-- --
-- S p e c --
-- --
--- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
-- --
-- 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 Hostparm; use Hostparm;
with Types; use Types;
+pragma Warnings (Off);
+-- This package is used also by gnatcoll
with System.Strings; use System.Strings;
with System.WCh_Con; use System.WCh_Con;
+pragma Warnings (On);
package Opt is
+ ----------------------
+ -- Checksum Control --
+ ----------------------
+
+ -- Checksums are computed for sources to check for sources being the same
+ -- from a compilation point of view (e.g. spelling of identifiers and
+ -- white space layout do not count in this computation).
+
+ -- The way the checksum is computed has evolved across the various versions
+ -- of GNAT. When gprbuild is called with -m, the checksums must be computed
+ -- the same way in gprbuild as it was in the GNAT version of the compiler.
+ -- The different ways are
+
+ -- Version 6.4 and later:
+
+ -- The Accumulate_Token_Checksum procedure is called after each numeric
+ -- literal and each identifier/keyword. For keywords, Tok_Identifier is
+ -- used in the call to Accumulate_Token_Checksum.
+
+ -- Versions 5.04 to 6.3:
+
+ -- For keywords, the token value were used in the call to procedure
+ -- Accumulate_Token_Checksum. Type Token_Type did not include Tok_Some.
+
+ -- Versions 5.03:
+
+ -- For keywords, the token value were used in the call to
+ -- Accumulate_Token_Checksum. Type Token_Type did not include
+ -- Tok_Interface, Tok_Overriding, Tok_Synchronized and Tok_Some.
+
+ -- Versions 5.02 and before:
+
+ -- No calls to procedure Accumulate_Token_Checksum (the checksum
+ -- mechanism was introduced in version 5.03).
+
+ -- To signal to the scanner whether Accumulate_Token_Checksum needs to be
+ -- called and what versions to call, the following Boolean flags are used:
+
+ Checksum_Accumulate_Token_Checksum : Boolean := True;
+ -- GPRBUILD
+ -- Set to False by gprbuild when the version of GNAT is 5.02 or before. If
+ -- this switch is False, then we do not call Accumulate_Token_Checksum, so
+ -- the setting of the following two flags is irrelevant.
+
+ Checksum_GNAT_6_3 : Boolean := False;
+ -- GPRBUILD
+ -- Set to True by gprbuild when the version of GNAT is 6.3 or before.
+
+ Checksum_GNAT_5_03 : Boolean := False;
+ -- GPRBUILD
+ -- Set to True by gprbuild when the version of GNAT is 5.03 or before.
+
----------------------------------------------
-- Settings of Modes for Current Processing --
----------------------------------------------
-- GNATBIND, GNATLINK
-- Set True if binder file to be generated in Ada rather than C
- type Ada_Version_Type is (Ada_83, Ada_95, Ada_05);
- pragma Warnings (Off, Ada_Version_Type);
+ type Ada_Version_Type is (Ada_83, Ada_95, Ada_2005, Ada_2012);
+ pragma Ordered (Ada_Version_Type);
-- Versions of Ada for Ada_Version below. Note that these are ordered,
-- so that tests like Ada_Version >= Ada_95 are legitimate and useful.
- -- The Warnings_Off pragma stops warnings for Ada_Version >= Ada_05,
- -- which we want to allow, so that things work OK when Ada_15 is added!
- -- This warning is now removed, so this pragma can be removed some time???
+ -- Think twice before using "="; Ada_Version >= Ada_2012 is more likely
+ -- what you want, because it will apply to future versions of the language.
- Ada_Version_Default : Ada_Version_Type := Ada_05;
+ Ada_Version_Default : constant Ada_Version_Type := Ada_2005;
+ pragma Warnings (Off, Ada_Version_Default);
-- GNAT
- -- Default Ada version if no switch given
+ -- Default Ada version if no switch given. The Warnings off is to kill
+ -- constant condition warnings.
+ --
+ -- WARNING: some scripts rely on the format of this line of code. Any
+ -- change must be coordinated with the scripts requirements.
Ada_Version : Ada_Version_Type := Ada_Version_Default;
-- GNAT
-- the rare cases (notably for pragmas Preelaborate_05 and Pure_05)
-- where in the run-time we want the explicit version set.
