_Auto_Init := False;
4386
4387                elsif Name_Buffer (1 .. Name_Len) = "true" then
4388                   if Auto_Init_Supported then
4389                      Project.Lib_Auto_Init := True;
4390
4391                   else
4392                      --  Library_Auto_Init cannot be "true" if auto init is not
4393                      --  supported.
4394
4395                      Error_Msg
4396                        (Data.Flags,
4397                         "library auto init not supported " &
4398                         "on this platform",
4399                         Lib_Auto_Init.Location, Project);
4400                   end if;
4401
4402                else
4403                   Error_Msg
4404                     (Data.Flags,
4405                      "invalid value for attribute Library_Auto_Init",
4406                      Lib_Auto_Init.Location, Project);
4407                end if;
4408             end if;
4409          end;
4410
4411          --  If attribute Library_Src_Dir is defined and not the empty string,
4412          --  check if the directory exist and is not the object directory or
4413          --  one of the source directories. This is the directory where copies
4414          --  of the interface sources will be copied. Note that this directory
4415          --  may be the library directory.
4416
4417          if Lib_Src_Dir.Value /= Empty_String then
4418             declare
4419                Dir_Id     : constant File_Name_Type :=
4420                               File_Name_Type (Lib_Src_Dir.Value);
4421                Dir_Exists : Boolean;
4422
4423             begin
4424                Locate_Directory
4425                  (Project,
4426                   Dir_Id,
4427                   Path             => Project.Library_Src_Dir,
4428                   Dir_Exists       => Dir_Exists,
4429                   Data             => Data,
4430                   Must_Exist       => False,
4431                   Create           => "library source copy",
4432                   Location         => Lib_Src_Dir.Location,
4433                   Externally_Built => Project.Externally_Built);
4434
4435                --  If directory does not exist, report an error
4436
4437                if not Dir_Exists then
4438
4439                   --  Get the absolute name of the library directory that does
4440                   --  not exist, to report an error.
4441
4442                   Err_Vars.Error_Msg_File_1 :=
4443                     File_Name_Type (Project.Library_Src_Dir.Display_Name);
4444                   Error_Msg
4445                     (Data.Flags,
4446                      "Directory { does not exist",
4447                      Lib_Src_Dir.Location, Project);
4448
4449                   --  Report error if it is the same as the object directory
4450
4451                elsif Project.Library_Src_Dir = Project.Object_Directory then
4452                   Error_Msg
4453                     (Data.Flags,
4454                      "directory to copy interfaces cannot be " &
4455                      "the object directory",
4456                      Lib_Src_Dir.Location, Project);
4457                   Project.Library_Src_Dir := No_Path_Information;
4458
4459                else
4460                   declare
4461                      Src_Dirs : String_List_Id;
4462                      Src_Dir  : String_Element;
4463                      Pid      : Project_List;
4464
4465                   begin
4466                      --  Interface copy directory cannot be one of the source
4467                      --  directory of the current project.
4468
4469                      Src_Dirs := Project.Source_Dirs;
4470                      while Src_Dirs /= Nil_String loop
4471                         Src_Dir := Data.Tree.String_Elements.Table (Src_Dirs);
4472
4473                         --  Report error if it is one of the source directories
4474
4475                         if Project.Library_Src_Dir.Name =
4476                              Path_Name_Type (Src_Dir.Value)
4477                         then
4478                            Error_Msg
4479                              (Data.Flags,
4480                               "directory to copy interfaces cannot " &
4481                               "be one of the source directories",
4482                               Lib_Src_Dir.Location, Project);
4483                            Project.Library_Src_Dir := No_Path_Information;
4484                            exit;
4485                         end if;
4486
4487                         Src_Dirs := Src_Dir.Next;
4488                      end loop;
4489
4490                      if Project.Library_Src_Dir /= No_Path_Information then
4491
4492                         --  It cannot be a source directory of any other
4493                         --  project either.
4494
4495                         Pid := Data.Tree.Projects;
4496                         Project_Loop : loop
4497                            exit Project_Loop when Pid = null;
4498
4499                            Src_Dirs := Pid.Project.Source_Dirs;
4500                            Dir_Loop : while Src_Dirs /= Nil_String loop
4501                               Src_Dir :=
4502                                 Data.Tree.String_Elements.Table (Src_Dirs);
4503
4504                               --  Report error if it is one of the source
4505                               --  directories.
4506
4507                               if Project.Library_Src_Dir.Name =
4508                                 Path_Name_Type (Src_Dir.Value)
4509                               then
4510                                  Error_Msg_File_1 :=
4511                                    File_Name_Type (Src_Dir.Value);
4512                                  Error_Msg_Name_1 := Pid.Project.Name;
4513                                  Error_Msg
4514                                    (Data.Flags,
4515                                     "directory to copy interfaces cannot " &
4516                                     "be the same as source directory { of " &
4517                                     "project %%",
4518                                     Lib_Src_Dir.Location, Project);
4519                                  Project.Library_Src_Dir :=
4520                                    No_Path_Information;
4521                                  exit Project_Loop;
4522                               end if;
4523
4524                               Src_Dirs := Src_Dir.Next;
4525                            end loop Dir_Loop;
4526
4527                            Pid := Pid.Next;
4528                         end loop Project_Loop;
4529                      end if;
4530                   end;
4531
4532                   --  In high verbosity, if there is a valid Library_Src_Dir,
4533                   --  display its path name.
4534
4535                   if Project.Library_Src_Dir /= No_Path_Information
4536                     and then Current_Verbosity = High
4537                   then
4538                      Write_Attr
4539                        ("Directory to copy interfaces",
4540                         Get_Name_String (Project.Library_Src_Dir.Name));
4541                   end if;
4542                end if;
4543             end;
4544          end if;
4545
4546          --  Check the symbol related attributes
4547
4548          --  First, the symbol policy
4549
4550          if not Lib_Symbol_Policy.Default then
4551             declare
4552                Value : constant String :=
4553                          To_Lower
4554                            (Get_Name_String (Lib_Symbol_Policy.Value));
4555
4556             begin
4557                --  Symbol policy must hove one of a limited number of values
4558
4559                if Value = "autonomous" or else Value = "default" then
4560                   Project.Symbol_Data.Symbol_Policy := Autonomous;
4561
4562                elsif Value = "compliant" then
4563                   Project.Symbol_Data.Symbol_Policy := Compliant;
4564
4565                elsif Value = "controlled" then
4566                   Project.Symbol_Data.Symbol_Policy := Controlled;
4567
4568                elsif Value = "restricted" then
4569                   Project.Symbol_Data.Symbol_Policy := Restricted;
4570
4571                elsif Value = "direct" then
4572                   Project.Symbol_Data.Symbol_Policy := Direct;
4573
4574                else
4575                   Error_Msg
4576                     (Data.Flags,
4577                      "illegal value for Library_Symbol_Policy",
4578                      Lib_Symbol_Policy.Location, Project);
4579                end if;
4580             end;
4581          end if;
4582
4583          --  If attribute Library_Symbol_File is not specified, symbol policy
4584          --  cannot be Restricted.
4585
4586          if Lib_Symbol_File.Default then
4587             if Project.Symbol_Data.Symbol_Policy = Restricted then
4588                Error_Msg
4589                  (Data.Flags,
4590                   "Library_Symbol_File needs to be defined when " &
4591                   "symbol policy is Restricted",
4592                   Lib_Symbol_Policy.Location, Project);
4593             end if;
4594
4595          else
4596             --  Library_Symbol_File is defined
4597
4598             Project.Symbol_Data.Symbol_File :=
4599               Path_Name_Type (Lib_Symbol_File.Value);
4600
4601             Get_Name_String (Lib_Symbol_File.Value);
4602
4603             if Name_Len = 0 then
4604                Error_Msg
4605                  (Data.Flags,
4606                   "symbol file name cannot be an empty string",
4607                   Lib_Symbol_File.Location, Project);
4608
4609             else
4610                OK := not Is_Absolute_Path (Name_Buffer (1 .. Name_Len));
4611
4612                if OK then
4613                   for J in 1 .. Name_Len loop
4614                      if Name_Buffer (J) = '/'
4615                        or else Name_Buffer (J) = Directory_Separator
4616                      then
4617                         OK := False;
4618                         exit;
4619                      end if;
4620                   end loop;
4621                end if;
4622
4623                if not OK then
4624                   Error_Msg_File_1 := File_Name_Type (Lib_Symbol_File.Value);
4625                   Error_Msg
4626                     (Data.Flags,
4627                      "symbol file name { is illegal. " &
4628                      "Name cannot include directory info.",
4629                      Lib_Symbol_File.Location, Project);
4630                end if;
4631             end if;
4632          end if;
4633
4634          --  If attribute Library_Reference_Symbol_File is not defined,
4635          --  symbol policy cannot be Compliant or Controlled.
4636
4637          if Lib_Ref_Symbol_File.Default then
4638             if Project.Symbol_Data.Symbol_Policy = Compliant
4639               or else Project.Symbol_Data.Symbol_Policy = Controlled
4640             then
4641                Error_Msg
4642                  (Data.Flags,
4643                   "a reference symbol file needs to be defined",
4644                   Lib_Symbol_Policy.Location, Project);
4645             end if;
4646
4647          else
4648             --  Library_Reference_Symbol_File is defined, check file exists
4649
4650             Project.Symbol_Data.Reference :=
4651               Path_Name_Type (Lib_Ref_Symbol_File.Value);
4652
4653             Get_Name_String (Lib_Ref_Symbol_File.Value);
4654
4655             if Name_Len = 0 then
4656                Error_Msg
4657                  (Data.Flags,
4658                   "reference symbol file name cannot be an empty string",
4659                   Lib_Symbol_File.Location, Project);
4660
4661             else
4662                if not Is_Absolute_Path (Name_Buffer (1 .. Name_Len)) then
4663                   Name_Len := 0;
4664                   Add_Str_To_Name_Buffer
4665                     (Get_Name_String (Project.Directory.Name));
4666                   Add_Str_To_Name_Buffer
4667                     (Get_Name_String (Lib_Ref_Symbol_File.Value));
4668                   Project.Symbol_Data.Reference := Name_Find;
4669                end if;
4670
4671                if not Is_Regular_File
4672                         (Get_Name_String (Project.Symbol_Data.Reference))
4673                then
4674                   Error_Msg_File_1 :=
4675                     File_Name_Type (Lib_Ref_Symbol_File.Value);
4676
4677                   --  For controlled and direct symbol policies, it is an error
4678                   --  if the reference symbol file does not exist. For other
4679                   --  symbol policies, this is just a warning
4680
4681                   Error_Msg_Warn :=
4682                     Project.Symbol_Data.Symbol_Policy /= Controlled
4683                     and then Project.Symbol_Data.Symbol_Policy /= Direct;
4684
4685                   Error_Msg
4686                     (Data.Flags,
4687                      "<library reference symbol file { does not exist",
4688                      Lib_Ref_Symbol_File.Location, Project);
4689
4690                   --  In addition in the non-controlled case, if symbol policy
4691                   --  is Compliant, it is changed to Autonomous, because there
4692                   --  is no reference to check against, and we don't want to
4693                   --  fail in this case.
4694
4695                   if Project.Symbol_Data.Symbol_Policy /= Controlled then
4696                      if Project.Symbol_Data.Symbol_Policy = Compliant then
4697                         Project.Symbol_Data.Symbol_Policy := Autonomous;
4698                      end if;
4699                   end if;
4700                end if;
4701
4702                --  If both the reference symbol file and the symbol file are
4703                --  defined, then check that they are not the same file.
4704
4705                if Project.Symbol_Data.Symbol_File /= No_Path then
4706                   Get_Name_String (Project.Symbol_Data.Symbol_File);
4707
4708                   if Name_Len > 0 then
4709                      declare
4710                         --  We do not need to pass a Directory to
4711                         --  Normalize_Pathname, since the path_information
4712                         --  already contains absolute information.
4713
4714                         Symb_Path : constant String :=
4715                                       Normalize_Pathname
4716                                         (Get_Name_String
4717                                            (Project.Object_Directory.Name) &
4718                                          Name_Buffer (1 .. Name_Len),
4719                                          Directory     => "/",
4720                                          Resolve_Links =>
4721                                            Opt.Follow_Links_For_Files);
4722                         Ref_Path  : constant String :=
4723                                       Normalize_Pathname
4724                                         (Get_Name_String
4725                                            (Project.Symbol_Data.Reference),
4726                                          Directory     => "/",
4727                                          Resolve_Links =>
4728                                            Opt.Follow_Links_For_Files);
4729                      begin
4730                         if Symb_Path = Ref_Path then
4731                            Error_Msg
4732                              (Data.Flags,
4733                               "library reference symbol file and library" &
4734                               " symbol file cannot be the same file",
4735                               Lib_Ref_Symbol_File.Location, Project);
4736                         end if;
4737                      end;
4738                   end if;
4739                end if;
4740             end if;
4741          end if;
4742       end if;
4743    end Check_Stand_Alone_Library;
4744
4745    ----------------------------
4746    -- Compute_Directory_Last --
4747    ----------------------------
4748
4749    function Compute_Directory_Last (Dir : String) return Natural is
4750    begin
4751       if Dir'Length > 1
4752         and then (Dir (Dir'Last - 1) = Directory_Separator
4753                     or else
4754                   Dir (Dir'Last - 1) = '/')
4755       then
4756          return Dir'Last - 1;
4757       else
4758          return Dir'Last;
4759       end if;
4760    end Compute_Directory_Last;
4761
4762    ---------------------
4763    -- Get_Directories --
4764    ---------------------
4765
4766    procedure Get_Directories
4767      (Project     : Project_Id;
4768       Data        : in out Tree_Processing_Data)
4769    is
4770       package Recursive_Dirs is new GNAT.Dynamic_HTables.Simple_HTable
4771         (Header_Num => Header_Num,
4772          Element    => Boolean,
4773          No_Element => False,
4774          Key        => Name_Id,
4775          Hash       => Hash,
4776          Equal      => "=");
4777       --  Hash table stores recursive source directories, to avoid looking
4778       --  several times, and to avoid cycles that may be introduced by symbolic
4779       --  links.
