1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
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. --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 -- This package contains global flags set by the initialization routine from
33 -- the command line and referenced throughout the compiler, the binder, or
34 -- other GNAT tools. The comments indicate which options are used by which
35 -- programs (GNAT, GNATBIND, GNATLINK, GNATMAKE, GPRMAKE, etc).
37 -- Some flags are labelled "PROJECT MANAGER". These are used by tools that
38 -- use the Project Manager. These tools include gnatmake, gnatname, the gnat
39 -- driver, gnatclean, gprbuild and gprclean.
41 with Hostparm
; use Hostparm
;
42 with Types
; use Types
;
44 with System
.Strings
; use System
.Strings
;
45 with System
.WCh_Con
; use System
.WCh_Con
;
49 ----------------------------------------------
50 -- Settings of Modes for Current Processing --
51 ----------------------------------------------
53 -- The following mode values represent the current state of processing.
54 -- The values set here are the default values. Unless otherwise noted,
55 -- the value may be reset in Switch-? with an appropriate switch. In
56 -- some cases, the values can also be modified by pragmas, and in the
57 -- case of some binder variables, Gnatbind.Scan_Bind_Arg may modify
58 -- the default values.
60 Ada_Bind_File
: Boolean := True;
62 -- Set True if binder file to be generated in Ada rather than C
64 type Ada_Version_Type
is (Ada_83
, Ada_95
, Ada_05
);
65 pragma Warnings
(Off
, Ada_Version_Type
);
66 -- Versions of Ada for Ada_Version below. Note that these are ordered,
67 -- so that tests like Ada_Version >= Ada_95 are legitimate and useful.
68 -- The Warnings_Off pragma stops warnings for Ada_Version >= Ada_05,
69 -- which we want to allow, so that things work OK when Ada_15 is added!
70 -- This warning is now removed, so this pragma can be removed some time???
72 Ada_Version_Default
: Ada_Version_Type
:= Ada_05
;
74 -- Default Ada version if no switch given
76 Ada_Version
: Ada_Version_Type
:= Ada_Version_Default
;
78 -- Current Ada version for compiler, as set by configuration pragmas,
79 -- compiler switches, or implicitly (to Ada_Version_Runtime) when a
80 -- predefined or internal file is compiled.
82 Ada_Version_Explicit
: Ada_Version_Type
:= Ada_Version_Default
;
84 -- Like Ada_Version, but does not get set implicitly for predefined
85 -- or internal units, so it reflects the Ada version explicitly set
86 -- using configuration pragmas or compiler switches (or if neither
87 -- appears, it remains set to Ada_Version_Default). This is used in
88 -- the rare cases (notably for pragmas Preelaborate_05 and Pure_05)
89 -- where in the run-time we want the explicit version set.
91 Ada_Version_Runtime
: Ada_Version_Type
:= Ada_05
;
93 -- Ada version used to compile the runtime. Used to set Ada_Version (but
94 -- not Ada_Version_Explicit) when compiling predefined or internal units.
96 Ada_Final_Suffix
: constant String := "final";
97 Ada_Final_Name
: String_Ptr
:= new String'("ada" & Ada_Final_Suffix);
99 -- The name of the procedure that performs the finalization at the end of
100 -- execution. This variable may be modified by Gnatbind.Scan_Bind_Arg.
102 Ada_Init_Suffix : constant String := "init";
103 Ada_Init_Name : String_Ptr := new String'("ada" & Ada_Init_Suffix
);
105 -- The name of the procedure that performs initialization at the start
106 -- of execution. This variable may be modified by Gnatbind.Scan_Bind_Arg.
108 Ada_Main_Name_Suffix
: constant String := "main";
110 -- The suffix for Ada_Main_Name. Defined as a constant here so that it
111 -- can be referenced in a uniform manner to create either the default
112 -- value of Ada_Main_Name (declared below), or the non-default name
113 -- set by Gnatbind.Scan_Bind_Arg.
115 Ada_Main_Name
: String_Ptr
:= new String'("ada_" & Ada_Main_Name_Suffix);
117 -- The name of the Ada package generated by the binder (when in Ada mode).
118 -- This variable may be modified by Gnatbind.Scan_Bind_Arg.
120 Address_Clause_Overlay_Warnings : Boolean := True;
122 -- Set False to disable address clause warnings
124 Address_Is_Private : Boolean := False;
126 -- Set True if package System has the line "type Address is private;"
128 All_Errors_Mode : Boolean := False;
130 -- Flag set to force display of multiple errors on a single line and
131 -- also repeated error messages for references to undefined identifiers
132 -- and certain other repeated error messages. Set by use of -gnatf.
134 All_Sources : Boolean := False;
136 -- Set to True to require all source files to be present. This flag is
137 -- directly modified by gnatmake to affect the shared binder routines.
139 Alternate_Main_Name : String_Ptr := null;
141 -- Set to non null when Bind_Alternate_Main_Name is True. This value
142 -- is modified as needed by Gnatbind.Scan_Bind_Arg.
144 ASIS_Mode : Boolean := False;
146 -- Enable semantic checks and tree transformations that are important
147 -- for ASIS but that are usually skipped if Operating_Mode is set to
148 -- Check_Semantics. This flag does not have the corresponding option to set
149 -- it ON. It is set ON when Tree_Output is set ON, it can also be set ON
150 -- from the code of GNSA-based tool (a client may need to set ON the
151 -- Back_Annotate_Rep_Info flag in this case. At the moment this does not
152 -- make very much sense, because GNSA cannot do back annotation).
154 Assertions_Enabled : Boolean := False;
156 -- Enable assertions made using pragma Assert
158 Assume_No_Invalid_Values : Boolean := False;
160 -- Normally, in accordance with (RM 13.9.1 (9-11)) the front end assumes
161 -- that values could have invalid representations, unless it can clearly
162 -- prove that the values are valid. If this switch is set (by -gnatB or by
163 -- pragma Assume_No_Invalid_Values (Off)), then the compiler assumes values
164 -- are valid and in range of their representations. This feature is now
165 -- fully enabled in the compiler.
167 Back_Annotate_Rep_Info : Boolean := False;
169 -- If set True, enables back annotation of representation information
170 -- by gigi, even in -gnatc mode. This is set True by the use of -gnatR
171 -- (list representation information) or -gnatt (generate tree). It is
172 -- also set true if certain Unchecked_Conversion instantiations require
173 -- checking based on annotated values.
175 Bind_Alternate_Main_Name : Boolean := False;
177 -- True if main should be called Alternate_Main_Name.all.
178 -- This variable may be set to True by Gnatbind.Scan_Bind_Arg.