- Ada_Version_Runtime : Ada_Version_Type := Ada_05;
+ Ada_Version_Runtime : Ada_Version_Type := Ada_2012;
-- GNAT
-- Ada version used to compile the runtime. Used to set Ada_Version (but
-- not Ada_Version_Explicit) when compiling predefined or internal units.
-- also set true if certain Unchecked_Conversion instantiations require
-- checking based on annotated values.
+ Back_End_Handles_Limited_Types : Boolean;
+ -- This flag is set true if the back end can properly handle limited or
+ -- other by reference types, and avoid copies. If this flag is False, then
+ -- the front end does special expansion for conditional expressions to make
+ -- sure that no copy occurs. If the flag is True, then the expansion for
+ -- conditional expressions relies on the back end properly handling things.
+ -- Currently the default is False for all cases (set in gnat1drv). The
+ -- default can be modified using -gnatd.L (sets the flag True).
+
Bind_Alternate_Main_Name : Boolean := False;
-- GNATBIND
-- True if main should be called Alternate_Main_Name.all.
-- GNAT
-- This points to the list of N_Pragma nodes for Check_Policy pragmas
-- that are linked through the Next_Pragma fields, with the list being
- -- terminated by Empty. The order is most recently processed first.
+ -- terminated by Empty. The order is most recently processed first. Note
+ -- that Push_Scope and Pop_Scope in Sem_Ch8 save and restore the value
+ -- of this variable, implementing the required scope control for pragmas
+ -- appearing a declarative part.
Check_Readonly_Files : Boolean := False;
-- GNATMAKE
-- default was set by the binder, and that the default should be the
-- initial value of System.Secondary_Stack.Default_Secondary_Stack_Size.
+ Default_Pool : Node_Id := Empty;
+ -- GNAT
+ -- Used to record the storage pool name (or null literal) that is the
+ -- argument of an applicable pragma Default_Storage_Pool.
+ -- Empty: No pragma Default_Storage_Pool applies.
+ -- N_Null node: "pragma Default_Storage_Pool (null);" applies.
+ -- otherwise: "pragma Default_Storage_Pool (X);" applies, and
+ -- this points to the name X.
+ -- Push_Scope and Pop_Scope in Sem_Ch8 save and restore this value.
+
Detect_Blocking : Boolean := False;
-- GNAT
-- Set True to force the run time to raise Program_Error if calls to
-- It is used to set Warn_On_Exception_Propagation True if the restriction
-- No_Exception_Propagation is set.
+ Exception_Extra_Info : Boolean := False;
+ -- GNAT
+ -- True when switch -gnateE is used. When True, generate extra information
+ -- associated with exception messages (in particular range and index
+ -- checks).
+
Exception_Locations_Suppressed : Boolean := False;
-- GNAT
- -- This flag is set True if a Suppress_Exception_Locations configuration
- -- pragma is currently active.
+ -- Set to True if a Suppress_Exception_Locations configuration pragma is
+ -- currently active.
type Exception_Mechanism_Type is
-- Determines the handling of exceptions. See Exp_Ch11 for details
Front_End_Setjmp_Longjmp_Exceptions;
-- GNAT
-- Set to the appropriate value depending on the default as given in
- -- system.ads (ZCX_By_Default, GCC_ZCX_Support).
- -- The C convention is there to make this variable accessible to gigi.
+ -- system.ads (ZCX_By_Default, GCC_ZCX_Support). The C convention is there
+ -- to make this variable accessible to gigi.
Exception_Tracebacks : Boolean := False;
-- GNATBIND
-- GNAT
-- True if compiling in GNAT system mode (-gnatg switch)
+ Heap_Size : Nat := 0;
+ -- GNATBIND
+ -- Heap size for memory allocations. Valid values are 32 and 64. Only
+ -- available on VMS.
+
HLO_Active : Boolean := False;
-- GNAT
-- True if High Level Optimizer is activated (-gnatH switch)
-- Set to True to skip compile and bind steps (except when Bind_Only is
-- set to True).
+ List_Inherited_Aspects : Boolean := True;
+ -- GNAT
+ -- List inherited invariants, preconditions, and postconditions from
+ -- Invariant'Class, Pre'Class, and Post'Class aspects.