4780
4781       Visited : Recursive_Dirs.Instance;
4782
4783       Object_Dir  : constant Variable_Value :=
4784                       Util.Value_Of
4785                         (Name_Object_Dir, Project.Decl.Attributes, Data.Tree);
4786
4787       Exec_Dir : constant Variable_Value :=
4788                    Util.Value_Of
4789                      (Name_Exec_Dir, Project.Decl.Attributes, Data.Tree);
4790
4791       Source_Dirs : constant Variable_Value :=
4792                       Util.Value_Of
4793                         (Name_Source_Dirs, Project.Decl.Attributes, Data.Tree);
4794
4795       Excluded_Source_Dirs : constant Variable_Value :=
4796                               Util.Value_Of
4797                                 (Name_Excluded_Source_Dirs,
4798                                  Project.Decl.Attributes,
4799                                  Data.Tree);
4800
4801       Source_Files : constant Variable_Value :=
4802                       Util.Value_Of
4803                         (Name_Source_Files,
4804                          Project.Decl.Attributes, Data.Tree);
4805
4806       Last_Source_Dir   : String_List_Id    := Nil_String;
4807       Last_Src_Dir_Rank : Number_List_Index := No_Number_List;
4808
4809       Languages : constant Variable_Value :=
4810                       Prj.Util.Value_Of
4811                         (Name_Languages, Project.Decl.Attributes, Data.Tree);
4812
4813       procedure Find_Source_Dirs
4814         (From     : File_Name_Type;
4815          Location : Source_Ptr;
4816          Rank     : Natural;
4817          Removed  : Boolean := False);
4818       --  Find one or several source directories, and add (or remove, if
4819       --  Removed is True) them to list of source directories of the project.
4820
4821       ----------------------
4822       -- Find_Source_Dirs --
4823       ----------------------
4824
4825       procedure Find_Source_Dirs
4826         (From     : File_Name_Type;
4827          Location : Source_Ptr;
4828          Rank     : Natural;
4829          Removed  : Boolean := False)
4830       is
4831          Directory : constant String := Get_Name_String (From);
4832
4833          procedure Add_To_Or_Remove_From_List
4834            (Path_Id         : Name_Id;
4835             Display_Path_Id : Name_Id);
4836          --  When Removed = False, the directory Path_Id to the list of
4837          --  source_dirs if not already in the list. When Removed = True,
4838          --  removed directory Path_Id if in the list.
4839
4840          procedure Recursive_Find_Dirs (Path : Name_Id);
4841          --  Find all the subdirectories (recursively) of Path and add them
4842          --  to the list of source directories of the project.
4843
4844          --------------------------------
4845          -- Add_To_Or_Remove_From_List --
4846          --------------------------------
4847
4848          procedure Add_To_Or_Remove_From_List
4849            (Path_Id         : Name_Id;
4850             Display_Path_Id : Name_Id)
4851          is
4852             List       : String_List_Id;
4853             Prev       : String_List_Id;
4854             Rank_List  : Number_List_Index;
4855             Prev_Rank  : Number_List_Index;
4856             Element    : String_Element;
4857
4858          begin
4859             Prev      := Nil_String;
4860             Prev_Rank := No_Number_List;
4861             List      := Project.Source_Dirs;
4862             Rank_List := Project.Source_Dir_Ranks;
4863             while List /= Nil_String loop
4864                Element := Data.Tree.String_Elements.Table (List);
4865                exit when Element.Value = Path_Id;
4866                Prev := List;
4867                List := Element.Next;
4868                Prev_Rank := Rank_List;
4869                Rank_List := Data.Tree.Number_Lists.Table (Prev_Rank).Next;
4870             end loop;
4871
4872             --  The directory is in the list if List is not Nil_String
4873
4874             if not Removed and then List = Nil_String then
4875                if Current_Verbosity = High then
4876                   Write_Str  ("   Adding Source Dir=");
4877                   Write_Line (Get_Name_String (Path_Id));
4878                end if;
4879
4880                String_Element_Table.Increment_Last (Data.Tree.String_Elements);
4881                Element :=
4882                  (Value         => Path_Id,
4883                   Index         => 0,
4884                   Display_Value => Display_Path_Id,
4885                   Location      => No_Location,
4886                   Flag          => False,
4887                   Next          => Nil_String);
4888
4889                Number_List_Table.Increment_Last (Data.Tree.Number_Lists);
4890
4891                if Last_Source_Dir = Nil_String then
4892
4893                   --  This is the first source directory
4894
4895                   Project.Source_Dirs :=
4896                     String_Element_Table.Last (Data.Tree.String_Elements);
4897                   Project.Source_Dir_Ranks :=
4898                     Number_List_Table.Last (Data.Tree.Number_Lists);
4899
4900                else
4901                   --  We already have source directories, link the previous
4902                   --  last to the new one.
4903
4904                   Data.Tree.String_Elements.Table (Last_Source_Dir).Next :=
4905                     String_Element_Table.Last (Data.Tree.String_Elements);
4906                   Data.Tree.Number_Lists.Table (Last_Src_Dir_Rank).Next :=
4907                     Number_List_Table.Last (Data.Tree.Number_Lists);
4908                end if;
4909
4910                --  And register this source directory as the new last
4911
4912                Last_Source_Dir :=
4913                  String_Element_Table.Last (Data.Tree.String_Elements);
4914                Data.Tree.String_Elements.Table (Last_Source_Dir) := Element;
4915                Last_Src_Dir_Rank :=
4916                  Number_List_Table.Last (Data.Tree.Number_Lists);
4917                Data.Tree.Number_Lists.Table (Last_Src_Dir_Rank) :=
4918                  (Number => Rank, Next => No_Number_List);
4919
4920             elsif Removed and then List /= Nil_String then
4921
4922                --  Remove source dir, if present
4923
4924                if Prev = Nil_String then
4925                   Project.Source_Dirs :=
4926                     Data.Tree.String_Elements.Table (List).Next;
4927                   Project.Source_Dir_Ranks :=
4928                     Data.Tree.Number_Lists.Table (Rank_List).Next;
4929
4930                else
4931                   Data.Tree.String_Elements.Table (Prev).Next :=
4932                     Data.Tree.String_Elements.Table (List).Next;
4933                   Data.Tree.Number_Lists.Table (Prev_Rank).Next :=
4934                     Data.Tree.Number_Lists.Table (Rank_List).Next;
4935                end if;
4936             end if;
4937          end Add_To_Or_Remove_From_List;
4938
4939          -------------------------
4940          -- Recursive_Find_Dirs --
4941          -------------------------
4942
4943          procedure Recursive_Find_Dirs (Path : Name_Id) is
4944             Dir  : Dir_Type;
4945             Name : String (1 .. 250);
4946             Last : Natural;
4947
4948             Non_Canonical_Path : Name_Id := No_Name;
4949             Canonical_Path     : Name_Id := No_Name;
4950
4951             The_Path : constant String :=
4952                          Normalize_Pathname
4953                            (Get_Name_String (Path),
4954                             Directory     =>
4955                               Get_Name_String (Project.Directory.Display_Name),
4956                             Resolve_Links => Opt.Follow_Links_For_Dirs) &
4957                          Directory_Separator;
4958
4959             The_Path_Last : constant Natural :=
4960                               Compute_Directory_Last (The_Path);
4961
4962          begin
4963             Name_Len := The_Path_Last - The_Path'First + 1;
4964             Name_Buffer (1 .. Name_Len) :=
4965               The_Path (The_Path'First .. The_Path_Last);
4966             Non_Canonical_Path := Name_Find;
4967             Canonical_Path :=
4968               Name_Id (Canonical_Case_File_Name (Non_Canonical_Path));
4969
4970             --  To avoid processing the same directory several times, check
4971             --  if the directory is already in Recursive_Dirs. If it is, then
4972             --  there is nothing to do, just return. If it is not, put it there
4973             --  and continue recursive processing.
4974
4975             if not Removed then
4976                if Recursive_Dirs.Get (Visited, Canonical_Path) then
4977                   return;
4978                else
4979                   Recursive_Dirs.Set (Visited, Canonical_Path, True);
4980                end if;
4981             end if;
4982
4983             Add_To_Or_Remove_From_List
4984               (Path_Id         => Canonical_Path,
4985                Display_Path_Id => Non_Canonical_Path);
4986
4987             --  Now look for subdirectories. Do that even when this directory
4988             --  is already in the list, because some of its subdirectories may
4989             --  not be in the list yet.
4990
4991             Open (Dir, The_Path (The_Path'First .. The_Path_Last));
4992
4993             loop
4994                Read (Dir, Name, Last);
4995                exit when Last = 0;
4996
4997                if Name (1 .. Last) /= "."
4998                  and then Name (1 .. Last) /= ".."
4999                then
5000                   --  Avoid . and .. directories
5001
5002                   if Current_Verbosity = High then
5003                      Write_Str  ("   Checking ");
5004                      Write_Line (Name (1 .. Last));
5005                   end if;
5006
5007                   declare
5008                      Path_Name : constant String :=
5009                                    Normalize_Pathname
5010                                      (Name           => Name (1 .. Last),
5011                                       Directory      =>
5012                                         The_Path
5013                                           (The_Path'First .. The_Path_Last),
5014                                       Resolve_Links  =>
5015                                         Opt.Follow_Links_For_Dirs,
5016                                       Case_Sensitive => True);
5017
5018                   begin
5019                      if Is_Directory (Path_Name) then
5020
5021                         --  We have found a new subdirectory, call self
5022
5023                         Name_Len := Path_Name'Length;
5024                         Name_Buffer (1 .. Name_Len) := Path_Name;
5025                         Recursive_Find_Dirs (Name_Find);
5026                      end if;
5027                   end;
5028                end if;
5029             end loop;
5030
5031             Close (Dir);
5032
5033          exception
5034             when Directory_Error =>
5035                null;
5036          end Recursive_Find_Dirs;
5037
5038       --  Start of processing for Find_Source_Dirs
5039
5040       begin
5041          if Current_Verbosity = High and then not Removed then
5042             Write_Str ("Find_Source_Dirs (""");
5043             Write_Str (Directory);
5044             Write_Str (",");
5045             Write_Str (Rank'Img);
5046             Write_Line (""")");
5047          end if;
5048
5049          --  First, check if we are looking for a directory tree, indicated
5050          --  by "/**" at the end.
5051
5052          if Directory'Length >= 3
5053            and then Directory (Directory'Last - 1 .. Directory'Last) = "**"
5054            and then (Directory (Directory'Last - 2) = '/'
5055                        or else
5056                      Directory (Directory'Last - 2) = Directory_Separator)
5057          then
5058             Name_Len := Directory'Length - 3;
5059
5060             if Name_Len = 0 then
5061
5062                --  Case of "/**": all directories in file system
5063
5064                Name_Len := 1;
5065                Name_Buffer (1) := Directory (Directory'First);
5066
5067             else
5068                Name_Buffer (1 .. Name_Len) :=
5069                  Directory (Directory'First .. Directory'Last - 3);
5070             end if;
5071
5072             if Current_Verbosity = High then
5073                Write_Str ("Looking for all subdirectories of """);
5074                Write_Str (Name_Buffer (1 .. Name_Len));
5075                Write_Line ("""");
5076             end if;
5077
5078             declare
5079                Base_Dir : constant File_Name_Type := Name_Find;
5080                Root_Dir : constant String :=
5081                             Normalize_Pathname
5082                               (Name      => Get_Name_String (Base_Dir),
5083                                Directory =>
5084                                  Get_Name_String
5085                                    (Project.Directory.Display_Name),
5086                                Resolve_Links  =>
5087                                  Opt.Follow_Links_For_Dirs,
5088                                Case_Sensitive => True);
5089
5090             begin
5091                if Root_Dir'Length = 0 then
5092                   Err_Vars.Error_Msg_File_1 := Base_Dir;
5093
5094                   if Location = No_Location then
5095                      Error_Msg
5096                        (Data.Flags,
5097                         "{ is not a valid directory.",
5098                         Project.Location, Project);
5099                   else
5100                      Error_Msg
5101                        (Data.Flags,
5102                         "{ is not a valid directory.",
5103                         Location, Project);
5104                   end if;
5105
5106                else
5107                   --  We have an existing directory, we register it and all of
5108                   --  its subdirectories.
