-- --
-- B o d y --
-- --
--- Copyright (C) 2002-2006, AdaCore --
+-- Copyright (C) 2002-2007, AdaCore --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
with MLib.Fil; use MLib.Fil;
with MLib.Tgt; use MLib.Tgt;
-
-with Namet; use Namet;
with Opt;
with Osint;
with Output; use Output;
-with GNAT; use GNAT;
+with Interfaces.C.Strings; use Interfaces.C.Strings;
+
+with System;
package body MLib.Utl is
Gcc_Name : constant String := Osint.Program_Name ("gcc").all;
- Gcc_Exec : OS_Lib.String_Access;
+ -- Default value of the "gcc" executable used in procedure Gcc
+
+ Gcc_Exec : String_Access;
+ -- The full path name of the "gcc" executable
+
+ Ar_Name : String_Access;
+ -- The name of the archive builder for the platform, set when procedure Ar
+ -- is called for the first time.
+
+ Ar_Exec : String_Access;
+ -- The full path name of the archive builder
+
+ Ar_Options : String_List_Access;
+ -- The minimum options used when invoking the archive builder
+
+ Ar_Append_Options : String_List_Access;
+ -- The options to be used when invoking the archive builder to add chunks
+ -- of object files, when building the archive in chunks.
- Ar_Name : OS_Lib.String_Access;
- Ar_Exec : OS_Lib.String_Access;
- Ar_Options : OS_Lib.String_List_Access;
+ Opt_Length : Natural := 0;
+ -- The max number of options for the Archive_Builder
- Ranlib_Name : OS_Lib.String_Access;
- Ranlib_Exec : OS_Lib.String_Access := null;
- Ranlib_Options : OS_Lib.String_List_Access := null;
+ Initial_Size : Natural := 0;
+ -- The minimum number of bytes for the invocation of the Archive Builder
+ -- (without name of the archive or object files).
+
+ Ranlib_Name : String_Access;
+ -- The name of the archive indexer for the platform, if there is one
+
+ Ranlib_Exec : String_Access := null;
+ -- The full path name of the archive indexer
+
+ Ranlib_Options : String_List_Access := null;
+ -- The options to be used when invoking the archive indexer, if any
--------
-- Ar --
Full_Output_File : constant String :=
Ext_To (Output_File, Archive_Ext);
- Arguments : OS_Lib.Argument_List_Access;
+ Arguments : Argument_List_Access;
+ Last_Arg : Natural := 0;
Success : Boolean;
Line_Length : Natural := 0;
+ Maximum_Size : Integer;
+ pragma Import (C, Maximum_Size, "__gnat_link_max");
+ -- Maximum number of bytes to put in an invocation of the
+ -- Archive_Builder.
+
+ Size : Integer;
+ -- The number of bytes for the invocation of the archive builder
+
+ Current_Object : Natural;
+
+ procedure Display;
+ -- Display an invocation of the Archive Builder
+
+ -------------
+ -- Display --
+ -------------
+
+ procedure Display is
+ begin
+ if not Opt.Quiet_Output then
+ Write_Str (Ar_Name.all);
+ Line_Length := Ar_Name'Length;
+
+ for J in 1 .. Last_Arg loop
+
+ -- Make sure the Output buffer does not overflow
+
+ if Line_Length + 1 + Arguments (J)'Length > Buffer_Max then
+ Write_Eol;
+ Line_Length := 0;
+ end if;
+
+ Write_Char (' ');
+
+ -- Only output the first object files when not in verbose mode
+
+ if (not Opt.Verbose_Mode) and then J = Opt_Length + 3 then
+ Write_Str ("...");
+ exit;
+ end if;
+
+ Write_Str (Arguments (J).all);
+ Line_Length := Line_Length + 1 + Arguments (J)'Length;