180 Bind_Main_Program : Boolean := True;
182 -- Set to False if not binding main Ada program
184 Bind_For_Library : Boolean := False;
186 -- Set to True if the binder needs to generate a file designed for
187 -- building a library. May be set to True by Gnatbind.Scan_Bind_Arg.
189 Bind_Only : Boolean := False;
190 -- GNATMAKE, GPRMAKE, GPRBUILD
191 -- Set to True to skip compile and link steps
192 -- (except when Compile_Only and/or Link_Only are True).
194 Blank_Deleted_Lines : Boolean := False;
196 -- Output empty lines for each line of preprocessed input that is deleted
197 -- in the output, including preprocessor lines starting with a '#
'.
199 Brief_Output : Boolean := False;
201 -- Force brief error messages to standard error, even if verbose mode is
202 -- set (so that main error messages go to standard output).
204 Build_Bind_And_Link_Full_Project : Boolean := False;
206 -- Set to True to build, bind and link all the sources of a project file
209 Check_Object_Consistency : Boolean := False;
210 -- GNATBIND, GNATMAKE
211 -- Set to True to check whether every object file is consistent with
212 -- its corresponding ada library information (ALI) file. An object
213 -- file is inconsistent with the corresponding ALI file if the object
214 -- file does not exist or if it has an older time stamp than the ALI file.
215 -- Default above is for GNATBIND. GNATMAKE overrides this default to
216 -- True (see Make.Initialize) since we normally do need to check source
217 -- consistencies in gnatmake.
219 Check_Only : Boolean := False;
221 -- Set to True to do checks only, no output of binder file
223 Check_Policy_List : Node_Id := Empty;
225 -- This points to the list of N_Pragma nodes for Check_Policy pragmas
226 -- that are linked through the Next_Pragma fields, with the list being
227 -- terminated by Empty. The order is most recently processed first.
229 Check_Readonly_Files : Boolean := False;
231 -- Set to True to check readonly files during the make process
233 Check_Source_Files : Boolean := True;
234 -- GNATBIND, GNATMAKE
235 -- Set to True to enable consistency checking for any source files that
236 -- are present (i.e. date must match the date in the library info file).
237 -- Set to False for object file consistency check only. This flag is
238 -- directly modified by gnatmake, to affect the shared binder routines.
240 Check_Switches : Boolean := False;
241 -- GNATMAKE, GPRMAKE, GPBUILD
242 -- Set to True to check compiler options during the make process
244 Check_Unreferenced : Boolean := False;
246 -- Set to True to enable checking for unreferenced entities other
247 -- than formal parameters (for which see Check_Unreferenced_Formals)
249 Check_Unreferenced_Formals : Boolean := False;
251 -- Set True to check for unreferenced formals. This is turned on by
252 -- -gnatwa/wf/wu and turned off by -gnatwA/wF/wU.
254 Check_Withs : Boolean := False;
256 -- Set to True to enable checking for unused withs, and also the case
257 -- of withing a package and using none of the entities in the package.
259 CodePeer_Mode : Boolean := False;
261 -- Enable full CodePeer mode (SCIL generation, disable switches that
262 -- interact badly with it, etc...).
264 Commands_To_Stdout : Boolean := False;
266 -- True if echoed commands to be written to stdout instead of stderr
268 Comment_Deleted_Lines : Boolean := False;
270 -- True if source lines removed by the preprocessor should be commented
271 -- in the output file.
273 Compile_Only : Boolean := False;
274 -- GNATMAKE, GNATCLEAN, GPRMAKE, GPBUILD, GPRCLEAN
275 -- GNATMAKE, GPRMAKE, GPRMAKE:
276 -- set to True to skip bind and link steps (except when Bind_Only is
278 -- GNATCLEAN, GPRCLEAN:
279 -- set to True to delete only the files produced by the compiler but not
280 -- the library files or the executable files.
282 Config_File : Boolean := True;
284 -- Set to False to inhibit reading and processing of gnat.adc file
286 Config_File_Names : String_List_Access := null;
288 -- Names of configuration pragmas files (given by switches -gnatec)
290 Configurable_Run_Time_Mode : Boolean := False;
292 -- Set True if the compiler is operating in configurable run-time mode.
293 -- This happens if the flag Targparm.Configurable_Run_TimeMode_On_Target
294 -- is set True, or if pragma No_Run_Time is used. See the spec of Rtsfind
295 -- for details on the handling of the latter pragma.
297 Constant_Condition_Warnings : Boolean := False;
299 -- Set to True to activate warnings on constant conditions
301 Create_Mapping_File : Boolean := False;
303 -- Set to True (-C switch) to indicate that the compiler will be invoked
304 -- with a mapping file (-gnatem compiler switch).
306 Debug_Pragmas_Enabled : Boolean := False;
308 -- Enable debug statements from pragma Debug
310 subtype Debug_Level_Value is Nat range 0 .. 3;
311 Debugger_Level : Debug_Level_Value := 0;
313 -- The value given to the -g parameter. The default value for -g with
314 -- no value is 2. This is usually ignored by GNATBIND, except in the
315 -- VMS version where it is passed as an argument to __gnat_initialize
316 -- to trigger the activation of the remote debugging interface.
317 -- Is this still true ???
319 Debug_Generated_Code : Boolean := False;
321 -- Set True (-gnatD switch) to debug generated expanded code instead
322 -- of the original source code. Causes debugging information to be
323 -- written with respect to the generated code file that is written.
325 Default_Exit_Status : Int := 0;
327 -- Set the default exit status value. Set by the -Xnnn switch for the
330 Default_Stack_Size : Int := -1;
332 -- Set to default primary stack size in units of bytes. Set by
333 -- the -dnnn switch for the binder. A value of -1 indicates that no
334 -- default was set by the binder.
336 Default_Sec_Stack_Size : Int := -1;
338 -- Set to default secondary stack size in units of bytes. Set by
339 -- the -Dnnn switch for the binder. A value of -1 indicates that no
340 -- default was set by the binder, and that the default should be the
341 -- initial value of System.Secondary_Stack.Default_Secondary_Stack_Size.
343 Detect_Blocking : Boolean := False;
345 -- Set True to force the run time to raise Program_Error if calls to
346 -- potentially blocking operations are detected from protected actions.
348 Display_Compilation_Progress : Boolean := False;
349 -- GNATMAKE, GPRMAKE, GPRBUILD
350 -- Set True (-d switch) to display information on progress while compiling
351 -- files. Internal flag to be used in conjunction with an IDE (e.g GPS).
353 type Distribution_Stub_Mode_Type is
356 -- Normal mode, no generation/compilation of distribution stubs
358 Generate_Receiver_Stub_Body,
359 -- The unit being compiled is the RCI body, and the compiler will
360 -- generate the body for the receiver stubs and compile it.