5109
5110                   if Current_Verbosity = High then
5111                      Write_Line ("Looking for source directories:");
5112                   end if;
5113
5114                   Name_Len := Root_Dir'Length;
5115                   Name_Buffer (1 .. Name_Len) := Root_Dir;
5116                   Recursive_Find_Dirs (Name_Find);
5117
5118                   if Current_Verbosity = High then
5119                      Write_Line ("End of looking for source directories.");
5120                   end if;
5121                end if;
5122             end;
5123
5124          --  We have a single directory
5125
5126          else
5127             declare
5128                Path_Name  : Path_Information;
5129                Dir_Exists : Boolean;
5130
5131             begin
5132                Locate_Directory
5133                  (Project     => Project,
5134                   Name        => From,
5135                   Path        => Path_Name,
5136                   Dir_Exists  => Dir_Exists,
5137                   Data        => Data,
5138                   Must_Exist  => False);
5139
5140                if not Dir_Exists then
5141                   Err_Vars.Error_Msg_File_1 := From;
5142
5143                   if Location = No_Location then
5144                      Error_Msg
5145                        (Data.Flags,
5146                         "{ is not a valid directory",
5147                         Project.Location, Project);
5148                   else
5149                      Error_Msg
5150                        (Data.Flags,
5151                         "{ is not a valid directory",
5152                         Location, Project);
5153                   end if;
5154
5155                else
5156                   declare
5157                      Path : constant String :=
5158                               Normalize_Pathname
5159                                 (Name           =>
5160                                    Get_Name_String (Path_Name.Name),
5161                                  Directory      =>
5162                                    Get_Name_String (Project.Directory.Name),
5163                                  Resolve_Links  => Opt.Follow_Links_For_Dirs,
5164                                  Case_Sensitive => True) &
5165                               Directory_Separator;
5166
5167                      Last_Path         : constant Natural :=
5168                                            Compute_Directory_Last (Path);
5169                      Path_Id           : Name_Id;
5170                      Display_Path      : constant String :=
5171                                            Get_Name_String
5172                                              (Path_Name.Display_Name);
5173                      Last_Display_Path : constant Natural :=
5174                                            Compute_Directory_Last
5175                                              (Display_Path);
5176                      Display_Path_Id   : Name_Id;
5177
5178                   begin
5179                      Name_Len := 0;
5180                      Add_Str_To_Name_Buffer (Path (Path'First .. Last_Path));
5181                      Path_Id := Name_Find;
5182
5183                      Name_Len := 0;
5184                      Add_Str_To_Name_Buffer
5185                        (Display_Path
5186                           (Display_Path'First .. Last_Display_Path));
5187                      Display_Path_Id := Name_Find;
5188
5189                      Add_To_Or_Remove_From_List
5190                        (Path_Id         => Path_Id,
5191                         Display_Path_Id => Display_Path_Id);
5192                   end;
5193                end if;
5194             end;
5195          end if;
5196
5197          Recursive_Dirs.Reset (Visited);
5198       end Find_Source_Dirs;
5199
5200    --  Start of processing for Get_Directories
5201
5202       Dir_Exists : Boolean;
5203
5204    begin
5205       if Current_Verbosity = High then
5206          Write_Line ("Starting to look for directories");
5207       end if;
5208
5209       --  Set the object directory to its default which may be nil, if there
5210       --  is no sources in the project.
5211
5212       if (((not Source_Files.Default)
5213              and then Source_Files.Values = Nil_String)
5214           or else
5215            ((not Source_Dirs.Default) and then Source_Dirs.Values = Nil_String)
5216               or else
5217            ((not Languages.Default) and then Languages.Values = Nil_String))
5218         and then Project.Extends = No_Project
5219       then
5220          Project.Object_Directory := No_Path_Information;
5221       else
5222          Project.Object_Directory := Project.Directory;
5223       end if;
5224
5225       --  Check the object directory
5226
5227       if Object_Dir.Value /= Empty_String then
5228          Get_Name_String (Object_Dir.Value);
5229
5230          if Name_Len = 0 then
5231             Error_Msg
5232               (Data.Flags,
5233                "Object_Dir cannot be empty",
5234                Object_Dir.Location, Project);
5235
5236          else
5237             --  We check that the specified object directory does exist.
5238             --  However, even when it doesn't exist, we set it to a default
5239             --  value. This is for the benefit of tools that recover from
5240             --  errors; for example, these tools could create the non existent
5241             --  directory. We always return an absolute directory name though.
5242
5243             Locate_Directory
5244               (Project,
5245                File_Name_Type (Object_Dir.Value),
5246                Path             => Project.Object_Directory,
5247                Create           => "object",
5248                Dir_Exists       => Dir_Exists,
5249                Data             => Data,
5250                Location         => Object_Dir.Location,
5251                Must_Exist       => False,
5252                Externally_Built => Project.Externally_Built);
5253
5254             if not Dir_Exists
5255               and then not Project.Externally_Built
5256             then
5257                --  The object directory does not exist, report an error if
5258                --  the project is not externally built.
5259
5260                Err_Vars.Error_Msg_File_1 :=
5261                  File_Name_Type (Object_Dir.Value);
5262
5263                case Data.Flags.Require_Obj_Dirs is
5264                   when Error =>
5265                      Error_Msg
5266                        (Data.Flags,
5267                         "object directory { not found",
5268                         Project.Location, Project);
5269                   when Warning =>
5270                      Error_Msg
5271                        (Data.Flags,
5272                         "?object directory { not found",
5273                         Project.Location, Project);
5274                   when Silent =>
5275                      null;
5276                end case;
5277             end if;
5278          end if;
5279
5280       elsif Project.Object_Directory /= No_Path_Information
5281         and then Subdirs /= null
5282       then
5283          Name_Len := 1;
5284          Name_Buffer (1) := '.';
5285          Locate_Directory
5286            (Project,
5287             Name_Find,
5288             Path             => Project.Object_Directory,
5289             Create           => "object",
5290             Dir_Exists       => Dir_Exists,
5291             Data             => Data,
5292             Location         => Object_Dir.Location,
5293             Externally_Built => Project.Externally_Built);
5294       end if;
5295
5296       if Current_Verbosity = High then
5297          if Project.Object_Directory = No_Path_Information then
5298             Write_Line ("No object directory");
5299          else
5300             Write_Attr
5301               ("Object directory",
5302                Get_Name_String (Project.Object_Directory.Display_Name));
5303          end if;
5304       end if;
5305
5306       --  Check the exec directory
5307
5308       --  We set the object directory to its default
5309
5310       Project.Exec_Directory   := Project.Object_Directory;
5311
5312       if Exec_Dir.Value /= Empty_String then
5313          Get_Name_String (Exec_Dir.Value);
5314
5315          if Name_Len = 0 then
5316             Error_Msg
5317               (Data.Flags,
5318                "Exec_Dir cannot be empty",
5319                Exec_Dir.Location, Project);
5320
5321          else
5322             --  We check that the specified exec directory does exist
5323
5324             Locate_Directory
5325               (Project,
5326                File_Name_Type (Exec_Dir.Value),
5327                Path             => Project.Exec_Directory,
5328                Dir_Exists       => Dir_Exists,
5329                Data             => Data,
5330                Create           => "exec",
5331                Location         => Exec_Dir.Location,
5332                Externally_Built => Project.Externally_Built);
5333
5334             if not Dir_Exists then
5335                Err_Vars.Error_Msg_File_1 := File_Name_Type (Exec_Dir.Value);
5336                Error_Msg
5337                  (Data.Flags,
5338                   "exec directory { not found",
5339                   Project.Location, Project);
5340             end if;
5341          end if;
5342       end if;
5343
5344       if Current_Verbosity = High then
5345          if Project.Exec_Directory = No_Path_Information then
5346             Write_Line ("No exec directory");
5347          else
5348             Write_Str ("Exec directory: """);
5349             Write_Str (Get_Name_String (Project.Exec_Directory.Display_Name));
5350             Write_Line ("""");
5351          end if;
5352       end if;
5353
5354       --  Look for the source directories
5355
5356       if Current_Verbosity = High then
5357          Write_Line ("Starting to look for source directories");
5358       end if;
5359
5360       pragma Assert (Source_Dirs.Kind = List, "Source_Dirs is not a list");
5361
5362       if (not Source_Files.Default)
5363         and then Source_Files.Values = Nil_String
5364       then
5365          Project.Source_Dirs := Nil_String;
5366
5367          if Project.Qualifier = Standard then
5368             Error_Msg
5369               (Data.Flags,
5370                "a standard project cannot have no sources",
5371                Source_Files.Location, Project);
5372          end if;
5373
5374       elsif Source_Dirs.Default then
5375
5376          --  No Source_Dirs specified: the single source directory is the one
5377          --  containing the project file.
5378
5379          String_Element_Table.Append (Data.Tree.String_Elements,
5380            (Value         => Name_Id (Project.Directory.Name),
5381             Display_Value => Name_Id (Project.Directory.Display_Name),
5382             Location      => No_Location,
5383             Flag          => False,
5384             Next          => Nil_String,
5385             Index         => 0));
5386
5387          Project.Source_Dirs :=
5388            String_Element_Table.Last (Data.Tree.String_Elements);
5389
5390          Number_List_Table.Append
5391            (Data.Tree.Number_Lists,
5392             (Number => 1, Next => No_Number_List));
5393
5394          Project.Source_Dir_Ranks :=
5395            Number_List_Table.Last (Data.Tree.Number_Lists);
5396
5397          if Current_Verbosity = High then
5398             Write_Attr
5399               ("Default source directory",
5400                Get_Name_String (Project.Directory.Display_Name));
5401          end if;
5402
5403       elsif Source_Dirs.Values = Nil_String then
5404          if Project.Qualifier = Standard then
5405             Error_Msg
5406               (Data.Flags,
5407                "a standard project cannot have no source directories",
5408                Source_Dirs.Location, Project);
5409          end if;
5410
5411          Project.Source_Dirs := Nil_String;
5412
5413       else
5414          declare
5415             Source_Dir : String_List_Id;
5416             Element    : String_Element;
5417             Rank       : Natural;
5418          begin
5419             --  Process the source directories for each element of the list
5420
5421             Source_Dir := Source_Dirs.Values;
5422             Rank := 0;
5423             while Source_Dir /= Nil_String loop
5424                Element := Data.Tree.String_Elements.Table (Source_Dir);
5425                Rank := Rank + 1;
5426                Find_Source_Dirs
5427                  (File_Name_Type (Element.Value), Element.Location, Rank);
5428                Source_Dir := Element.Next;
5429             end loop;
5430          end;
5431       end if;
5432
5433       if not Excluded_Source_Dirs.Default
5434         and then Excluded_Source_Dirs.Values /= Nil_String
5435       then
5436          declare
5437             Source_Dir : String_List_Id;
5438             Element    : String_Element;
5439
5440          begin
5441             --  Process the source directories for each element of the list
5442
5443             Source_Dir := Excluded_Source_Dirs.Values;
5444             while Source_Dir /= Nil_String loop
5445                Element := Data.Tree.String_Elements.Table (Source_Dir);
5446                Find_Source_Dirs
5447                  (File_Name_Type (Element.Value),
5448                   Element.Location,
5449                   0,
5450                   Removed => True);
5451                Source_Dir := Element.Next;
5452             end loop;
5453          end;
5454       end if;
5455
5456       if Current_Verbosity = High then
5457          Write_Line ("Putting source directories in canonical cases");
5458       end if;
5459
5460       declare
5461          Current : String_List_Id := Project.Source_Dirs;
5462          Element : String_Element;
5463
5464       begin
5465          while Current /= Nil_String loop
5466             Element := Data.Tree.String_Elements.Table (Current);
5467             if Element.Value /= No_Name then
5468                Element.Value :=
5469                  Name_Id (Canonical_Case_File_Name (Name_Id (Element.Value)));
5470                Data.Tree.String_Elements.Table (Current) := Element;
5471             end if;
5472
5473             Current := Element.Next;
5474          end loop;
5475       end;
5476    end Get_Directories;
5477
5478    ---------------
5479    -- Get_Mains --
5480    ---------------
5481
5482    procedure Get_Mains
5483      (Project : Project_Id;
5484       Data    : in out Tree_Processing_Data)
5485    is
5486       Mains : constant Variable_Value :=
5487                Prj.Util.Value_Of
5488                  (Name_Main, Project.Decl.Attributes, Data.Tree);
5489       List  : String_List_Id;
5490       Elem  : String_Element;
5491
5492    begin
5493       Project.Mains := Mains.Values;
5494
5495       --  If no Mains were specified, and if we are an extending project,
5496       --  inherit the Mains from the project we are extending.