+ end loop;
+
+ Write_Eol;
+ end if;
+
+ end Display;
+
begin
if Ar_Exec = null then
Ar_Name := Osint.Program_Name (Archive_Builder);
- Ar_Exec := OS_Lib.Locate_Exec_On_Path (Ar_Name.all);
+ Ar_Exec := Locate_Exec_On_Path (Ar_Name.all);
if Ar_Exec = null then
Free (Ar_Name);
Ar_Name := new String'(Archive_Builder);
- Ar_Exec := OS_Lib.Locate_Exec_On_Path (Ar_Name.all);
+ Ar_Exec := Locate_Exec_On_Path (Ar_Name.all);
end if;
if Ar_Exec = null then
Ar_Options := Archive_Builder_Options;
+ Initial_Size := 0;
+ for J in Ar_Options'Range loop
+ Initial_Size := Initial_Size + Ar_Options (J)'Length + 1;
+ end loop;
+
+ Ar_Append_Options := Archive_Builder_Append_Options;
+
+ Opt_Length := Ar_Options'Length;
+
+ if Ar_Append_Options /= null then
+ Opt_Length := Natural'Max (Ar_Append_Options'Length, Opt_Length);
+
+ Size := 0;
+ for J in Ar_Append_Options'Range loop
+ Size := Size + Ar_Append_Options (J)'Length + 1;
+ end loop;
+
+ Initial_Size := Integer'Max (Initial_Size, Size);
+ end if;
+
-- ranlib
Ranlib_Name := Osint.Program_Name (Archive_Indexer);
if Ranlib_Name'Length > 0 then
- Ranlib_Exec := OS_Lib.Locate_Exec_On_Path (Ranlib_Name.all);
+ Ranlib_Exec := Locate_Exec_On_Path (Ranlib_Name.all);
if Ranlib_Exec = null then
Free (Ranlib_Name);
Ranlib_Name := new String'(Archive_Indexer);
- Ranlib_Exec := OS_Lib.Locate_Exec_On_Path (Ranlib_Name.all);
+ Ranlib_Exec := Locate_Exec_On_Path (Ranlib_Name.all);
end if;
if Ranlib_Exec /= null and then Opt.Verbose_Mode then
end if;
Arguments :=
- new String_List (1 .. 1 + Ar_Options'Length + Objects'Length);
+ new String_List (1 .. 1 + Opt_Length + Objects'Length);
Arguments (1 .. Ar_Options'Length) := Ar_Options.all; -- "ar cr ..."
Arguments (Ar_Options'Length + 1) := new String'(Full_Output_File);
- Arguments (Ar_Options'Length + 2 .. Arguments'Last) := Objects;
Delete_File (Full_Output_File);
- if not Opt.Quiet_Output then
- Write_Str (Ar_Name.all);
- Line_Length := Ar_Name'Length;
+ Size := Initial_Size + Full_Output_File'Length + 1;
- for J in Arguments'Range loop
+ -- Check the full size of a call of the archive builder with all the
+ -- object files.
- -- Make sure the Output buffer does not overflow
+ for J in Objects'Range loop
+ Size := Size + Objects (J)'Length + 1;
+ end loop;
- if Line_Length + 1 + Arguments (J)'Length > Buffer_Max then
- Write_Eol;
- Line_Length := 0;
- end if;
+ -- If the size is not too large or if it is not possible to build the
+ -- archive in chunks, build the archive in a single invocation.
- Write_Char (' ');
+ if Size <= Maximum_Size or else Ar_Append_Options = null then
+ Last_Arg := Ar_Options'Length + 1 + Objects'Length;
+ Arguments (Ar_Options'Length + 2 .. Last_Arg) := Objects;
- -- Only output the first object files when not in verbose mode
+ Display;
- if (not Opt.Verbose_Mode) and then J = Ar_Options'Length + 3 then
- Write_Str ("...");
- exit;
- end if;
+ Spawn (Ar_Exec.all, Arguments (1 .. Last_Arg), Success);
- Write_Str (Arguments (J).all);
- Line_Length := Line_Length + 1 + Arguments (J)'Length;
+ else
+ -- Build the archive in several invocation, making sure to not
+ -- go over the maximum size for each invocation.