+
List_Restrictions : Boolean := False;
-- GNATBIND
-- Set to True to list restrictions pragmas that could apply to partition
-- GNATMAKE
-- Set to True when an object directory is specified with option -D
+ One_Compilation_Per_Obj_Dir : Boolean := False;
+ -- GNATMAKE, GPRBUILD
+ -- Set to True with switch --single-compile-per-obj-dir. When True, there
+ -- cannot be simultaneous compilations with the object files in the same
+ -- object directory, if project files are used.
+
type Operating_Mode_Type is (Check_Syntax, Check_Semantics, Generate_Code);
Operating_Mode : Operating_Mode_Type := Generate_Code;
-- GNAT
-- GNATBIND
-- True if output of list of linker options is requested (-K switch set)
- Output_Object_List : Boolean := False;
+ Output_ALI_List : Boolean := False;
+ ALI_List_Filename : String_Ptr;
+ -- GNATBIND
+ -- True if output of list of ALIs is requested (-A switch set). List is
+ -- output under the given filename, or standard output if not specified.
+
+ Output_Object_List : Boolean := False;
+ Object_List_Filename : String_Ptr;
-- GNATBIND
- -- True if output of list of objects is requested (-O switch set)
+ -- True if output of list of objects is requested (-O switch set). List is
+ -- output under the given filename, or standard output if not specified.
Overflow_Checks_Unsuppressed : Boolean := False;
-- GNAT
-- GNAT
-- Set True if a pragma Short_Circuit_And_Or applies to the current unit.
+ Short_Descriptors : Boolean := False;
+ -- GNAT
+ -- Set True if a pragma Short_Descriptors applies to the current unit.
+
Sprint_Line_Limit : Nat := 72;
+ -- GNAT
-- Limit values for chopping long lines in Sprint output, can be reset
-- by use of NNN parameter with -gnatG or -gnatD switches.
-- Tolerate time stamp and other consistency errors. If this flag is set to
-- True (-t), then inconsistencies result in warnings rather than errors.
+ Treat_Categorization_Errors_As_Warnings : Boolean := False;
+ -- Normally categorization errors are true illegalities. If this switch
+ -- is set, then such errors result in warning messages rather than error
+ -- messages. Set True by -gnateP (P for Pure/Preelaborate).
+
Treat_Restrictions_As_Warnings : Boolean := False;
-- GNAT
-- Set True to treat pragma Restrictions as Restriction_Warnings. Set by
-- set True, and upper half characters in the source indicate the start of
-- a wide character sequence. Set by -gnatW or -W switches.
+ Use_Include_Path_File : Boolean := False;
+ -- GNATMAKE, GPRBUILD
+ -- When True, create a source search path file, even when a mapping file
+ -- is used.
+
Usage_Requested : Boolean := False;
-- GNAT, GNATBIND, GNATMAKE
-- Set to True if -h (-gnath for the compiler) switch encountered
-- requesting usage information
+ Use_Expression_With_Actions : Boolean;
+ -- The N_Expression_With_Actions node has been introduced relatively
+ -- recently, and not all back ends are prepared to handle it yet. So
+ -- we use this flag to suppress its use during a transitional period.
+ -- Currently the default is False for all cases (set in gnat1drv).
+ -- The default can be modified using -gnatd.X/-gnatd.Y.
+
Use_Pragma_Linker_Constructor : Boolean := False;
-- GNATBIND
-- True if pragma Linker_Constructor applies to adainit
-- information sent to standard output, also header, copyright and summary)
type Verbosity_Level_Type is (None, Low, Medium, High);
+ pragma Ordered (Verbosity_Level_Type);
Verbosity_Level : Verbosity_Level_Type := High;
-- GNATMAKE, GPRMAKE
-- Modified by gnatmake or gprmake switches -v, -vl, -vm, -vh. Indicates
-- including warnings on Ada 2005 obsolescent features used in Ada 2005
-- mode. Set False by -gnatwY.
- Warn_On_Parameter_Order : Boolean := False;
+ Warn_On_Ada_2012_Compatibility : Boolean := True;
-- GNAT
- -- Set to True to generate warnings for cases where the argument list for
- -- a call is a sequence of identifiers that match the formal identifiers,
- -- but are in the wrong order.
+ -- Set to True to generate all warnings on Ada 2012 compatibility issues,
+ -- including warnings on Ada 2012 obsolescent features used in Ada 2012
+ -- mode. Set False by -gnatwY.