5497
5498       if Mains.Default then
5499          if not Project.Library and then Project.Extends /= No_Project then
5500             Project.Mains := Project.Extends.Mains;
5501          end if;
5502
5503       --  In a library project file, Main cannot be specified
5504
5505       elsif Project.Library then
5506          Error_Msg
5507            (Data.Flags,
5508             "a library project file cannot have Main specified",
5509             Mains.Location, Project);
5510
5511       else
5512          List := Mains.Values;
5513          while List /= Nil_String loop
5514             Elem := Data.Tree.String_Elements.Table (List);
5515
5516             if Length_Of_Name (Elem.Value) = 0 then
5517                Error_Msg
5518                  (Data.Flags,
5519                   "?a main cannot have an empty name",
5520                   Elem.Location, Project);
5521                exit;
5522             end if;
5523
5524             List := Elem.Next;
5525          end loop;
5526       end if;
5527    end Get_Mains;
5528
5529    ---------------------------
5530    -- Get_Sources_From_File --
5531    ---------------------------
5532
5533    procedure Get_Sources_From_File
5534      (Path     : String;
5535       Location : Source_Ptr;
5536       Project  : in out Project_Processing_Data;
5537       Data     : in out Tree_Processing_Data)
5538    is
5539       File        : Prj.Util.Text_File;
5540       Line        : String (1 .. 250);
5541       Last        : Natural;
5542       Source_Name : File_Name_Type;
5543       Name_Loc    : Name_Location;
5544
5545    begin
5546       if Current_Verbosity = High then
5547          Write_Str  ("Opening """);
5548          Write_Str  (Path);
5549          Write_Line (""".");
5550       end if;
5551
5552       --  Open the file
5553
5554       Prj.Util.Open (File, Path);
5555
5556       if not Prj.Util.Is_Valid (File) then
5557          Error_Msg
5558            (Data.Flags, "file does not exist", Location, Project.Project);
5559
5560       else
5561          --  Read the lines one by one
5562
5563          while not Prj.Util.End_Of_File (File) loop
5564             Prj.Util.Get_Line (File, Line, Last);
5565
5566             --  A non empty, non comment line should contain a file name
5567
5568             if Last /= 0
5569               and then (Last = 1 or else Line (1 .. 2) /= "--")
5570             then
5571                Name_Len := Last;
5572                Name_Buffer (1 .. Name_Len) := Line (1 .. Last);
5573                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
5574                Source_Name := Name_Find;
5575
5576                --  Check that there is no directory information
5577
5578                for J in 1 .. Last loop
5579                   if Line (J) = '/' or else Line (J) = Directory_Separator then
5580                      Error_Msg_File_1 := Source_Name;
5581                      Error_Msg
5582                        (Data.Flags,
5583                         "file name cannot include directory information ({)",
5584                         Location, Project.Project);
5585                      exit;
5586                   end if;
5587                end loop;
5588
5589                Name_Loc := Source_Names_Htable.Get
5590                  (Project.Source_Names, Source_Name);
5591
5592                if Name_Loc = No_Name_Location then
5593                   Name_Loc :=
5594                     (Name     => Source_Name,
5595                      Location => Location,
5596                      Source   => No_Source,
5597                      Found    => False);
5598                end if;
5599
5600                Source_Names_Htable.Set
5601                  (Project.Source_Names, Source_Name, Name_Loc);
5602             end if;
5603          end loop;
5604
5605          Prj.Util.Close (File);
5606
5607       end if;
5608    end Get_Sources_From_File;
5609
5610    -----------------------
5611    -- Compute_Unit_Name --
5612    -----------------------
5613
5614    procedure Compute_Unit_Name
5615      (File_Name : File_Name_Type;
5616       Naming    : Lang_Naming_Data;
5617       Kind      : out Source_Kind;
5618       Unit      : out Name_Id;
5619       Project   : Project_Processing_Data;
5620       In_Tree   : Project_Tree_Ref)
5621    is
5622       Filename : constant String  := Get_Name_String (File_Name);
5623       Last     : Integer          := Filename'Last;
5624       Sep_Len  : Integer;
5625       Body_Len : Integer;
5626       Spec_Len : Integer;
5627
5628       Unit_Except : Unit_Exception;
5629       Masked      : Boolean  := False;
5630
5631    begin
5632       Unit := No_Name;
5633       Kind := Spec;
5634
5635       if Naming.Separate_Suffix = No_File
5636         or else Naming.Body_Suffix = No_File
5637         or else Naming.Spec_Suffix = No_File
5638       then
5639          return;
5640       end if;
5641
5642       if Naming.Dot_Replacement = No_File then
5643          if Current_Verbosity = High then
5644             Write_Line ("  No dot_replacement specified");
5645          end if;
5646
5647          return;
5648       end if;
5649
5650       Sep_Len  := Integer (Length_Of_Name (Naming.Separate_Suffix));
5651       Spec_Len := Integer (Length_Of_Name (Naming.Spec_Suffix));
5652       Body_Len := Integer (Length_Of_Name (Naming.Body_Suffix));
5653
5654       --  Choose the longest suffix that matches. If there are several matches,
5655       --  give priority to specs, then bodies, then separates.
5656
5657       if Naming.Separate_Suffix /= Naming.Body_Suffix
5658         and then Suffix_Matches (Filename, Naming.Separate_Suffix)
5659       then
5660          Last := Filename'Last - Sep_Len;
5661          Kind := Sep;
5662       end if;
5663
5664       if Filename'Last - Body_Len <= Last
5665         and then Suffix_Matches (Filename, Naming.Body_Suffix)
5666       then
5667          Last := Natural'Min (Last, Filename'Last - Body_Len);
5668          Kind := Impl;
5669       end if;
5670
5671       if Filename'Last - Spec_Len <= Last
5672         and then Suffix_Matches (Filename, Naming.Spec_Suffix)
5673       then
5674          Last := Natural'Min (Last, Filename'Last - Spec_Len);
5675          Kind := Spec;
5676       end if;
5677
5678       if Last = Filename'Last then
5679          if Current_Verbosity = High then
5680             Write_Line ("     no matching suffix");
5681          end if;
5682
5683          return;
5684       end if;
5685
5686       --  Check that the casing matches
5687
5688       if File_Names_Case_Sensitive then
5689          case Naming.Casing is
5690             when All_Lower_Case =>
5691                for J in Filename'First .. Last loop
5692                   if Is_Letter (Filename (J))
5693                     and then not Is_Lower (Filename (J))
5694                   then
5695                      if Current_Verbosity = High then
5696                         Write_Line ("  Invalid casing");
5697                      end if;
5698
5699                      return;
5700                   end if;
5701                end loop;
5702
5703             when All_Upper_Case =>
5704                for J in Filename'First .. Last loop
5705                   if Is_Letter (Filename (J))
5706                     and then not Is_Upper (Filename (J))
5707                   then
5708                      if Current_Verbosity = High then
5709                         Write_Line ("  Invalid casing");
5710                      end if;
5711
5712                      return;
5713                   end if;
5714                end loop;
5715
5716             when Mixed_Case | Unknown =>
5717                null;
5718          end case;
5719       end if;
5720
5721       --  If Dot_Replacement is not a single dot, then there should not
5722       --  be any dot in the name.
5723
5724       declare
5725          Dot_Repl : constant String :=
5726                       Get_Name_String (Naming.Dot_Replacement);
5727
5728       begin
5729          if Dot_Repl /= "." then
5730             for Index in Filename'First .. Last loop
5731                if Filename (Index) = '.' then
5732                   if Current_Verbosity = High then
5733                      Write_Line ("   Invalid name, contains dot");
5734                   end if;
5735
5736                   return;
5737                end if;
5738             end loop;
5739
5740             Replace_Into_Name_Buffer
5741               (Filename (Filename'First .. Last), Dot_Repl, '.');
5742
5743          else
5744             Name_Len := Last - Filename'First + 1;
5745             Name_Buffer (1 .. Name_Len) := Filename (Filename'First .. Last);
5746             Fixed.Translate
5747               (Source  => Name_Buffer (1 .. Name_Len),
5748                Mapping => Lower_Case_Map);
5749          end if;
5750       end;
5751
5752       --  In the standard GNAT naming scheme, check for special cases: children
5753       --  or separates of A, G, I or S, and run time sources.
5754
5755       if Is_Standard_GNAT_Naming (Naming)
5756         and then Name_Len >= 3
5757       then
5758          declare
5759             S1 : constant Character := Name_Buffer (1);
5760             S2 : constant Character := Name_Buffer (2);
5761             S3 : constant Character := Name_Buffer (3);
5762
5763          begin
5764             if        S1 = 'a'
5765               or else S1 = 'g'
5766               or else S1 = 'i'
5767               or else S1 = 's'
5768             then
5769                --  Children or separates of packages A, G, I or S. These names
5770                --  are x__ ... or x~... (where x is a, g, i, or s). Both
5771                --  versions (x__... and x~...) are allowed in all platforms,
5772                --  because it is not possible to know the platform before
5773                --  processing of the project files.
5774
5775                if S2 = '_' and then S3 = '_' then
5776                   Name_Buffer (2) := '.';
5777                   Name_Buffer (3 .. Name_Len - 1) :=
5778                     Name_Buffer (4 .. Name_Len);
5779                   Name_Len := Name_Len - 1;
5780
5781                elsif S2 = '~' then
5782                   Name_Buffer (2) := '.';
5783
5784                elsif S2 = '.' then
5785
5786                   --  If it is potentially a run time source
5787
5788                   null;
5789                end if;
5790             end if;
5791          end;
5792       end if;
5793
5794       --  Name_Buffer contains the name of the the unit in lower-cases. Check
5795       --  that this is a valid unit name
5796
5797       Check_Ada_Name (Name_Buffer (1 .. Name_Len), Unit);
5798
5799       --  If there is a naming exception for the same unit, the file is not
5800       --  a source for the unit.
5801
5802       if Unit /= No_Name then
5803          Unit_Except :=
5804            Unit_Exceptions_Htable.Get (Project.Unit_Exceptions, Unit);
5805
5806          if Kind = Spec then
5807             Masked := Unit_Except.Spec /= No_File
5808                         and then
5809                       Unit_Except.Spec /= File_Name;
5810          else
5811             Masked := Unit_Except.Impl /= No_File
5812                         and then
5813                       Unit_Except.Impl /= File_Name;
5814          end if;
5815
5816          if Masked then
5817             if Current_Verbosity = High then
5818                Write_Str ("   """ & Filename & """ contains the ");
5819
5820                if Kind = Spec then
5821                   Write_Str ("spec of a unit found in """);
5822                   Write_Str (Get_Name_String (Unit_Except.Spec));
5823                else
5824                   Write_Str ("body of a unit found in """);
5825                   Write_Str (Get_Name_String (Unit_Except.Impl));
5826                end if;
5827
5828                Write_Line (""" (ignored)");
5829             end if;
5830
5831             Unit := No_Name;
5832          end if;
5833       end if;
5834
5835       if Unit /= No_Name
5836         and then Current_Verbosity = High
5837       then
5838          case Kind is
5839             when Spec => Write_Str ("   spec of ");
5840             when Impl => Write_Str ("   body of ");
5841             when Sep  => Write_Str ("   sep of ");
5842          end case;
5843
5844          Write_Line (Get_Name_String (Unit));
5845       end if;
5846    end Compute_Unit_Name;
5847
5848    --------------------------
5849    -- Check_Illegal_Suffix --
5850    --------------------------
5851
5852    procedure Check_Illegal_Suffix
5853      (Project         : Project_Id;
5854       Suffix          : File_Name_Type;
5855       Dot_Replacement : File_Name_Type;
5856       Attribute_Name  : String;
5857       Location        : Source_Ptr;
5858       Data            : in out Tree_Processing_Data)
5859    is
5860       Suffix_Str : constant String := Get_Name_String (Suffix);
5861
5862    begin
5863       if Suffix_Str'Length = 0 then
5864
5865          --  Always valid
5866
5867          return;
5868
5869       elsif Index (Suffix_Str, ".") = 0 then
5870          Err_Vars.Error_Msg_File_1 := Suffix;
5871          Error_Msg
5872            (Data.Flags,
5873             "{ is illegal for " & Attribute_Name & ": must have a dot",
5874             Location, Project);
5875          return;
5876       end if;
5877
5878       --  Case of dot replacement is a single dot, and first character of
5879       --  suffix is also a dot.
5880
5881       if Dot_Replacement /= No_File
5882         and then Get_Name_String (Dot_Replacement) = "."
5883         and then Suffix_Str (Suffix_Str'First) = '.'