+
+ Last_Arg := Ar_Options'Length + 1;
+ Current_Object := Objects'First;
+ Size := Initial_Size + Full_Output_File'Length + 1;
+
+ -- First invocation
+
+ while Current_Object <= Objects'Last loop
+ Size := Size + Objects (Current_Object)'Length + 1;
+ exit when Size > Maximum_Size;
+ Last_Arg := Last_Arg + 1;
+ Arguments (Last_Arg) := Objects (Current_Object);
+ Current_Object := Current_Object + 1;
end loop;
- Write_Eol;
- end if;
+ Display;
+
+ Spawn (Ar_Exec.all, Arguments (1 .. Last_Arg), Success);
+
+ Arguments (1 .. Ar_Append_Options'Length) := Ar_Append_Options.all;
+ Arguments
+ (Ar_Append_Options'Length + 1) := new String'(Full_Output_File);
- OS_Lib.Spawn (Ar_Exec.all, Arguments.all, Success);
+ -- Appending invocation(s)
+
+ Big_Loop : while Success and then Current_Object <= Objects'Last loop
+ Last_Arg := Ar_Append_Options'Length + 1;
+ Size := Initial_Size + Full_Output_File'Length + 1;
+
+ Inner_Loop : while Current_Object <= Objects'Last loop
+ Size := Size + Objects (Current_Object)'Length + 1;
+ exit Inner_Loop when Size > Maximum_Size;
+ Last_Arg := Last_Arg + 1;
+ Arguments (Last_Arg) := Objects (Current_Object);
+ Current_Object := Current_Object + 1;
+ end loop Inner_Loop;
+
+ Display;
+
+ Spawn (Ar_Exec.all, Arguments (1 .. Last_Arg), Success);
+ end loop Big_Loop;
+ end if;
if not Success then
Fail (Ar_Name.all, " execution error.");
Write_Line (Arguments (Ar_Options'Length + 1).all);
end if;
- OS_Lib.Spawn
+ Spawn
(Ranlib_Exec.all,
Ranlib_Options.all & (Arguments (Ar_Options'Length + 1)),
Success);
Success : Boolean;
begin
- OS_Lib.Delete_File (File'Address, Success);
+ Delete_File (File'Address, Success);
if Opt.Verbose_Mode then
if Success then
Options_2 : Argument_List;
Driver_Name : Name_Id := No_Name)
is
+ Link_Bytes : Integer := 0;
+ -- Projected number of bytes for the linker command line
+
+ Link_Max : Integer;
+ pragma Import (C, Link_Max, "__gnat_link_max");
+ -- Maximum number of bytes on the command line supported by the OS
+ -- linker. Passed this limit the response file mechanism must be used
+ -- if supported.
+
+ Object_List_File_Supported : Boolean;
+ for Object_List_File_Supported'Size use Character'Size;
+ pragma Import
+ (C, Object_List_File_Supported, "__gnat_objlist_file_supported");
+ -- Predicate indicating whether the linker has an option whereby the
+ -- names of object files can be passed to the linker in a file.
+
+ Object_File_Option_Ptr : Interfaces.C.Strings.chars_ptr;
+ pragma Import (C, Object_File_Option_Ptr, "__gnat_object_file_option");
+ -- Pointer to a string representing the linker option which specifies
+ -- the response file.
+
+ Using_GNU_Linker : Boolean;
+ for Using_GNU_Linker'Size use Character'Size;
+ pragma Import (C, Using_GNU_Linker, "__gnat_using_gnu_linker");
+ -- Predicate indicating whether this target uses the GNU linker. In
+ -- this case we must output a GNU linker compatible response file.
+
+ Opening : aliased constant String := """";
+ Closing : aliased constant String := '"' & ASCII.LF;
+ -- Needed to quote object paths in object list files when GNU linker
+ -- is used.
+
+ Tname : String_Access;
+ Tname_FD : File_Descriptor := Invalid_FD;
+ -- Temporary file used by linker to pass list of object files on
+ -- certain systems with limitations on size of arguments.
+
+ Closing_Status : Boolean;
+ -- For call to Close
+
Arguments :
- OS_Lib.Argument_List
+ Argument_List
(1 .. 7 + Objects'Length + Options'Length + Options_2'Length);
A : Natural := 0;
Success : Boolean;
- Out_Opt : constant OS_Lib.String_Access :=
- new String'("-o");
- Out_V : constant OS_Lib.String_Access :=
- new String'(Output_File);
- Lib_Dir : constant OS_Lib.String_Access :=
- new String'("-L" & Lib_Directory);
- Lib_Opt : constant OS_Lib.String_Access :=
- new String'(Dynamic_Option);
+ Out_Opt : constant String_Access := new String'("-o");
+ Out_V : constant String_Access := new String'(Output_File);
+ Lib_Dir : constant String_Access := new String'("-L" & Lib_Directory);
+ Lib_Opt : constant String_Access := new String'(Dynamic_Option);
- Driver : String_Access;
+ Driver : String_Access;
type Object_Position is (First, Second, Last);
Position : Object_Position;
+ procedure Write_RF (A : System.Address; N : Integer);
+ -- Write a string to the response file and check if it was successful.
+ -- Fail the program if it was not successful (disk full).