362 Generate_Caller_Stub_Body);
363 -- The unit being compiled is the RCI spec, and the compiler will
364 -- generate the body for the caller stubs and compile it.
366 Distribution_Stub_Mode : Distribution_Stub_Mode_Type := No_Stubs;
368 -- This enumeration variable indicates the five states of distribution
369 -- annex stub generation/compilation.
371 Do_Not_Execute : Boolean := False;
373 -- Set to True if no actual compilations should be undertaken.
375 Dump_Source_Text : Boolean := False;
377 -- Set to True (by -gnatL) to dump source text intermingled with generated
378 -- code. Effective only if either of Debug/Print_Generated_Code is true.
380 Dynamic_Elaboration_Checks : Boolean := False;
382 -- Set True for dynamic elaboration checking mode, as set by the -gnatE
383 -- switch or by the use of pragma Elaboration_Checks (Dynamic).
385 Dynamic_Stack_Measurement : Boolean := False;
387 -- Set True to enable dynamic stack measurement (-u flag for gnatbind)
389 Dynamic_Stack_Measurement_Array_Size : Nat := 100;
391 -- Number of measurements we want to store during dynamic stack analysis.
392 -- When the buffer is full, non-storable results will be output on the fly.
393 -- The value is relevant only if Dynamic_Stack_Measurement is set. Set
394 -- by processing of -u flag for gnatbind.
396 Elab_Dependency_Output : Boolean := False;
398 -- Set to True to output complete list of elaboration constraints
400 Elab_Order_Output : Boolean := False;
402 -- Set to True to output chosen elaboration order
404 Elab_Warnings : Boolean := False;
406 -- Set to True to generate full elaboration warnings (-gnatwl)
408 Enable_Overflow_Checks : Boolean := False;
410 -- Set to True if -gnato (enable overflow checks) switch is set,
413 Error_Msg_Line_Length : Nat := 0;
415 -- Records the error message line length limit. If this is set to zero,
416 -- then we get the old style behavior, in which each call to the error
417 -- message routines generates one line of output as a separate message.
418 -- If it is set to a non-zero value, then continuation lines are folded
419 -- to make a single long message, and then this message is split up into
420 -- multiple lines not exceeding the specified length. Set by -gnatj=nn.
422 Exception_Handler_Encountered : Boolean := False;
424 -- This flag is set true if the parser encounters an exception handler.
425 -- It is used to set Warn_On_Exception_Propagation True if the restriction
426 -- No_Exception_Propagation is set.
428 Exception_Locations_Suppressed : Boolean := False;
430 -- This flag is set True if a Suppress_Exception_Locations configuration
431 -- pragma is currently active.
433 type Exception_Mechanism_Type is
434 -- Determines the handling of exceptions. See Exp_Ch11 for details
436 (Front_End_Setjmp_Longjmp_Exceptions,
437 -- Exceptions use setjmp/longjmp generated explicitly by the
438 -- front end (this includes gigi or other equivalent parts of
439 -- the code generator). AT END handlers are converted into
440 -- exception handlers by the front end in this mode.
442 Back_End_Exceptions);
443 -- Exceptions are handled by the back end. The front end simply
444 -- generates the handlers as they appear in the source, and AT
445 -- END handlers are left untouched (they are not converted into
446 -- exception handlers when operating in this mode.
447 pragma Convention (C, Exception_Mechanism_Type);
449 Exception_Mechanism : Exception_Mechanism_Type :=
450 Front_End_Setjmp_Longjmp_Exceptions;
452 -- Set to the appropriate value depending on the default as given in
453 -- system.ads (ZCX_By_Default, GCC_ZCX_Support).
454 -- The C convention is there to make this variable accessible to gigi.
456 Exception_Tracebacks : Boolean := False;
458 -- Set to True to store tracebacks in exception occurrences (-E)
460 Extensions_Allowed : Boolean := False;
462 -- Set to True by switch -gnatX if GNAT specific language extensions
463 -- are allowed. For example, the use of 'Constrained
with objects
of
464 -- generic types is a GNAT extension.
466 type External_Casing_Type
is (
467 As_Is
, -- External names cased as they appear in the Ada source
468 Uppercase
, -- External names forced to all uppercase letters
469 Lowercase
); -- External names forced to all lowercase letters
471 External_Name_Imp_Casing
: External_Casing_Type
:= Lowercase
;
473 -- The setting of this flag determines the casing of external names
474 -- when the name is implicitly derived from an entity name (i.e. either
475 -- no explicit External_Name or Link_Name argument is used, or, in the
476 -- case of extended DEC pragmas, the external name is given using an
477 -- identifier. The As_Is setting is not permitted here (since this would
478 -- create Ada source programs that were case sensitive).
480 External_Name_Exp_Casing
: External_Casing_Type
:= As_Is
;
482 -- The setting of this flag determines the casing of an external name
483 -- specified explicitly with a string literal. As_Is means the string
484 -- literal is used as given with no modification to the casing. If
485 -- Lowercase or Uppercase is set, then the string is forced to all
486 -- lowercase or all uppercase letters as appropriate. Note that this
487 -- setting has no effect if the external name is given using an identifier
488 -- in the case of extended DEC import/export pragmas (in this case the
489 -- casing is controlled by External_Name_Imp_Casing), and also has no
490 -- effect if an explicit Link_Name is supplied (a link name is always
491 -- used exactly as given).
493 External_Unit_Compilation_Allowed
: Boolean := False;
495 -- When True (set by gnatmake switch -x), allow compilation of sources
496 -- that are not part of any project file.
498 Fast_Math
: Boolean := False;
500 -- Indicates the current setting of Fast_Math mode, as set by the use
501 -- of a Fast_Math pragma (set on by Fast_Math (On)).
503 Float_Format
: Character := ' ';
505 -- A non-blank value indicates that a Float_Format pragma has been
506 -- processed, in which case this variable is set to 'I' for IEEE or
507 -- to 'V' for VAX. The setting of 'V' is only possible on OpenVMS
510 Float_Format_Long
: Character := ' ';
512 -- A non-blank value indicates that a Long_Float pragma has been
513 -- processed (this pragma is recognized only in OpenVMS versions
514 -- of GNAT), in which case this variable is set to D or G for
515 -- D_Float or G_Float.
517 Force_ALI_Tree_File
: Boolean := False;
519 -- Force generation of ALI file even if errors are encountered.
520 -- Also forces generation of tree file if -gnatt is also set.
522 Force_Checking_Of_Elaboration_Flags
: Boolean := False;
524 -- True if binding with forced checking of the elaboration flags
527 Force_Compilations
: Boolean := False;
528 -- GNATMAKE, GPRMAKE, GPRBUILD
529 -- Set to force recompilations even when the objects are up-to-date.