5884       then
5885          for Index in Suffix_Str'First + 1 .. Suffix_Str'Last loop
5886
5887             --  If there are multiple dots in the name
5888
5889             if Suffix_Str (Index) = '.' then
5890
5891                --  It is illegal to have a letter following the initial dot
5892
5893                if Is_Letter (Suffix_Str (Suffix_Str'First + 1)) then
5894                   Err_Vars.Error_Msg_File_1 := Suffix;
5895                   Error_Msg
5896                     (Data.Flags,
5897                      "{ is illegal for " & Attribute_Name
5898                      & ": ambiguous prefix when Dot_Replacement is a dot",
5899                      Location, Project);
5900                end if;
5901                return;
5902             end if;
5903          end loop;
5904       end if;
5905    end Check_Illegal_Suffix;
5906
5907    ----------------------
5908    -- Locate_Directory --
5909    ----------------------
5910
5911    procedure Locate_Directory
5912      (Project          : Project_Id;
5913       Name             : File_Name_Type;
5914       Path             : out Path_Information;
5915       Dir_Exists       : out Boolean;
5916       Data             : in out Tree_Processing_Data;
5917       Create           : String := "";
5918       Location         : Source_Ptr := No_Location;
5919       Must_Exist       : Boolean := True;
5920       Externally_Built : Boolean := False)
5921    is
5922       Parent          : constant Path_Name_Type :=
5923                           Project.Directory.Display_Name;
5924       The_Parent      : constant String :=
5925                           Get_Name_String (Parent);
5926       The_Parent_Last : constant Natural :=
5927                           Compute_Directory_Last (The_Parent);
5928       Full_Name       : File_Name_Type;
5929       The_Name        : File_Name_Type;
5930
5931    begin
5932       Get_Name_String (Name);
5933
5934       --  Add Subdirs.all if it is a directory that may be created and
5935       --  Subdirs is not null;
5936
5937       if Create /= "" and then Subdirs /= null then
5938          if Name_Buffer (Name_Len) /= Directory_Separator then
5939             Add_Char_To_Name_Buffer (Directory_Separator);
5940          end if;
5941
5942          Add_Str_To_Name_Buffer (Subdirs.all);
5943       end if;
5944
5945       --  Convert '/' to directory separator (for Windows)
5946
5947       for J in 1 .. Name_Len loop
5948          if Name_Buffer (J) = '/' then
5949             Name_Buffer (J) := Directory_Separator;
5950          end if;
5951       end loop;
5952
5953       The_Name := Name_Find;
5954
5955       if Current_Verbosity = High then
5956          Write_Str ("Locate_Directory (""");
5957          Write_Str (Get_Name_String (The_Name));
5958          Write_Str (""", """);
5959          Write_Str (The_Parent);
5960          Write_Line (""")");
5961       end if;
5962
5963       Path := No_Path_Information;
5964       Dir_Exists := False;
5965
5966       if Is_Absolute_Path (Get_Name_String (The_Name)) then
5967          Full_Name := The_Name;
5968
5969       else
5970          Name_Len := 0;
5971          Add_Str_To_Name_Buffer
5972            (The_Parent (The_Parent'First .. The_Parent_Last));
5973          Add_Str_To_Name_Buffer (Get_Name_String (The_Name));
5974          Full_Name := Name_Find;
5975       end if;
5976
5977       declare
5978          Full_Path_Name : String_Access :=
5979                             new String'(Get_Name_String (Full_Name));
5980
5981       begin
5982          if (Setup_Projects or else Subdirs /= null)
5983            and then Create'Length > 0
5984          then
5985             if not Is_Directory (Full_Path_Name.all) then
5986
5987                --  If project is externally built, do not create a subdir,
5988                --  use the specified directory, without the subdir.
5989
5990                if Externally_Built then
5991                   if Is_Absolute_Path (Get_Name_String (Name)) then
5992                      Get_Name_String (Name);
5993
5994                   else
5995                      Name_Len := 0;
5996                      Add_Str_To_Name_Buffer
5997                        (The_Parent (The_Parent'First .. The_Parent_Last));
5998                      Add_Str_To_Name_Buffer (Get_Name_String (Name));
5999                   end if;
6000
6001                   Full_Path_Name := new String'(Name_Buffer (1 .. Name_Len));
6002
6003                else
6004                   begin
6005                      Create_Path (Full_Path_Name.all);
6006
6007                      if not Quiet_Output then
6008                         Write_Str (Create);
6009                         Write_Str (" directory """);
6010                         Write_Str (Full_Path_Name.all);
6011                         Write_Str (""" created for project ");
6012                         Write_Line (Get_Name_String (Project.Name));
6013                      end if;
6014
6015                   exception
6016                      when Use_Error =>
6017                         Error_Msg
6018                           (Data.Flags,
6019                            "could not create " & Create &
6020                            " directory " & Full_Path_Name.all,
6021                            Location, Project);
6022                   end;
6023                end if;
6024             end if;
6025          end if;
6026
6027          Dir_Exists := Is_Directory (Full_Path_Name.all);
6028
6029          if not Must_Exist or else Dir_Exists then
6030             declare
6031                Normed : constant String :=
6032                           Normalize_Pathname
6033                             (Full_Path_Name.all,
6034                              Directory      =>
6035                               The_Parent (The_Parent'First .. The_Parent_Last),
6036                              Resolve_Links  => False,
6037                              Case_Sensitive => True);
6038
6039                Canonical_Path : constant String :=
6040                                   Normalize_Pathname
6041                                     (Normed,
6042                                      Directory      =>
6043                                        The_Parent
6044                                          (The_Parent'First .. The_Parent_Last),
6045                                      Resolve_Links  =>
6046                                         Opt.Follow_Links_For_Dirs,
6047                                      Case_Sensitive => False);
6048
6049             begin
6050                Name_Len := Normed'Length;
6051                Name_Buffer (1 .. Name_Len) := Normed;
6052
6053                --  Directories should always end with a directory separator
6054
6055                if Name_Buffer (Name_Len) /= Directory_Separator then
6056                   Add_Char_To_Name_Buffer (Directory_Separator);
6057                end if;
6058
6059                Path.Display_Name := Name_Find;
6060
6061                Name_Len := Canonical_Path'Length;
6062                Name_Buffer (1 .. Name_Len) := Canonical_Path;
6063
6064                if Name_Buffer (Name_Len) /= Directory_Separator then
6065                   Add_Char_To_Name_Buffer (Directory_Separator);
6066                end if;
6067
6068                Path.Name := Name_Find;
6069             end;
6070          end if;
6071
6072          Free (Full_Path_Name);
6073       end;
6074    end Locate_Directory;
6075
6076    ---------------------------
6077    -- Find_Excluded_Sources --
6078    ---------------------------
6079
6080    procedure Find_Excluded_Sources
6081      (Project : in out Project_Processing_Data;
6082       Data    : in out Tree_Processing_Data)
6083    is
6084       Excluded_Source_List_File : constant Variable_Value :=
6085                                     Util.Value_Of
6086                                       (Name_Excluded_Source_List_File,
6087                                        Project.Project.Decl.Attributes,
6088                                        Data.Tree);
6089       Excluded_Sources          : Variable_Value := Util.Value_Of
6090                                     (Name_Excluded_Source_Files,
6091                                      Project.Project.Decl.Attributes,
6092                                      Data.Tree);
6093
6094       Current         : String_List_Id;
6095       Element         : String_Element;
6096       Location        : Source_Ptr;
6097       Name            : File_Name_Type;
6098       File            : Prj.Util.Text_File;
6099       Line            : String (1 .. 300);
6100       Last            : Natural;
6101       Locally_Removed : Boolean := False;
6102
6103    begin
6104       --  If Excluded_Source_Files is not declared, check Locally_Removed_Files
6105
6106       if Excluded_Sources.Default then
6107          Locally_Removed := True;
6108          Excluded_Sources :=
6109            Util.Value_Of
6110              (Name_Locally_Removed_Files,
6111               Project.Project.Decl.Attributes, Data.Tree);
6112       end if;
6113
6114       --  If there are excluded sources, put them in the table
6115
6116       if not Excluded_Sources.Default then
6117          if not Excluded_Source_List_File.Default then
6118             if Locally_Removed then
6119                Error_Msg
6120                  (Data.Flags,
6121                   "?both attributes Locally_Removed_Files and " &
6122                   "Excluded_Source_List_File are present",
6123                   Excluded_Source_List_File.Location, Project.Project);
6124             else
6125                Error_Msg
6126                  (Data.Flags,
6127                   "?both attributes Excluded_Source_Files and " &
6128                   "Excluded_Source_List_File are present",
6129                   Excluded_Source_List_File.Location, Project.Project);
6130             end if;
6131          end if;
6132
6133          Current := Excluded_Sources.Values;
6134          while Current /= Nil_String loop
6135             Element := Data.Tree.String_Elements.Table (Current);
6136             Name := Canonical_Case_File_Name (Element.Value);
6137
6138             --  If the element has no location, then use the location of
6139             --  Excluded_Sources to report possible errors.
6140
6141             if Element.Location = No_Location then
6142                Location := Excluded_Sources.Location;
6143             else
6144                Location := Element.Location;
6145             end if;
6146
6147             Excluded_Sources_Htable.Set
6148               (Project.Excluded, Name, (Name, False, Location));
6149             Current := Element.Next;
6150          end loop;
6151
6152       elsif not Excluded_Source_List_File.Default then
6153          Location := Excluded_Source_List_File.Location;
6154
6155          declare
6156             Source_File_Path_Name : constant String :=
6157                                       Path_Name_Of
6158                                         (File_Name_Type
6159                                            (Excluded_Source_List_File.Value),
6160                                          Project.Project.Directory.Name);
6161
6162          begin
6163             if Source_File_Path_Name'Length = 0 then
6164                Err_Vars.Error_Msg_File_1 :=
6165                  File_Name_Type (Excluded_Source_List_File.Value);
6166                Error_Msg
6167                  (Data.Flags,
6168                   "file with excluded sources { does not exist",
6169                   Excluded_Source_List_File.Location, Project.Project);
6170
6171             else
6172                --  Open the file
6173
6174                Prj.Util.Open (File, Source_File_Path_Name);
6175
6176                if not Prj.Util.Is_Valid (File) then
6177                   Error_Msg
6178                     (Data.Flags, "file does not exist",
6179                      Location, Project.Project);
6180                else
6181                   --  Read the lines one by one
6182
6183                   while not Prj.Util.End_Of_File (File) loop
6184                      Prj.Util.Get_Line (File, Line, Last);
6185
6186                      --  Non empty, non comment line should contain a file name
6187
6188                      if Last /= 0
6189                        and then (Last = 1 or else Line (1 .. 2) /= "--")
6190                      then
6191                         Name_Len := Last;
6192                         Name_Buffer (1 .. Name_Len) := Line (1 .. Last);
6193                         Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
6194                         Name := Name_Find;
6195
6196                         --  Check that there is no directory information
6197
6198                         for J in 1 .. Last loop
6199                            if Line (J) = '/'
6200                              or else Line (J) = Directory_Separator
6201                            then
6202                               Error_Msg_File_1 := Name;
6203                               Error_Msg
6204                                 (Data.Flags,
6205                                  "file name cannot include " &
6206                                  "directory information ({)",
6207                                  Location, Project.Project);
6208                               exit;
6209                            end if;
6210                         end loop;
6211
6212                         Excluded_Sources_Htable.Set
6213                           (Project.Excluded, Name, (Name, False, Location));
6214                      end if;
6215                   end loop;
6216
6217                   Prj.Util.Close (File);
6218                end if;
6219             end if;
6220          end;
6221       end if;
6222    end Find_Excluded_Sources;
6223
6224    ------------------
6225    -- Find_Sources --
6226    ------------------
6227
6228    procedure Find_Sources
6229      (Project   : in out Project_Processing_Data;
6230       Data      : in out Tree_Processing_Data)
6231    is
6232       Sources : constant Variable_Value :=
6233                   Util.Value_Of
6234                     (Name_Source_Files,
6235                     Project.Project.Decl.Attributes,
6236                     Data.Tree);
6237
6238       Source_List_File : constant Variable_Value :=
6239                            Util.Value_Of
6240                              (Name_Source_List_File,
6241                               Project.Project.Decl.Attributes,
6242                               Data.Tree);
6243
6244       Name_Loc             : Name_Location;
6245       Has_Explicit_Sources : Boolean;
6246
6247    begin
6248       pragma Assert (Sources.Kind = List, "Source_Files is not a list");
6249       pragma Assert
6250         (Source_List_File.Kind = Single,
6251          "Source_List_File is not a single string");
6252
6253       Project.Source_List_File_Location := Source_List_File.Location;
6254
6255       --  If the user has specified a Source_Files attribute
6256
6257       if not Sources.Default then
6258          if not Source_List_File.Default then
6259             Error_Msg
6260               (Data.Flags,
6261                "?both attributes source_files and " &
6262                "source_list_file are present",
6263                Source_List_File.Location, Project.Project);
6264          end if;
6265
6266          --  Sources is a list of file names
6267
6268          declare
6269             Current  : String_List_Id := Sources.Values;
6270             Element  : String_Element;
6271             Location : Source_Ptr;
6272             Name     : File_Name_Type;
6273
6274          begin
6275             if Current = Nil_String then
6276                Project.Project.Languages := No_Language_Index;
6277
6278                --  This project contains no source. For projects that don't
6279                --  extend other projects, this also means that there is no
6280                --  need for an object directory, if not specified.