+
+ --------------
+ -- Write_RF --
+ --------------
+
+ procedure Write_RF (A : System.Address; N : Integer) is
+ Status : Integer;
+ begin
+ Status := Write (Tname_FD, A, N);
+
+ if Status /= N then
+ Fail ("cannot generate response file to link library: disk full");
+ end if;
+ end Write_RF;
+
begin
if Driver_Name = No_Name then
if Gcc_Exec = null then
- Gcc_Exec := OS_Lib.Locate_Exec_On_Path (Gcc_Name);
+ Gcc_Exec := Locate_Exec_On_Path (Gcc_Name);
if Gcc_Exec = null then
Fail (Gcc_Name, " not found in path");
Driver := Gcc_Exec;
else
- Driver := OS_Lib.Locate_Exec_On_Path (Get_Name_String (Driver_Name));
+ Driver := Locate_Exec_On_Path (Get_Name_String (Driver_Name));
if Driver = null then
Fail (Get_Name_String (Driver_Name), " not found in path");
end if;
end if;
+ Link_Bytes := 0;
+
if Lib_Opt'Length /= 0 then
A := A + 1;
Arguments (A) := Lib_Opt;
+ Link_Bytes := Link_Bytes + Lib_Opt'Length + 1;
end if;
A := A + 1;
Arguments (A) := Out_Opt;
+ Link_Bytes := Link_Bytes + Out_Opt'Length + 1;
A := A + 1;
Arguments (A) := Out_V;
+ Link_Bytes := Link_Bytes + Out_V'Length + 1;
A := A + 1;
Arguments (A) := Lib_Dir;
+ Link_Bytes := Link_Bytes + Lib_Dir'Length + 1;
A := A + Options'Length;
Arguments (A - Options'Length + 1 .. A) := Options;
+ for J in Options'Range loop
+ Link_Bytes := Link_Bytes + Options (J)'Length + 1;
+ end loop;
+
if not Opt.Quiet_Output then
Write_Str (Driver.all);
Write_Eol;
end if;
- A := A + Objects'Length;
- Arguments (A - Objects'Length + 1 .. A) := Objects;
+ for J in Objects'Range loop
+ Link_Bytes := Link_Bytes + Objects (J)'Length + 1;
+ end loop;
+
+ for J in Options_2'Range loop
+ Link_Bytes := Link_Bytes + Options_2 (J)'Length + 1;
+ end loop;
+
+ if Object_List_File_Supported and then Link_Bytes > Link_Max then
+ -- Create a temporary file containing the object files, one object
+ -- file per line for maximal compatibility with linkers supporting
+ -- this option.
+
+ Create_Temp_File (Tname_FD, Tname);
+
+ -- If target is using the GNU linker we must add a special header
+ -- and footer in the response file.
+
+ -- The syntax is : INPUT (object1.o object2.o ... )
+
+ -- Because the GNU linker does not like name with characters such
+ -- as '!', we must put the object paths between double quotes.
+
+ if Using_GNU_Linker then
+ declare
+ GNU_Header : aliased constant String := "INPUT (";
+
+ begin
+ Write_RF (GNU_Header'Address, GNU_Header'Length);
+ end;
+ end if;
+
+ for J in Objects'Range loop
+ -- Opening quote for GNU linker
+
+ if Using_GNU_Linker then
+ Write_RF (Opening'Address, 1);
+ end if;
+
+ Write_RF
+ (Objects (J).all'Address, Objects (J).all'Length);
+
+ -- Closing quote for GNU linker
+
+ if Using_GNU_Linker then
+ Write_RF (Closing'Address, 2);
+
+ else
+ Write_RF (ASCII.LF'Address, 1);
+ end if;
+ end loop;
+
+ -- Handle GNU linker response file footer
+
+ if Using_GNU_Linker then
+ declare
+ GNU_Footer : aliased constant String := ")";
+
+ begin
+ Write_RF (GNU_Footer'Address, GNU_Footer'Length);
+ end;
+ end if;
+
+ Close (Tname_FD, Closing_Status);
+
+ if not Closing_Status then
+ Fail ("cannot generate response file to link library: disk full");
+ end if;
+
+ A := A + 1;
+ Arguments (A) :=
+ new String'(Value (Object_File_Option_Ptr) & Tname.all);
+
+ else
+ A := A + Objects'Length;
+ Arguments (A - Objects'Length + 1 .. A) := Objects;
+ end if;
A := A + Options_2'Length;
Arguments (A - Options_2'Length + 1 .. A) := Options_2;
- OS_Lib.Spawn (Driver.all, Arguments (1 .. A), Success);
+ Spawn (Driver.all, Arguments (1 .. A), Success);
+
+ if Tname /= null then
+ Delete_File (Tname.all, Closing_Status);
+
+ if not Closing_Status then
+ Write_Str ("warning: could not delete response file """);
+ Write_Str (Tname.all);
+ Write_Line (""" to link library");
+ end if;
+ end if;
if not Success then
if Driver_Name = No_Name then
Fail (Gcc_Name, " execution error");
-
else
Fail (Get_Name_String (Driver_Name), " execution error");
end if;
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