531 Full_Path_Name_For_Brief_Errors
: Boolean := False;
533 -- When True, in Brief_Output mode, each error message line
534 -- will start with the full path name of the source.
535 -- When False, only the file name without directory information
538 Full_List
: Boolean := False;
540 -- Set True to generate full source listing with embedded errors
542 Full_List_File_Name
: String_Ptr
:= null;
544 -- Set to file name to generate full source listing to named file (or if
545 -- the name is of the form .xxx, then to name.xxx where name is the source
546 -- file name with extension stripped.
548 Generate_Processed_File
: Boolean := False;
550 -- True when switch -gnateG is used. When True, create in a file
551 -- <source>.prep, if the source is preprocessed.
553 Generate_SCO
: Boolean := False;
555 -- True when switch -gnateS is used. When True, Source Coverage Obligation
556 -- (SCO) information is generated and output in the ALI file. See unit
557 -- Par_SCO for full details.
559 Generating_Code
: Boolean := False;
561 -- True if the frontend finished its work and has called the backend to
562 -- process the tree and generate the object file.
564 Global_Discard_Names
: Boolean := False;
566 -- True if a pragma Discard_Names appeared as a configuration pragma for
567 -- the current compilation unit.
569 GNAT_Mode
: Boolean := False;
571 -- True if compiling in GNAT system mode (-gnatg switch)
573 HLO_Active
: Boolean := False;
575 -- True if High Level Optimizer is activated (-gnatH switch)
577 Identifier_Character_Set
: Character;
579 -- This variable indicates the character set to be used for identifiers.
580 -- The possible settings are:
581 -- '1' Latin-5 (ISO-8859-1)
582 -- '2' Latin-5 (ISO-8859-2)
583 -- '3' Latin-5 (ISO-8859-3)
584 -- '4' Latin-5 (ISO-8859-4)
585 -- '5' Latin-5 (ISO-8859-5, Cyrillic)
586 -- '9' Latin-5 (ISO-8859-9)
587 -- 'p' PC (US, IBM page 437)
588 -- '8' PC (European, IBM page 850)
589 -- 'f' Full upper set (all distinct)
590 -- 'n' No upper characters (Ada 83 rules)
591 -- 'w' Latin-1 plus wide characters allowed in identifiers
593 -- The setting affects the set of letters allowed in identifiers and the
594 -- upper/lower case equivalences. It does not affect the interpretation of
595 -- character and string literals, which are always stored using the actual
596 -- coding in the source program. This variable is initialized to the
597 -- default value appropriate to the system (in Osint.Initialize), and then
598 -- reset if a command line switch is used to change the setting.
600 Ignore_Rep_Clauses
: Boolean := False;
602 -- Set True to ignore all representation clauses. Useful when compiling
603 -- code from foreign compilers for checking or ASIS purposes. Can be
604 -- set True by use of -gnatI.
606 Implementation_Unit_Warnings
: Boolean := True;
608 -- Set True to active warnings for use of implementation internal units.
609 -- Can be controlled by use of -gnatwi/-gnatwI.
611 Implicit_Packing
: Boolean := False;
613 -- If set True, then a Size attribute clause on an array is allowed to
614 -- cause implicit packing instead of generating an error message. Set by
615 -- use of pragma Implicit_Packing.
617 Ineffective_Inline_Warnings
: Boolean := False;
619 -- Set True to activate warnings if front-end inlining (-gnatN) is not
620 -- able to actually inline a particular call (or all calls). Can be
621 -- controlled by use of -gnatwp/-gnatwP.
623 Init_Or_Norm_Scalars
: Boolean := False;
625 -- Set True if a pragma Initialize_Scalars applies to the current unit.
626 -- Also set True if a pragma Normalize_Scalars applies.
628 Initialize_Scalars
: Boolean := False;
630 -- Set True if a pragma Initialize_Scalars applies to the current unit.
631 -- Note that Init_Or_Norm_Scalars is also set to True if this is True.
633 Initialize_Scalars_Mode1
: Character := 'I';
634 Initialize_Scalars_Mode2
: Character := 'N';
636 -- Set to two characters from -S switch (IN/LO/HI/EV/xx). The default
637 -- is IN (invalid values), used if no -S switch is used.
639 Inline_Active
: Boolean := False;
641 -- Set True to activate pragma Inline processing across modules. Default
642 -- for now is not to inline across module boundaries.
644 Interface_Library_Unit
: Boolean := False;
646 -- Set to True to indicate that at least one ALI file is an interface ALI:
647 -- then elaboration flag checks are to be generated in the binder
650 Generate_SCIL
: Boolean := False;
652 -- Set True to activate SCIL code generation.
654 Invalid_Value_Used
: Boolean := False;
656 -- Set True if a valid Invalid_Value attribute is encountered
658 Follow_Links_For_Files
: Boolean := False;
660 -- Set to True (-eL) to process the project files in trusted mode. If
661 -- Follow_Links is False, it is assumed that the project doesn't contain
662 -- any file duplicated through symbolic links (although the latter are
663 -- still valid if they point to a file which is outside of the project),
664 -- and that no directory has a name which is a valid source name.
666 Follow_Links_For_Dirs
: Boolean := True;
668 -- Set to True if directories can be links in this project, and therefore
669 -- additional system calls must be performed to ensure that we always see
670 -- the same full name for each directory.
672 Front_End_Inlining
: Boolean := False;
674 -- Set True to activate inlining by front-end expansion
676 Inline_Processing_Required
: Boolean := False;
678 -- Set True if inline processing is required. Inline processing is required
679 -- if an active Inline pragma is processed. The flag is set for a pragma
680 -- Inline or Inline_Always that is actually active.
682 In_Place_Mode
: Boolean := False;
684 -- Set True to store ALI and object files in place i.e. in the object
685 -- directory if these files already exist or in the source directory
688 Keep_Going
: Boolean := False;
689 -- GNATMAKE, GPRMAKE, GPRBUILD
690 -- When True signals to ignore compilation errors and keep processing
691 -- sources until there is no more work.
693 Keep_Temporary_Files
: Boolean := False;
695 -- When True the temporary files created by the GNAT driver are not
696 -- deleted. Set by switch -dn or qualifier /KEEP_TEMPORARY_FILES.
698 Leap_Seconds_Support
: Boolean := False;
700 -- Set to True to enable leap seconds support in Ada.Calendar and its
703 Link_Only
: Boolean := False;
704 -- GNATMAKE, GPRMAKE, GPRBUILD
705 -- Set to True to skip compile and bind steps (except when Bind_Only is
708 List_Restrictions
: Boolean := False;
710 -- Set to True to list restrictions pragmas that could apply to partition
712 List_Units
: Boolean := False;
714 -- List units in the active library for a compilation (-gnatu switch)
716 List_Closure
: Boolean := False;
718 -- List all sources in the closure of a main (-R gnatbind switch)
720 List_Dependencies
: Boolean := False;
722 -- When True gnatmake verifies that the objects are up to date and
723 -- outputs the list of object dependencies (-M switch).