6281
6282                if Project.Project.Extends = No_Project
6283                  and then Project.Project.Object_Directory =
6284                    Project.Project.Directory
6285                then
6286                   Project.Project.Object_Directory := No_Path_Information;
6287                end if;
6288             end if;
6289
6290             while Current /= Nil_String loop
6291                Element := Data.Tree.String_Elements.Table (Current);
6292                Name := Canonical_Case_File_Name (Element.Value);
6293                Get_Name_String (Element.Value);
6294
6295                --  If the element has no location, then use the location of
6296                --  Sources to report possible errors.
6297
6298                if Element.Location = No_Location then
6299                   Location := Sources.Location;
6300                else
6301                   Location := Element.Location;
6302                end if;
6303
6304                --  Check that there is no directory information
6305
6306                for J in 1 .. Name_Len loop
6307                   if Name_Buffer (J) = '/'
6308                     or else Name_Buffer (J) = Directory_Separator
6309                   then
6310                      Error_Msg_File_1 := Name;
6311                      Error_Msg
6312                        (Data.Flags,
6313                         "file name cannot include directory " &
6314                         "information ({)",
6315                         Location, Project.Project);
6316                      exit;
6317                   end if;
6318                end loop;
6319
6320                --  Check whether the file is already there: the same file name
6321                --  may be in the list. If the source is missing, the error will
6322                --  be on the first mention of the source file name.
6323
6324                Name_Loc := Source_Names_Htable.Get
6325                  (Project.Source_Names, Name);
6326
6327                if Name_Loc = No_Name_Location then
6328                   Name_Loc :=
6329                     (Name     => Name,
6330                      Location => Location,
6331                      Source   => No_Source,
6332                      Found    => False);
6333                   Source_Names_Htable.Set
6334                     (Project.Source_Names, Name, Name_Loc);
6335                end if;
6336
6337                Current := Element.Next;
6338             end loop;
6339
6340             Has_Explicit_Sources := True;
6341          end;
6342
6343          --  If we have no Source_Files attribute, check the Source_List_File
6344          --  attribute.
6345
6346       elsif not Source_List_File.Default then
6347
6348          --  Source_List_File is the name of the file that contains the source
6349          --  file names.
6350
6351          declare
6352             Source_File_Path_Name : constant String :=
6353               Path_Name_Of
6354                 (File_Name_Type (Source_List_File.Value),
6355                  Project.Project.Directory.Name);
6356
6357          begin
6358             Has_Explicit_Sources := True;
6359
6360             if Source_File_Path_Name'Length = 0 then
6361                Err_Vars.Error_Msg_File_1 :=
6362                  File_Name_Type (Source_List_File.Value);
6363                Error_Msg
6364                  (Data.Flags,
6365                   "file with sources { does not exist",
6366                   Source_List_File.Location, Project.Project);
6367
6368             else
6369                Get_Sources_From_File
6370                  (Source_File_Path_Name, Source_List_File.Location,
6371                   Project, Data);
6372             end if;
6373          end;
6374
6375       else
6376          --  Neither Source_Files nor Source_List_File has been specified. Find
6377          --  all the files that satisfy the naming scheme in all the source
6378          --  directories.
6379
6380          Has_Explicit_Sources := False;
6381       end if;
6382
6383       Search_Directories
6384         (Project,
6385          Data            => Data,
6386          For_All_Sources => Sources.Default and then Source_List_File.Default);
6387
6388       --  Check if all exceptions have been found
6389
6390       declare
6391          Source : Source_Id;
6392          Iter   : Source_Iterator;
6393
6394       begin
6395          Iter := For_Each_Source (Data.Tree, Project.Project);
6396          loop
6397             Source := Prj.Element (Iter);
6398             exit when Source = No_Source;
6399
6400             if Source.Naming_Exception
6401               and then Source.Path = No_Path_Information
6402             then
6403                if Source.Unit /= No_Unit_Index then
6404
6405                   --  For multi-unit source files, source_id gets duplicated
6406                   --  once for every unit. Only the first source_id got its
6407                   --  full path set. So if it isn't set for that first one,
6408                   --  the file wasn't found. Otherwise we need to update for
6409                   --  units after the first one.
6410
6411                   if Source.Index = 0
6412                     or else Source.Index = 1
6413                   then
6414                      Error_Msg_Name_1 := Name_Id (Source.Display_File);
6415                      Error_Msg_Name_2 := Name_Id (Source.Unit.Name);
6416                      Error_Msg
6417                        (Data.Flags,
6418                         "source file %% for unit %% not found",
6419                         No_Location, Project.Project);
6420
6421                   else
6422                      Source.Path := Files_Htable.Get
6423                        (Data.File_To_Source, Source.File).Path;
6424
6425                      if Current_Verbosity = High then
6426                         if Source.Path /= No_Path_Information then
6427                            Write_Line ("Setting full path for "
6428                                        & Get_Name_String (Source.File)
6429                                        & " at" & Source.Index'Img
6430                                        & " to "
6431                                        & Get_Name_String (Source.Path.Name));
6432                         end if;
6433                      end if;
6434                   end if;
6435                end if;
6436
6437                if Source.Path = No_Path_Information then
6438                   Remove_Source (Source, No_Source);
6439                end if;
6440             end if;
6441
6442             Next (Iter);
6443          end loop;
6444       end;
6445
6446       --  It is an error if a source file name in a source list or in a source
6447       --  list file is not found.
6448
6449       if Has_Explicit_Sources then
6450          declare
6451             NL          : Name_Location;
6452             First_Error : Boolean;
6453
6454          begin
6455             NL := Source_Names_Htable.Get_First (Project.Source_Names);
6456             First_Error := True;
6457             while NL /= No_Name_Location loop
6458                if not NL.Found then
6459                   Err_Vars.Error_Msg_File_1 := NL.Name;
6460
6461                   if First_Error then
6462                      Error_Msg
6463                        (Data.Flags,
6464                         "source file { not found",
6465                         NL.Location, Project.Project);
6466                      First_Error := False;
6467
6468                   else
6469                      Error_Msg
6470                        (Data.Flags,
6471                         "\source file { not found",
6472                         NL.Location, Project.Project);
6473                   end if;
6474                end if;
6475
6476                NL := Source_Names_Htable.Get_Next (Project.Source_Names);
6477             end loop;
6478          end;
6479       end if;
6480    end Find_Sources;
6481
6482    ----------------
6483    -- Initialize --
6484    ----------------
6485
6486    procedure Initialize
6487      (Data  : out Tree_Processing_Data;
6488       Tree  : Project_Tree_Ref;
6489       Flags : Prj.Processing_Flags)
6490    is
6491    begin
6492       Files_Htable.Reset (Data.File_To_Source);
6493       Data.Tree  := Tree;
6494       Data.Flags := Flags;
6495    end Initialize;
6496
6497    ----------
6498    -- Free --
6499    ----------
6500
6501    procedure Free (Data : in out Tree_Processing_Data) is
6502    begin
6503       Files_Htable.Reset (Data.File_To_Source);
6504    end Free;
6505
6506    ----------------
6507    -- Initialize --
6508    ----------------
6509
6510    procedure Initialize
6511      (Data    : in out Project_Processing_Data;
6512       Project : Project_Id)
6513    is
6514    begin
6515       Data.Project := Project;
6516    end Initialize;
6517
6518    ----------
6519    -- Free --
6520    ----------
6521
6522    procedure Free (Data : in out Project_Processing_Data) is
6523    begin
6524       Source_Names_Htable.Reset      (Data.Source_Names);
6525       Unit_Exceptions_Htable.Reset   (Data.Unit_Exceptions);
6526       Excluded_Sources_Htable.Reset  (Data.Excluded);
6527    end Free;
6528
6529    -------------------------------
6530    -- Check_File_Naming_Schemes --
6531    -------------------------------
6532
6533    procedure Check_File_Naming_Schemes
6534      (In_Tree               : Project_Tree_Ref;
6535       Project               : Project_Processing_Data;
6536       File_Name             : File_Name_Type;
6537       Alternate_Languages   : out Language_List;
6538       Language              : out Language_Ptr;
6539       Display_Language_Name : out Name_Id;
6540       Unit                  : out Name_Id;
6541       Lang_Kind             : out Language_Kind;
6542       Kind                  : out Source_Kind)
6543    is
6544       Filename : constant String := Get_Name_String (File_Name);
6545       Config   : Language_Config;
6546       Tmp_Lang : Language_Ptr;
6547
6548       Header_File : Boolean := False;
6549       --  True if we found at least one language for which the file is a header
6550       --  In such a case, we search for all possible languages where this is
6551       --  also a header (C and C++ for instance), since the file might be used
6552       --  for several such languages.
6553
6554       procedure Check_File_Based_Lang;
6555       --  Does the naming scheme test for file-based languages. For those,
6556       --  there is no Unit. Just check if the file name has the implementation
6557       --  or, if it is specified, the template suffix of the language.
6558       --
6559       --  Returns True if the file belongs to the current language and we
6560       --  should stop searching for matching languages. Not that a given header
6561       --  file could belong to several languages (C and C++ for instance). Thus
6562       --  if we found a header we'll check whether it matches other languages.
6563
6564       ---------------------------
6565       -- Check_File_Based_Lang --
6566       ---------------------------
6567
6568       procedure Check_File_Based_Lang is
6569       begin
6570          if not Header_File
6571            and then Suffix_Matches (Filename, Config.Naming_Data.Body_Suffix)
6572          then
6573             Unit     := No_Name;
6574             Kind     := Impl;
6575             Language := Tmp_Lang;
6576
6577             if Current_Verbosity = High then
6578                Write_Str ("     implementation of language ");
6579                Write_Line (Get_Name_String (Display_Language_Name));
6580             end if;
6581
6582          elsif Suffix_Matches (Filename, Config.Naming_Data.Spec_Suffix) then
6583             if Current_Verbosity = High then
6584                Write_Str ("     header of language ");
6585                Write_Line (Get_Name_String (Display_Language_Name));
6586             end if;
6587
6588             if Header_File then
6589                Alternate_Languages := new Language_List_Element'
6590                  (Language => Language,
6591                   Next     => Alternate_Languages);
6592
6593             else
6594                Header_File := True;
6595                Kind        := Spec;
6596                Unit        := No_Name;
6597                Language    := Tmp_Lang;
6598             end if;
6599          end if;
6600       end Check_File_Based_Lang;
6601
6602    --  Start of processing for Check_File_Naming_Schemes
6603
6604    begin
6605       Language              := No_Language_Index;
6606       Alternate_Languages   := null;
6607       Display_Language_Name := No_Name;
6608       Unit                  := No_Name;
6609       Lang_Kind             := File_Based;
6610       Kind                  := Spec;
6611
6612       Tmp_Lang := Project.Project.Languages;
6613       while Tmp_Lang /= No_Language_Index loop
6614          if Current_Verbosity = High then
6615             Write_Line
6616               ("     Testing language "
6617                & Get_Name_String (Tmp_Lang.Name)
6618                & " Header_File=" & Header_File'Img);
6619          end if;
6620
6621          Display_Language_Name := Tmp_Lang.Display_Name;
6622          Config := Tmp_Lang.Config;
6623          Lang_Kind := Config.Kind;
6624
6625          case Config.Kind is
6626             when File_Based =>
6627                Check_File_Based_Lang;
6628                exit when Kind = Impl;
6629
6630             when Unit_Based =>
6631
6632                --  We know it belongs to a least a file_based language, no
6633                --  need to check unit-based ones.
6634
6635                if not Header_File then
6636                   Compute_Unit_Name
6637                     (File_Name       => File_Name,
6638                      Naming          => Config.Naming_Data,
6639                      Kind            => Kind,
6640                      Unit            => Unit,
6641                      Project         => Project,
6642                      In_Tree         => In_Tree);
6643
6644                   if Unit /= No_Name then
6645                      Language    := Tmp_Lang;
6646                      exit;
6647                   end if;
6648                end if;
6649          end case;
6650
6651          Tmp_Lang := Tmp_Lang.Next;
6652       end loop;
6653
6654       if Language = No_Language_Index
6655         and then Current_Verbosity = High
6656       then
6657          Write_Line ("     not a source of any language");
6658       end if;
6659    end Check_File_Naming_Schemes;
6660
6661    -------------------
6662    -- Override_Kind --
6663    -------------------
6664
6665    procedure Override_Kind (Source : Source_Id; Kind : Source_Kind) is
6666    begin
6667       --  If the file was previously already associated with a unit, change it
6668
6669       if Source.Unit /= null
6670         and then Source.Kind in Spec_Or_Body
6671         and then Source.Unit.File_Names (Source.Kind) /= null
6672       then
6673          --  If we had another file referencing the same unit (for instance it
6674          --  was in an extended project), that source file is in fact invisible
6675          --  from now on, and in particular doesn't belong to the same unit.