+
+ Warn_On_All_Unread_Out_Parameters : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings in all cases where a variable is
+ -- modified by being passed as to an OUT formal, but the resulting value is
+ -- never read. The default is that this warning is suppressed, except in
+ -- the case of
Warn_On_Assertion_Failure : Boolean := True;
-- GNAT
-- but only if there is only one out parameter for the procedure involved.
-- The default is that this warning is suppressed.
- Warn_On_All_Unread_Out_Parameters : Boolean := False;
- -- GNAT
- -- Set to True to generate warnings in all cases where a variable is
- -- modified by being passed as to an OUT formal, but the resulting value is
- -- never read. The default is that this warning is suppressed, except in
- -- the case of
-
Warn_On_No_Value_Assigned : Boolean := True;
-- GNAT
-- Set to True to generate warnings if no value is ever assigned to a
-- use this to avoid turning it on by default when No_Exception_Propagation
-- restriction is set and an exception handler is present.
+ Warn_On_Object_Renames_Function : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings when a function result is renamed as
+ -- an object. The default is that this warning is disabled.
+
Warn_On_Obsolescent_Feature : Boolean := False;
-- GNAT
-- Set to True to generate warnings on use of any feature in Annex or if a
-- Set to True to generate warnings for cases where parentheses are missing
-- and the usage is questionable, because the intent is unclear.
+ Warn_On_Parameter_Order : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings for cases where the argument list for
+ -- a call is a sequence of identifiers that match the formal identifiers,
+ -- but are in the wrong order.
+
Warn_On_Redundant_Constructs : Boolean := False;
-- GNAT
-- Set to True to generate warnings for redundant constructs (e.g. useless
-- assignments/conversions). The default is that this warning is disabled.
- Warn_On_Object_Renames_Function : Boolean := False;
- -- GNAT
- -- Set to True to generate warnings when a function result is renamed as
- -- an object. The default is that this warning is disabled.
-
Warn_On_Reverse_Bit_Order : Boolean := True;
-- GNAT
-- Set to True to generate warning (informational) messages for component
-- non-portable semantics (e.g. because sizes of types differ). The default
-- is that this warning is enabled.
+ Warn_On_Unordered_Enumeration_Type : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings for inappropriate uses (comparisons
+ -- and explicit ranges) on unordered enumeration types (which includes
+ -- all enumeration types for which pragma Ordered is not given). The
+ -- default is that this warning is disabled.
+
Warn_On_Unrecognized_Pragma : Boolean := True;
-- GNAT
-- Set to True to generate warnings for unrecognized pragmas. The default
-- mode, as possibly set by the command line switch -gnata and possibly
-- modified by the use of the configuration pragma Debug_Policy.
+ Default_Pool_Config : Node_Id := Empty;
+ -- GNAT
+ -- Same as Default_Pool above, except this is only for Default_Storage_Pool
+ -- pragmas that are configuration pragmas.
+
Dynamic_Elaboration_Checks_Config : Boolean := False;
-- GNAT
-- Set True for dynamic elaboration checking mode, as set by the -gnatE
-- flag is used to set the initial value for Polling_Required at the start
-- of analyzing each unit.
+ Short_Descriptors_Config : Boolean;
+ -- GNAT
+ -- This is the value of the configuration switch that controls the use of
+ -- Short_Descriptors for setting descriptor default sizes. It can be set
+ -- True by the use of the pragma Short_Descriptors in the gnat.adc file.
+ -- This flag is used to set the initial value for Short_Descriptors at the
+ -- start of analyzing each unit.
+
Use_VADS_Size_Config : Boolean;
-- GNAT
-- This is the value of the configuration switch that controls the use of
Assume_No_Invalid_Values : Boolean;
Check_Policy_List : Node_Id;
Debug_Pragmas_Enabled : Boolean;
+ Default_Pool : Node_Id;
Dynamic_Elaboration_Checks : Boolean;
Exception_Locations_Suppressed : Boolean;
Extensions_Allowed : Boolean;
Optimize_Alignment_Local : Boolean;
Persistent_BSS_Mode : Boolean;
Polling_Required : Boolean;
+ Short_Descriptors : Boolean;
Use_VADS_Size : Boolean;
end record;
OSDN Git Service