724 -- Output depends if -a switch is used or not.
725 -- This list can be used directly in a Makefile.
727 List_Representation_Info
: Int
range 0 .. 3 := 0;
729 -- Set non-zero by -gnatR switch to list representation information.
730 -- The settings are as follows:
732 -- 0 = no listing of representation information (default as above)
733 -- 1 = list rep info for user defined record and array types
734 -- 2 = list rep info for all user defined types and objects
735 -- 3 = like 2, but variable fields are decoded symbolically
737 List_Representation_Info_To_File
: Boolean := False;
739 -- Set true by -gnatRs switch. Causes information from -gnatR/1/2/3 to be
740 -- written to file.rep (where file is the name of the source file) instead
741 -- of stdout. For example, if file x.adb is compiled using -gnatR2s then
742 -- representation info is written to x.adb.ref.
744 List_Representation_Info_Mechanisms
: Boolean := False;
746 -- Set true by -gnatRm switch. Causes information on mechanisms to be
747 -- included in the representation output information.
749 List_Preprocessing_Symbols
: Boolean := False;
751 -- Set to True if symbols for preprocessing a source are to be listed
752 -- before preprocessing occurs. Set to True by switch -s of gnatprep or
753 -- -s in preprocessing data file for the compiler.
755 type Create_Repinfo_File_Proc
is access procedure (Src
: String);
756 type Write_Repinfo_Line_Proc
is access procedure (Info
: String);
757 type Close_Repinfo_File_Proc
is access procedure;
758 -- Types used for procedure addresses below
760 Create_Repinfo_File_Access
: Create_Repinfo_File_Proc
:= null;
761 Write_Repinfo_Line_Access
: Write_Repinfo_Line_Proc
:= null;
762 Close_Repinfo_File_Access
: Close_Repinfo_File_Proc
:= null;
764 -- These three locations are left null when operating in non-compiler (e.g.
765 -- ASIS mode), but when operating in compiler mode, they are set to point
766 -- to the three corresponding procedures in Osint-C. The reason for this
767 -- slightly strange interface is to stop Repinfo from dragging in Osint in
768 -- ASIS mode, which would include lots of unwanted units in the ASIS build.
770 type Create_List_File_Proc
is access procedure (S
: String);
771 type Write_List_Info_Proc
is access procedure (S
: String);
772 type Close_List_File_Proc
is access procedure;
773 -- Types used for procedure addresses below
775 Create_List_File_Access
: Create_List_File_Proc
:= null;
776 Write_List_Info_Access
: Write_List_Info_Proc
:= null;
777 Close_List_File_Access
: Close_List_File_Proc
:= null;
779 -- These three locations are left null when operating in non-compiler
780 -- (e.g. from the binder), but when operating in compiler mode, they are
781 -- set to point to the three corresponding procedures in Osint-C. The
782 -- reason for this slightly strange interface is to prevent Repinfo
783 -- from dragging in Osint-C in the binder, which would include unwanted
784 -- units in the binder.
786 Locking_Policy
: Character := ' ';
788 -- Set to ' ' for the default case (no locking policy specified). Reset to
789 -- first character (uppercase) of locking policy name if a valid pragma
790 -- Locking_Policy is encountered.
792 Locking_Policy_Sloc
: Source_Ptr
:= No_Location
;
794 -- Remember location of previous Locking_Policy pragma. This is used for
795 -- inconsistency error messages. A value of System_Location is used if the
796 -- policy is set in package System.
798 Look_In_Primary_Dir
: Boolean := True;
799 -- GNAT, GNATBIND, GNATMAKE, GNATCLEAN
800 -- Set to False if a -I- was present on the command line. When True we are
801 -- allowed to look in the primary directory to locate other source or
804 Make_Steps
: Boolean := False;
806 -- Set to True when either Compile_Only, Bind_Only or Link_Only is
809 Main_Index
: Int
:= 0;
811 -- This is set to non-zero by gnatmake switch -eInnn to indicate that
812 -- the main program is the nnn unit in a multi-unit source file.
814 Mapping_File_Name
: String_Ptr
:= null;
816 -- File name of mapping between unit names, file names and path names.
817 -- (given by switch -gnatem)
819 Maximum_Messages
: Int
:= 9999;
821 -- Maximum default number of errors before compilation is terminated, or in
822 -- the case of GNAT, maximum number of warnings before further warnings are
823 -- suppressed. Can be overridden by -gnatm (GNAT) or -m (GNATBIND) switch.
825 Maximum_File_Name_Length
: Int
;
827 -- Maximum number of characters allowed in a file name, not counting the
828 -- extension, as set by the appropriate switch. If no switch is given,
829 -- then this value is initialized by Osint to the appropriate value.
831 Maximum_Processes
: Positive := 1;
832 -- GNATMAKE, GPRMAKE, GPRBUILD
833 -- Maximum number of processes that should be spawned to carry out
836 Minimal_Recompilation
: Boolean := False;
838 -- Set to True if minimal recompilation mode requested
840 Special_Exception_Package_Used
: Boolean := False;
842 -- Set to True if either of the unit GNAT.Most_Recent_Exception or
843 -- GNAT.Exception_Traces is with'ed. Used to inhibit transformation of
844 -- local raise statements into gotos in the presence of either package.
846 Multiple_Unit_Index
: Int
;
848 -- This is set non-zero if the current unit is being compiled in multiple
849 -- unit per file mode, meaning that the current unit is selected from the
850 -- sequence of units in the current source file, using the value stored
851 -- in this variable (e.g. 2 = select second unit in file). A value of
852 -- zero indicates that we are in normal (one unit per file) mode.
854 No_Main_Subprogram
: Boolean := False;
855 -- GNATMAKE, GNATBIND
856 -- Set to True if compilation/binding of a program without main
857 -- subprogram requested.
859 No_Run_Time_Mode
: Boolean := False;
861 -- This flag is set True if a No_Run_Time pragma is encountered. See
862 -- spec of Rtsfind for a full description of handling of this pragma.
864 No_Stdinc
: Boolean := False;
865 -- GNAT, GNATBIND, GNATMAKE, GNATFIND, GNATXREF
866 -- Set to True if no default source search dirs added to search list
868 No_Stdlib
: Boolean := False;
869 -- GNATMAKE, GNATBIND, GNATFIND, GNATXREF
870 -- Set to True if no default library search dirs added to search list
872 No_Strict_Aliasing
: Boolean := False;
874 -- Set True if pragma No_Strict_Aliasing with no parameters encountered
876 Normalize_Scalars
: Boolean := False;
878 -- Set True if a pragma Normalize_Scalars applies to the current unit.