6676
6677          if Source.Unit.File_Names (Source.Kind) /= Source then
6678             Source.Unit.File_Names (Source.Kind).Unit := No_Unit_Index;
6679          end if;
6680
6681          Source.Unit.File_Names (Source.Kind) := null;
6682       end if;
6683
6684       Source.Kind := Kind;
6685
6686       if Current_Verbosity = High
6687         and then Source.File /= No_File
6688       then
6689          Write_Line ("Override kind for "
6690                      & Get_Name_String (Source.File)
6691                      & " kind=" & Source.Kind'Img);
6692       end if;
6693
6694       if Source.Kind in Spec_Or_Body and then Source.Unit /= null then
6695          Source.Unit.File_Names (Source.Kind) := Source;
6696       end if;
6697    end Override_Kind;
6698
6699    ----------------
6700    -- Check_File --
6701    ----------------
6702
6703    procedure Check_File
6704      (Project           : in out Project_Processing_Data;
6705       Data              : in out Tree_Processing_Data;
6706       Source_Dir_Rank   : Natural;
6707       Path              : Path_Name_Type;
6708       File_Name         : File_Name_Type;
6709       Display_File_Name : File_Name_Type;
6710       Locally_Removed   : Boolean;
6711       For_All_Sources   : Boolean)
6712    is
6713       Canonical_Path : constant Path_Name_Type :=
6714                          Path_Name_Type
6715                            (Canonical_Case_File_Name (Name_Id (Path)));
6716
6717       Name_Loc              : Name_Location :=
6718                                 Source_Names_Htable.Get
6719                                   (Project.Source_Names, File_Name);
6720       Check_Name            : Boolean := False;
6721       Alternate_Languages   : Language_List;
6722       Language              : Language_Ptr;
6723       Source                : Source_Id;
6724       Src_Ind               : Source_File_Index;
6725       Unit                  : Name_Id;
6726       Display_Language_Name : Name_Id;
6727       Lang_Kind             : Language_Kind;
6728       Kind                  : Source_Kind := Spec;
6729
6730    begin
6731       if Current_Verbosity = High then
6732          Write_Line ("Checking file:");
6733          Write_Str ("   Path = ");
6734          Write_Line (Get_Name_String (Path));
6735          Write_Str ("   Rank =");
6736          Write_Line (Source_Dir_Rank'Img);
6737       end if;
6738
6739       if Name_Loc = No_Name_Location then
6740          Check_Name := For_All_Sources;
6741
6742       else
6743          if Name_Loc.Found then
6744
6745             --  Check if it is OK to have the same file name in several
6746             --  source directories.
6747
6748             if Source_Dir_Rank = Name_Loc.Source.Source_Dir_Rank then
6749                Error_Msg_File_1 := File_Name;
6750                Error_Msg
6751                  (Data.Flags,
6752                   "{ is found in several source directories",
6753                   Name_Loc.Location, Project.Project);
6754             end if;
6755
6756          else
6757             Name_Loc.Found := True;
6758
6759             Source_Names_Htable.Set
6760               (Project.Source_Names, File_Name, Name_Loc);
6761
6762             if Name_Loc.Source = No_Source then
6763                Check_Name := True;
6764
6765             else
6766                Name_Loc.Source.Path := (Canonical_Path, Path);
6767
6768                Source_Paths_Htable.Set
6769                  (Data.Tree.Source_Paths_HT,
6770                   Canonical_Path,
6771                   Name_Loc.Source);
6772
6773                --  Check if this is a subunit
6774
6775                if Name_Loc.Source.Unit /= No_Unit_Index
6776                  and then Name_Loc.Source.Kind = Impl
6777                then
6778                   Src_Ind := Sinput.P.Load_Project_File
6779                     (Get_Name_String (Canonical_Path));
6780
6781                   if Sinput.P.Source_File_Is_Subunit (Src_Ind) then
6782                      Override_Kind (Name_Loc.Source, Sep);
6783                   end if;
6784                end if;
6785
6786                Files_Htable.Set
6787                  (Data.File_To_Source, File_Name, Name_Loc.Source);
6788             end if;
6789          end if;
6790       end if;
6791
6792       if Check_Name then
6793          Check_File_Naming_Schemes
6794            (In_Tree               => Data.Tree,
6795             Project               => Project,
6796             File_Name             => File_Name,
6797             Alternate_Languages   => Alternate_Languages,
6798             Language              => Language,
6799             Display_Language_Name => Display_Language_Name,
6800             Unit                  => Unit,
6801             Lang_Kind             => Lang_Kind,
6802             Kind                  => Kind);
6803
6804          if Language = No_Language_Index then
6805
6806             --  A file name in a list must be a source of a language
6807
6808             if Data.Flags.Error_On_Unknown_Language
6809               and then Name_Loc.Found
6810             then
6811                Error_Msg_File_1 := File_Name;
6812                Error_Msg
6813                  (Data.Flags,
6814                   "language unknown for {",
6815                   Name_Loc.Location, Project.Project);
6816             end if;
6817
6818          else
6819             Add_Source
6820               (Id                  => Source,
6821                Project             => Project.Project,
6822                Source_Dir_Rank     => Source_Dir_Rank,
6823                Lang_Id             => Language,
6824                Kind                => Kind,
6825                Data                => Data,
6826                Alternate_Languages => Alternate_Languages,
6827                File_Name           => File_Name,
6828                Display_File        => Display_File_Name,
6829                Unit                => Unit,
6830                Locally_Removed     => Locally_Removed,
6831                Path                => (Canonical_Path, Path));
6832
6833             --  If it is a source specified in a list, update the entry in
6834             --  the Source_Names table.
6835
6836             if Name_Loc.Found and then Name_Loc.Source = No_Source then
6837                Name_Loc.Source := Source;
6838                Source_Names_Htable.Set
6839                  (Project.Source_Names, File_Name, Name_Loc);
6840             end if;
6841          end if;
6842       end if;
6843    end Check_File;
6844
6845    ------------------------
6846    -- Search_Directories --
6847    ------------------------
6848
6849    procedure Search_Directories
6850      (Project         : in out Project_Processing_Data;
6851       Data            : in out Tree_Processing_Data;
6852       For_All_Sources : Boolean)
6853    is
6854       Source_Dir        : String_List_Id;
6855       Element           : String_Element;
6856       Src_Dir_Rank      : Number_List_Index;
6857       Num_Nod           : Number_Node;
6858       Dir               : Dir_Type;
6859       Name              : String (1 .. 1_000);
6860       Last              : Natural;
6861       File_Name         : File_Name_Type;
6862       Display_File_Name : File_Name_Type;
6863
6864    begin
6865       if Current_Verbosity = High then
6866          Write_Line ("Looking for sources:");
6867       end if;
6868
6869       --  Loop through subdirectories
6870
6871       Source_Dir := Project.Project.Source_Dirs;
6872       Src_Dir_Rank := Project.Project.Source_Dir_Ranks;
6873       while Source_Dir /= Nil_String loop
6874          begin
6875             Num_Nod := Data.Tree.Number_Lists.Table (Src_Dir_Rank);
6876             Element := Data.Tree.String_Elements.Table (Source_Dir);
6877
6878             if Element.Value /= No_Name then
6879                Get_Name_String (Element.Display_Value);
6880
6881                if Current_Verbosity = High then
6882                   Write_Str ("Directory: ");
6883                   Write_Str (Name_Buffer (1 .. Name_Len));
6884                   Write_Line (Num_Nod.Number'Img);
6885                end if;
6886
6887                declare
6888                   Source_Directory : constant String :=
6889                                        Name_Buffer (1 .. Name_Len) &
6890                                          Directory_Separator;
6891
6892                   Dir_Last : constant Natural :=
6893                                        Compute_Directory_Last
6894                                          (Source_Directory);
6895
6896                begin
6897                   if Current_Verbosity = High then
6898                      Write_Attr ("Source_Dir", Source_Directory);
6899                   end if;
6900
6901                   --  We look to every entry in the source directory
6902
6903                   Open (Dir, Source_Directory);
6904
6905                   loop
6906                      Read (Dir, Name, Last);
6907
6908                      exit when Last = 0;
6909
6910                      --  In fast project loading mode (without -eL), the user
6911                      --  guarantees that no directory has a name which is a
6912                      --  valid source name, so we can avoid doing a system call
6913                      --  here. This provides a very significant speed up on
6914                      --  slow file systems (remote files for instance).
6915
6916                      if not Opt.Follow_Links_For_Files
6917                        or else Is_Regular_File
6918                                  (Source_Directory & Name (1 .. Last))
6919                      then
6920                         if Current_Verbosity = High then
6921                            Write_Str  ("   Checking ");
6922                            Write_Line (Name (1 .. Last));
6923                         end if;
6924
6925                         Name_Len := Last;
6926                         Name_Buffer (1 .. Name_Len) := Name (1 .. Last);
6927                         Display_File_Name := Name_Find;
6928
6929                         if Osint.File_Names_Case_Sensitive then
6930                            File_Name := Display_File_Name;
6931                         else
6932                            Canonical_Case_File_Name
6933                              (Name_Buffer (1 .. Name_Len));
6934                            File_Name := Name_Find;
6935                         end if;
6936
6937                         declare
6938                            Path_Name : constant String :=
6939                                          Normalize_Pathname
6940                                            (Name (1 .. Last),
6941                                             Directory       =>
6942                                               Source_Directory
6943                                                 (Source_Directory'First ..
6944                                                  Dir_Last),
6945                                             Resolve_Links   =>
6946                                               Opt.Follow_Links_For_Files,
6947                                             Case_Sensitive => True);
6948                            --  Case_Sensitive set True (no folding)
6949
6950                            Path : Path_Name_Type;
6951                            FF   : File_Found := Excluded_Sources_Htable.Get
6952                                                  (Project.Excluded, File_Name);
6953                            To_Remove : Boolean := False;
6954
6955                         begin
6956                            Name_Len := Path_Name'Length;
6957                            Name_Buffer (1 .. Name_Len) := Path_Name;
6958                            Path := Name_Find;
6959
6960                            if FF /= No_File_Found then
6961                               if not FF.Found then
6962                                  FF.Found := True;
6963                                  Excluded_Sources_Htable.Set
6964                                    (Project.Excluded, File_Name, FF);
6965
6966                                  if Current_Verbosity = High then
6967                                     Write_Str ("     excluded source """);
6968                                     Write_Str (Get_Name_String (File_Name));
6969                                     Write_Line ("""");
6970                                  end if;
6971
6972                                  --  Will mark the file as removed, but we
6973                                  --  still need to add it to the list: if we
6974                                  --  don't, the file will not appear in the
6975                                  --  mapping file and will cause the compiler
6976                                  --  to fail.
6977
6978                                  To_Remove := True;
6979                               end if;
6980                            end if;
6981
6982                            Check_File
6983                              (Project           => Project,
6984                               Source_Dir_Rank   => Num_Nod.Number,
6985                               Data              => Data,
6986                               Path              => Path,
6987                               File_Name         => File_Name,
6988                               Locally_Removed   => To_Remove,
6989                               Display_File_Name => Display_File_Name,
6990                               For_All_Sources   => For_All_Sources);
6991                         end;
6992                      end if;
6993                   end loop;
6994
6995                   Close (Dir);
6996                end;
6997             end if;
6998
6999          exception
7000             when Directory_Error =>
7001                null;
7002          end;
7003
7004          Source_Dir := Element.Next;
7005          Src_Dir_Rank := Num_Nod.Next;
7006       end loop;
7007
7008       if Current_Verbosity = High then
7009          Write_Line ("end Looking for sources.");
7010       end if;
7011    end Search_Directories;
7012
7013    ----------------------------
7014    -- Load_Naming_Exceptions --
7015    ----------------------------
7016
7017    procedure Load_Naming_Exceptions
7018      (Project : in out Project_Processing_Data;
7019       Data    : in out Tree_Processing_Data)
7020    is
7021       Source : Source_Id;
7022       Iter   : Source_Iterator;
7023
7024    begin
7025       Iter := For_Each_Source (Data.Tree, Project.Project);
7026       loop
7027          Source := Prj.Element (Iter);
7028          exit when Source = No_Source;
7029
7030          --  An excluded file cannot also be an exception file name
7031
7032          if Excluded_Sources_Htable.Get (Project.Excluded, Source.File) /=
7033                                                                  No_File_Found
7034          then
7035             Error_Msg_File_1 := Source.File;
7036             Error_Msg
7037               (Data.Flags,
7038                "{ cannot be both excluded and an exception file name",
7039                No_Location, Project.Project);
7040          end if;
7041
7042          if Current_Verbosity = High then
7043             Write_Str ("Naming exception: Putting source file ");
7044             Write_Str (Get_Name_String (Source.File));
7045             Write_Line (" in Source_Names");
7046          end if;
7047
7048          Source_Names_Htable.Set
7049            (Project.Source_Names,
7050             K => Source.File,
7051             E => Name_Location'
7052                   (Name     => Source.File,
7053                    Location => No_Location,
7054                    Source   => Source,
7055                    Found    => False));
7056
7057          --  If this is an Ada exception, record in table Unit_Exceptions
7058
7059          if Source.Unit /= No_Unit_Index then
7060             declare
7061                Unit_Except : Unit_Exception :=
7062                  Unit_Exceptions_Htable.Get
7063                    (Project.Unit_Exceptions, Source.Unit.Name);
7064
7065             begin
7066                Unit_Except.Name := Source.Unit.Name;
7067
7068                if Source.Kind = Spec then
7069                   Unit_Except.Spec := Source.File;
7070                else
7071                   Unit_Except.Impl := Source.File;
7072                end if;
7073
7074                Unit_Exceptions_Htable.Set
7075                  (Project.Unit_Exceptions, Source.Unit.Name, Unit_Except);
7076             end;
7077          end if;
7078
7079          Next (Iter);
7080       end loop;
7081    end Load_Naming_Exceptions;
7082
7083    ----------------------
7084    -- Look_For_Sources --
7085    ----------------------
7086
7087    procedure Look_For_Sources
7088      (Project : in out Project_Processing_Data;
7089       Data    : in out Tree_Processing_Data)
7090    is
7091       Object_Files : Object_File_Names_Htable.Instance;
7092       Iter : Source_Iterator;
7093       Src  : Source_Id;
7094
7095       procedure Check_Object (Src : Source_Id);
7096       --  Check if object file name of Src is already used in the project tree,
7097       --  and report an error if so.
7098
7099       procedure Check_Object_Files;
7100       --  Check that no two sources of this project have the same object file
7101
7102       procedure Mark_Excluded_Sources;
7103       --  Mark as such the sources that are declared as excluded
7104
7105       ------------------
7106       -- Check_Object --
7107       ------------------
7108
7109       procedure Check_Object (Src : Source_Id) is
7110          Source : Source_Id;
7111
7112       begin
7113          Source := Object_File_Names_Htable.Get (Object_Files, Src.Object);
7114
7115          --  We cannot just check on "Source /= Src", since we might have
7116          --  two different entries for the same file (and since that's
7117          --  the same file it is expected that it has the same object)
7118
7119          if Source /= No_Source
7120            and then Source.Path /= Src.Path
7121          then
7122             Error_Msg_File_1 := Src.File;
7123             Error_Msg_File_2 := Source.File;
7124             Error_Msg
7125               (Data.Flags,
7126                "{ and { have the same object file name",
7127                No_Location, Project.Project);
7128
7129          else
7130             Object_File_Names_Htable.Set (Object_Files, Src.Object, Src);
7131          end if;
7132       end Check_Object;
7133
7134       ---------------------------
7135       -- Mark_Excluded_Sources --
7136       ---------------------------
7137
7138       procedure Mark_Excluded_Sources is
7139          Source   : Source_Id := No_Source;
7140          Excluded : File_Found;
7141          Proj     : Project_Id;
7142
7143       begin
7144          --  Minor optimization: if there are no excluded files, no need to
7145          --  traverse the list of sources. We cannot however also check whether
7146          --  the existing exceptions have ".Found" set to True (indicating we
7147          --  found them before) because we need to do some final processing on
7148          --  them in any case.
7149
7150          if Excluded_Sources_Htable.Get_First (Project.Excluded) /=
7151                                                              No_File_Found
7152          then
7153             Proj := Project.Project;
7154             while Proj /= No_Project loop
7155                Iter := For_Each_Source (Data.Tree, Proj);
7156                while Prj.Element (Iter) /= No_Source loop
7157                   Source   := Prj.Element (Iter);
7158                   Excluded := Excluded_Sources_Htable.Get
7159                     (Project.Excluded, Source.File);
7160
7161                   if Excluded /= No_File_Found then
7162                      Source.Locally_Removed := True;
7163                      Source.In_Interfaces   := False;
7164
7165                      if Current_Verbosity = High then
7166                         Write_Str ("Removing file ");
7167                         Write_Line
7168                           (Get_Name_String (Excluded.File)
7169                            & " " & Get_Name_String (Source.Project.Name));
7170                      end if;
7171
7172                      Excluded_Sources_Htable.Remove
7173                        (Project.Excluded, Source.File);
7174                   end if;
7175
7176                   Next (Iter);
7177                end loop;
7178
7179                Proj := Proj.Extends;
7180             end loop;
7181          end if;
7182
7183          --  If we have any excluded element left, that means we did not find
7184          --  the source file
7185
7186          Excluded := Excluded_Sources_Htable.Get_First (Project.Excluded);
7187          while Excluded /= No_File_Found loop
7188             if not Excluded.Found then
7189
7190                --  Check if the file belongs to another imported project to
7191                --  provide a better error message.
7192
7193                Src := Find_Source
7194                  (In_Tree          => Data.Tree,
7195                   Project          => Project.Project,
7196                   In_Imported_Only => True,
7197                   Base_Name        => Excluded.File);
7198
7199                Err_Vars.Error_Msg_File_1 := Excluded.File;
7200
7201                if Src = No_Source then
7202                   Error_Msg
7203                     (Data.Flags,
7204                      "unknown file {", Excluded.Location, Project.Project);
7205                else
7206                   Error_Msg
7207                     (Data.Flags,
7208                      "cannot remove a source from an imported project: {",
7209                      Excluded.Location, Project.Project);
7210                end if;
7211             end if;
7212
7213             Excluded := Excluded_Sources_Htable.Get_Next (Project.Excluded);
7214          end loop;
7215       end Mark_Excluded_Sources;
7216
7217       ------------------------
7218       -- Check_Object_Files --
7219       ------------------------
7220
7221       procedure Check_Object_Files is
7222          Iter    : Source_Iterator;
7223          Src_Id  : Source_Id;
7224          Src_Ind : Source_File_Index;
7225
7226       begin
7227          Iter := For_Each_Source (Data.Tree);
7228          loop
7229             Src_Id := Prj.Element (Iter);
7230             exit when Src_Id = No_Source;
7231
7232             if Is_Compilable (Src_Id)
7233               and then Src_Id.Language.Config.Object_Generated
7234               and then Is_Extending (Project.Project, Src_Id.Project)
7235             then
7236                if Src_Id.Unit = No_Unit_Index then
7237                   if Src_Id.Kind = Impl then
7238                      Check_Object (Src_Id);
7239                   end if;
7240
7241                else
7242                   case Src_Id.Kind is
7243                      when Spec =>
7244                         if Other_Part (Src_Id) = No_Source then
7245                            Check_Object (Src_Id);
7246                         end if;
7247
7248                      when Sep =>
7249                         null;
7250
7251                      when Impl =>
7252                         if Other_Part (Src_Id) /= No_Source then
7253                            Check_Object (Src_Id);
7254
7255                         else
7256                            --  Check if it is a subunit
7257
7258                            Src_Ind :=
7259                              Sinput.P.Load_Project_File
7260                                (Get_Name_String (Src_Id.Path.Name));
7261
7262                            if Sinput.P.Source_File_Is_Subunit (Src_Ind) then
7263                               Override_Kind (Src_Id, Sep);
7264                            else
7265                               Check_Object (Src_Id);
7266                            end if;
7267                         end if;
7268                   end case;
7269                end if;
7270             end if;
7271
7272             Next (Iter);
7273          end loop;
7274       end Check_Object_Files;
7275
7276    --  Start of processing for Look_For_Sources
7277
7278    begin
7279       Find_Excluded_Sources (Project, Data);
7280
7281       if Project.Project.Languages /= No_Language_Index then
7282          Load_Naming_Exceptions (Project, Data);
7283          Find_Sources (Project, Data);
7284          Mark_Excluded_Sources;
7285          Check_Object_Files;
7286       end if;
7287
7288       Object_File_Names_Htable.Reset (Object_Files);
7289    end Look_For_Sources;
7290
7291    ------------------
7292    -- Path_Name_Of --
7293    ------------------
7294
7295    function Path_Name_Of
7296      (File_Name : File_Name_Type;
7297       Directory : Path_Name_Type) return String
7298    is
7299       Result        : String_Access;
7300       The_Directory : constant String := Get_Name_String (Directory);
7301
7302    begin
7303       Get_Name_String (File_Name);
7304       Result :=
7305         Locate_Regular_File
7306           (File_Name => Name_Buffer (1 .. Name_Len),
7307            Path      => The_Directory);
7308
7309       if Result = null then
7310          return "";
7311       else
7312          declare
7313             R : String := Result.all;
7314          begin
7315             Free (Result);
7316             Canonical_Case_File_Name (R);
7317             return R;
7318          end;
7319       end if;
7320    end Path_Name_Of;
7321
7322    -------------------
7323    -- Remove_Source --
7324    -------------------
7325
7326    procedure Remove_Source
7327      (Id          : Source_Id;
7328       Replaced_By : Source_Id)
7329    is
7330       Source : Source_Id;
7331
7332    begin
7333       if Current_Verbosity = High then
7334          Write_Str ("Removing source ");
7335          Write_Str (Get_Name_String (Id.File));
7336
7337          if Id.Index /= 0 then
7338             Write_Str (" at" & Id.Index'Img);
7339          end if;
7340
7341          Write_Eol;
7342       end if;
7343
7344       if Replaced_By /= No_Source then
7345          Id.Replaced_By := Replaced_By;
7346          Replaced_By.Declared_In_Interfaces := Id.Declared_In_Interfaces;
7347       end if;
7348
7349       Id.In_Interfaces := False;
7350       Id.Locally_Removed := True;
7351
7352       --  ??? Should we remove the source from the unit ? The file is not used,
7353       --  so probably should not be referenced from the unit. On the other hand
7354       --  it might give useful additional info
7355       --        if Id.Unit /= null then
7356       --           Id.Unit.File_Names (Id.Kind) := null;
7357       --        end if;
7358
7359       Source := Id.Language.First_Source;
7360
7361       if Source = Id then
7362          Id.Language.First_Source := Id.Next_In_Lang;
7363
7364       else
7365          while Source.Next_In_Lang /= Id loop
7366             Source := Source.Next_In_Lang;
7367          end loop;
7368
7369          Source.Next_In_Lang := Id.Next_In_Lang;
7370       end if;
7371    end Remove_Source;
7372
7373    -----------------------
7374    -- Report_No_Sources --
7375    -----------------------
7376
7377    procedure Report_No_Sources
7378      (Project      : Project_Id;
7379       Lang_Name    : String;
7380       Data         : Tree_Processing_Data;
7381       Location     : Source_Ptr;
7382       Continuation : Boolean := False)
7383    is
7384    begin
7385       case Data.Flags.When_No_Sources is
7386          when Silent =>
7387             null;
7388
7389          when Warning | Error =>
7390             declare
7391                Msg : constant String :=
7392                        "<there are no " &
7393                        Lang_Name &
7394                        " sources in this project";
7395
7396             begin
7397                Error_Msg_Warn := Data.Flags.When_No_Sources = Warning;
7398
7399                if Continuation then
7400                   Error_Msg (Data.Flags, "\" & Msg, Location, Project);
7401                else
7402                   Error_Msg (Data.Flags, Msg, Location, Project);
7403                end if;
7404             end;
7405       end case;
7406    end Report_No_Sources;
7407
7408    ----------------------
7409    -- Show_Source_Dirs --
7410    ----------------------
7411
7412    procedure Show_Source_Dirs
7413      (Project : Project_Id;
7414       In_Tree : Project_Tree_Ref)
7415    is
7416       Current : String_List_Id;
7417       Element : String_Element;
7418
7419    begin
7420       Write_Line ("Source_Dirs:");
7421
7422       Current := Project.Source_Dirs;
7423       while Current /= Nil_String loop
7424          Element := In_Tree.String_Elements.Table (Current);
7425          Write_Str  ("   ");
7426          Write_Line (Get_Name_String (Element.Value));
7427          Current := Element.Next;
7428       end loop;
7429
7430       Write_Line ("end Source_Dirs.");
7431    end Show_Source_Dirs;
7432
7433    ---------------------------
7434    -- Process_Naming_Scheme --
7435    ---------------------------
7436
7437    procedure Process_Naming_Scheme
7438      (Tree         : Project_Tree_Ref;
7439       Root_Project : Project_Id;
7440       Flags        : Processing_Flags)
7441    is
7442       procedure Recursive_Check
7443         (Project : Project_Id;
7444          Data    : in out Tree_Processing_Data);
7445       --  Check_Naming_Scheme for the project
7446
7447       ---------------------
7448       -- Recursive_Check --
7449       ---------------------
7450
7451       procedure Recursive_Check
7452         (Project : Project_Id;
7453          Data    : in out Tree_Processing_Data)
7454       is
7455       begin
7456          if Verbose_Mode then
7457             Write_Str ("Processing_Naming_Scheme for project """);
7458             Write_Str (Get_Name_String (Project.Name));
7459             Write_Line ("""");
7460          end if;
7461
7462          Prj.Nmsc.Check (Project, Data);
7463       end Recursive_Check;
7464
7465       procedure Check_All_Projects is new
7466         For_Every_Project_Imported (Tree_Processing_Data, Recursive_Check);
7467
7468       Data : Tree_Processing_Data;
7469
7470    --  Start of processing for Process_Naming_Scheme
7471    begin
7472       Initialize (Data, Tree => Tree, Flags => Flags);
7473       Check_All_Projects (Root_Project, Data, Imported_First => True);
7474       Free (Data);
7475    end Process_Naming_Scheme;
7476
7477 end Prj.Nmsc;