879 -- Note that Init_Or_Norm_Scalars is also set to True if this is True.
881 Object_Directory_Present
: Boolean := False;
883 -- Set to True when an object directory is specified with option -D
885 type Operating_Mode_Type
is (Check_Syntax
, Check_Semantics
, Generate_Code
);
886 Operating_Mode
: Operating_Mode_Type
:= Generate_Code
;
888 -- Indicates the operating mode of the compiler. The default is generate
889 -- code, which runs the parser, semantics and backend. Switches can be
890 -- used to set syntax checking only mode, or syntax and semantics checking
891 -- only mode. Operating_Mode can also be modified as a result of detecting
892 -- errors during the compilation process. In particular if any serious
893 -- error is detected then this flag is reset from Generate_Code to
894 -- Check_Semantics after generating an error message.
896 Optimize_Alignment
: Character := 'O';
897 -- Setting of Optimize_Alignment, set to T/S/O for time/space/off. Can
898 -- be modified by use of pragma Optimize_Alignment.
900 Optimize_Alignment_Local
: Boolean := False;
901 -- Set True if Optimize_Alignment mode is set by a local configuration
902 -- pragma that overrides the gnat.adc (or other configuration file) default
903 -- so that the unit is not dependent on the default setting. Also always
904 -- set True for internal units, since these always have a default setting
905 -- of Optimize_Alignment (Off) that is enforced (essentially equivalent to
906 -- them all having such an explicit pragma in each unit).
908 Original_Operating_Mode
: Operating_Mode_Type
:= Generate_Code
;
910 -- Indicates the original operating mode of the compiler as set by compiler
911 -- options. This is identical to Operating_Mode except that this is not
912 -- affected by errors.
914 Optimization_Level
: Int
;
915 pragma Import
(C
, Optimization_Level
, "optimize");
916 -- Constant reflecting the optimization level (0,1,2,3 for -O0,-O1,-O2,-O3)
917 -- See jmissing.c and aamissing.c for definitions for dotnet/jgnat and
921 pragma Import
(C
, Optimize_Size
, "optimize_size");
922 -- Constant reflecting setting of -Os (optimize for size). Set to nonzero
923 -- in -Os mode and set to zero otherwise. See jmissing.c and aamissing.c
924 -- for definitions of "optimize_size" for dotnet/jgnat and GNAAMP backends
926 Output_File_Name_Present
: Boolean := False;
927 -- GNATBIND, GNAT, GNATMAKE, GPRMAKE
928 -- Set to True when the output C file name is given with option -o for
929 -- GNATBIND, when the object file name is given with option -gnatO for GNAT
930 -- or when the executable is given with option -o for GNATMAKE or GPRMAKE.
932 Output_Linker_Option_List
: Boolean := False;
934 -- True if output of list of linker options is requested (-K switch set)
936 Output_Object_List
: Boolean := False;
938 -- True if output of list of objects is requested (-O switch set)
940 Overflow_Checks_Unsuppressed
: Boolean := False;
942 -- Set to True if at least one occurrence of pragma Unsuppress
943 -- (All_Checks|Overflow_Checks) has been processed.
945 Persistent_BSS_Mode
: Boolean := False;
947 -- True if a Persistent_BSS configuration pragma is in effect, causing
948 -- potentially persistent data to be placed in the persistent_bss section.
950 Pessimistic_Elab_Order
: Boolean := False;
952 -- True if pessimistic elaboration order is to be chosen (-p switch set)
954 Polling_Required
: Boolean := False;
956 -- Set to True if polling for asynchronous abort is enabled by using
957 -- the -gnatP option for GNAT.
959 Preprocessing_Data_File
: String_Ptr
:= null;
961 -- Set by switch -gnatep=. The file name of the preprocessing data file.
963 Print_Generated_Code
: Boolean := False;
965 -- Set to True to enable output of generated code in source form. This
966 -- flag is set by the -gnatG switch.
968 Print_Standard
: Boolean := False;
970 -- Set to true to enable printing of package standard in source form.
971 -- This flag is set by the -gnatS switch
973 Propagate_Exceptions
: Boolean := False;
975 -- Indicates if subprogram descriptor exception tables should be
976 -- built for imported subprograms. Set True if a Propagate_Exceptions
977 -- pragma applies to the extended main unit.
979 type Usage
is (Unknown
, Not_In_Use
, In_Use
);
980 Project_File_In_Use
: Usage
:= Unknown
;
982 -- Indicates if a project file is used or not. Set to In_Use by the first
985 Queuing_Policy
: Character := ' ';
987 -- Set to ' ' for the default case (no queuing policy specified). Reset to
988 -- first character (uppercase) of locking policy name if a valid
989 -- Queuing_Policy pragma is encountered.
991 Queuing_Policy_Sloc
: Source_Ptr
:= No_Location
;
993 -- Remember location of previous Queuing_Policy pragma. This is used for
994 -- inconsistency error messages. A value of System_Location is used if the
995 -- policy is set in package System.
997 Quiet_Output
: Boolean := False;
998 -- GNATMAKE, GNATCLEAN, GPRMAKE, GPRBUILD, GPRCLEAN
999 -- Set to True if the tool should not have any output if there are no
1000 -- errors or warnings.
1002 Replace_In_Comments
: Boolean := False;
1004 -- Set to True if -C switch used
1006 RTS_Lib_Path_Name
: String_Ptr
:= null;
1007 RTS_Src_Path_Name
: String_Ptr
:= null;
1009 -- Set to the "adalib" and "adainclude" directories of the run time
1010 -- specified by --RTS=.
1012 RTS_Switch
: Boolean := False;
1013 -- GNAT, GNATMAKE, GNATBIND, GNATLS, GNATFIND, GNATXREF
1014 -- Set to True when the --RTS switch is set
1016 Run_Path_Option
: Boolean := True;
1017 -- GNATMAKE, GNATLINK
1018 -- Set to False when no run_path_option should be issued to the linker
1020 Search_Directory_Present
: Boolean := False;
1022 -- Set to True when argument is -I. Reset to False when next argument, a
1023 -- search directory path is taken into account. Note that this is quite
1024 -- different from other switches in this section in that it is only set in
1025 -- a transitory manner as a result of scanning a -I switch with no file
1026 -- name, and if set, is an indication that the next argument is to be
1027 -- treated as a file name.
1029 Sec_Stack_Used
: Boolean := False;
1031 -- Set True if generated code uses the System.Secondary_Stack package. For
1032 -- the binder, set if any unit uses the secondary stack package.
1034 Setup_Projects
: Boolean := False;
1036 -- Set to True for GNAT SETUP: the Project Manager creates non existing
1037 -- object, library and exec directories.
1039 Shared_Libgnat
: Boolean;
1041 -- Set to True if a shared libgnat is requested by using the -shared option
1042 -- for GNATBIND and to False when using the -static option. The value of
1043 -- this flag is set by Gnatbind.Scan_Bind_Arg.
1045 Sprint_Line_Limit
: Nat
:= 72;
1046 -- Limit values for chopping long lines in Sprint output, can be reset
1047 -- by use of NNN parameter with -gnatG or -gnatD switches.
1049 Stack_Checking_Enabled
: Boolean;
1051 -- Set to indicate if -fstack-check switch is set for the compilation. True
1052 -- means that the switch is set, so that stack checking is enabled. False
1053 -- means that the switch is not set (no stack checking). This value is
1054 -- obtained from the external imported value flag_stack_check in the gcc
1055 -- backend (see Frontend) and may be referenced throughout the compilation
1058 Style_Check
: Boolean := False;
1060 -- Set True to perform style checks. Activates checks carried out in
1061 -- package Style (see body of this package for details of checks) This
1062 -- flag is set True by either the -gnatg or -gnaty switches.
1064 Suppress_All_Inlining
: Boolean := False;
1066 -- Set by -fno-inline. Suppresses all inlining, both front end and back end
1067 -- regardless of any other switches that are set.
1069 Suppress_Control_Flow_Optimizations
: Boolean := False;
1071 -- Set by -fpreserve-control-flow. Suppresses control flow optimizations
1072 -- that interfere with coverage analysis based on the object code.
1074 System_Extend_Pragma_Arg
: Node_Id
:= Empty
;
1076 -- Set non-empty if and only if a correct Extend_System pragma was present
1077 -- in which case it points to the argument of the pragma, and the name can
1078 -- be located as Chars (Expression (System_Extend_Pragma_Arg)).
1080 System_Extend_Unit
: Node_Id
:= Empty
;
1082 -- This is set to Empty if GNAT_Mode is set, since pragma Extend_System
1083 -- is never appropriate in GNAT_Mode (and causes troubles, including
1084 -- bogus circularities, if we try to compile the run-time library with
1085 -- a System extension). If GNAT_Mode is not set, then System_Extend_Unit
1086 -- is a copy of the value set in System_Extend_Pragma_Arg.
1088 Subunits_Missing
: Boolean := False;
1090 -- This flag is set true if missing subunits are detected with code
1091 -- generation active. This causes code generation to be skipped.
1093 Suppress_Checks
: Boolean := False;
1095 -- Set to True if -gnatp (suppress all checks) switch present.
1097 Suppress_Options
: Suppress_Array
;
1099 -- Flags set True to suppress corresponding check, i.e. add an implicit
1100 -- pragma Suppress at the outer level of each unit compiled. Note that
1101 -- these suppress actions can be overridden by the use of the Unsuppress
1102 -- pragma. This variable is initialized by Osint.Initialize.
1104 Suppress_Back_Annotation
: Boolean := False;
1106 -- This flag is set True if back annotation of representation information
1107 -- is to be suppressed. This is set if neither -gnatt or -gnatR0-3 is set.
1108 -- This avoids unnecessary time being spent on back annotation.
1110 Table_Factor
: Int
:= 1;
1112 -- Factor by which all initial table sizes set in Alloc are multiplied.
1113 -- Used in Table to calculate initial table sizes (the initial table size
1114 -- is the value in Alloc, used as the Table_Initial parameter value,
1115 -- multiplied by the factor given here. The default value is used if no
1116 -- -gnatT switch appears.
1118 Tagged_Type_Expansion
: Boolean := True;
1120 -- Set True if tagged types and interfaces should be expanded by the
1121 -- front-end. If False, the original tree is left unexpanded for tagged
1122 -- types and dispatching calls, assuming the underlying target supports
1123 -- it (e.g. in the JVM case).
1125 Task_Dispatching_Policy
: Character := ' ';
1127 -- Set to ' ' for the default case (no task dispatching policy specified).
1128 -- Reset to first character (uppercase) of task dispatching policy name
1129 -- if a valid Task_Dispatching_Policy pragma is encountered.
1131 Task_Dispatching_Policy_Sloc
: Source_Ptr
:= No_Location
;
1133 -- Remember location of previous Task_Dispatching_Policy pragma. This is
1134 -- used for inconsistency error messages. A value of System_Location is
1135 -- used if the policy is set in package System.
1137 Tasking_Used
: Boolean := False;
1138 -- Set True if any tasking construct is encountered. Used to activate the
1139 -- output of the Q, L and T lines in ALI files.
1141 Time_Slice_Set
: Boolean := False;
1143 -- Set True if a pragma Time_Slice is processed in the main unit, or
1144 -- if the -gnatTnn switch is present to set a time slice value.
1146 Time_Slice_Value
: Nat
;
1148 -- Time slice value. Valid only if Time_Slice_Set is True, i.e. if
1149 -- Time_Slice pragma has been processed. Set to the time slice value in
1150 -- microseconds. Negative values are stored as zero, and the value is not
1151 -- larger than 1_000_000_000 (1000 seconds). Values larger than this are
1152 -- reset to this maximum. This can also be set with the -gnatTnn switch.
1154 Tolerate_Consistency_Errors
: Boolean := False;
1156 -- Tolerate time stamp and other consistency errors. If this flag is set to
1157 -- True (-t), then inconsistencies result in warnings rather than errors.
1159 Treat_Restrictions_As_Warnings
: Boolean := False;
1161 -- Set True to treat pragma Restrictions as Restriction_Warnings. Set by
1164 Tree_Output
: Boolean := False;
1166 -- Set to True (-gnatt) to generate output tree file
1168 True_VMS_Target
: Boolean := False;
1169 -- Set True if we are on a VMS target. The setting of this flag reflects
1170 -- the true state of the compile, unlike Targparm.OpenVMS_On_Target which
1171 -- can also be true when debug flag m is set (-gnatdm). This is used in the
1172 -- few cases where we do NOT want -gnatdm to trigger the VMS behavior.
1174 Try_Semantics
: Boolean := False;
1176 -- Flag set to force attempt at semantic analysis, even if parser errors
1177 -- occur. This will probably cause blowups at this stage in the game. On
1178 -- the other hand, most such blowups will be caught cleanly and simply
1179 -- say compilation abandoned. This flag is set to True by -gnatq or -gnatQ.
1181 Unchecked_Shared_Lib_Imports
: Boolean := False;
1183 -- Set to True when shared library projects are allowed to import projects
1184 -- that are not shared library projects. Set by switch
1185 -- --unchecked-shared-lib-imports.
1187 Undefined_Symbols_Are_False
: Boolean := False;
1189 -- Set to True by switch -u of gnatprep or -u in the preprocessing data
1190 -- file for the compiler. Indicates that while preprocessing sources,
1191 -- symbols that are not defined have the value FALSE.
1193 Unique_Error_Tag
: Boolean := Tag_Errors
;
1195 -- Indicates if error messages are to be prefixed by the string error:
1196 -- Initialized from Tag_Errors, can be forced on with the -gnatU switch.
1198 Universal_Addressing_On_AAMP
: Boolean := False;
1200 -- Indicates if library-level objects should be accessed and updated using
1201 -- universal addressing instructions on the AAMP architecture. This flag is
1202 -- set to True when pragma Universal_Data is given as a configuration
1205 Unreserve_All_Interrupts
: Boolean := False;
1207 -- Normally set False, set True if a valid Unreserve_All_Interrupts pragma
1208 -- appears anywhere in the main unit for GNAT, or if any ALI file has the
1209 -- corresponding attribute set in GNATBIND.
1211 Upper_Half_Encoding
: Boolean := False;
1213 -- Normally set False, indicating that upper half ISO 8859-1 characters are
1214 -- used in the normal way to represent themselves. If the wide character
1215 -- encoding method uses the upper bit for this encoding, then this flag is
1216 -- set True, and upper half characters in the source indicate the start of
1217 -- a wide character sequence. Set by -gnatW or -W switches.
1219 Usage_Requested
: Boolean := False;
1220 -- GNAT, GNATBIND, GNATMAKE
1221 -- Set to True if -h (-gnath for the compiler) switch encountered
1222 -- requesting usage information
1224 Use_Pragma_Linker_Constructor
: Boolean := False;
1226 -- True if pragma Linker_Constructor applies to adainit
1228 Use_VADS_Size
: Boolean := False;
1230 -- Set to True if a valid pragma Use_VADS_Size is processed
1232 Validity_Checks_On
: Boolean := True;
1234 -- This flag determines if validity checking is on or off. The initial
1235 -- state is on, and the required default validity checks are active. The
1236 -- actual set of checks that is performed if Validity_Checks_On is set is
1237 -- defined by the switches in package Validsw. The Validity_Checks_On flag
1238 -- is controlled by pragma Validity_Checks (On | Off), and also some
1239 -- generated compiler code (typically code that has to do with validity
1240 -- check generation) is compiled with this flag set to False. This flag is
1241 -- set to False by the -gnatp switch.
1243 Verbose_Mode
: Boolean := False;
1244 -- GNAT, GNATBIND, GNATMAKE, GNATLINK, GNATLS, GNATNAME, GNATCLEAN,
1245 -- GPRMAKE, GPRBUILD, GPRCLEAN
1246 -- Set to True to get verbose mode (full error message text and location
1247 -- information sent to standard output, also header, copyright and summary)
1249 type Verbosity_Level_Type
is (None
, Low
, Medium
, High
);
1250 Verbosity_Level
: Verbosity_Level_Type
:= High
;
1251 -- GNATMAKE, GPRMAKE
1252 -- Modified by gnatmake or gprmake switches -v, -vl, -vm, -vh. Indicates
1253 -- the level of verbosity of informational messages:
1255 -- In Low Verbosity, the reasons why a source is recompiled, the name
1256 -- of the executable and the reason it must be rebuilt is output.
1258 -- In Medium Verbosity, additional lines are output for each ALI file
1261 -- In High Verbosity, additional lines are output when the ALI file
1262 -- is part of an Ada library, is read-only or is part of the runtime.
1264 Warn_On_Ada_2005_Compatibility
: Boolean := True;
1266 -- Set to True to generate all warnings on Ada 2005 compatibility issues,
1267 -- including warnings on Ada 2005 obsolescent features used in Ada 2005
1268 -- mode. Set False by -gnatwY.
1270 Warn_On_Parameter_Order
: Boolean := False;
1272 -- Set to True to generate warnings for cases where the argument list for
1273 -- a call is a sequence of identifiers that match the formal identifiers,
1274 -- but are in the wrong order.
1276 Warn_On_Assertion_Failure
: Boolean := True;
1278 -- Set to True to activate warnings on assertions that can be determined
1279 -- at compile time will always fail. Set false by -gnatw.A.
1281 Warn_On_Assumed_Low_Bound
: Boolean := True;
1283 -- Set to True to activate warnings for string parameters that are indexed
1284 -- with literals or S'Length, presumably assuming a lower bound of one. Set
1285 -- False by -gnatwW.
1287 Warn_On_Bad_Fixed_Value
: Boolean := False;
1289 -- Set to True to generate warnings for static fixed-point expression
1290 -- values that are not an exact multiple of the small value of the type.
1292 Warn_On_Biased_Representation
: Boolean := True;
1294 -- Set to True to generate warnings for size clauses, component clauses
1295 -- and component_size clauses that force biased representation. Set False
1298 Warn_On_Constant
: Boolean := False;
1300 -- Set to True to generate warnings for variables that could be declared
1301 -- as constants. Modified by use of -gnatwk/K.
1303 Warn_On_Deleted_Code
: Boolean := False;
1305 -- Set to True to generate warnings for code deleted by the front end
1306 -- for conditional statements whose outcome is known at compile time.
1307 -- Modified by use of -gnatwt/T.
1309 Warn_On_Dereference
: Boolean := False;
1311 -- Set to True to generate warnings for implicit dereferences for array
1312 -- indexing and record component access. Modified by use of -gnatwd/D.
1314 Warn_On_Export_Import
: Boolean := True;
1316 -- Set to True to generate warnings for suspicious use of export or
1317 -- import pragmas. Modified by use of -gnatwx/X.
1319 Warn_On_Hiding
: Boolean := False;
1321 -- Set to True to generate warnings if a declared entity hides another
1322 -- entity. The default is that this warning is suppressed.
1324 Warn_On_Modified_Unread
: Boolean := False;
1326 -- Set to True to generate warnings if a variable is assigned but is never
1327 -- read. Also controls warnings for similar cases involving out parameters,
1328 -- but only if there is only one out parameter for the procedure involved.
1329 -- The default is that this warning is suppressed.
1331 Warn_On_All_Unread_Out_Parameters
: Boolean := False;
1333 -- Set to True to generate warnings in all cases where a variable is
1334 -- modified by being passed as to an OUT formal, but the resulting value is
1335 -- never read. The default is that this warning is suppressed, except in
1338 Warn_On_No_Value_Assigned
: Boolean := True;
1340 -- Set to True to generate warnings if no value is ever assigned to a
1341 -- variable that is at least partially uninitialized. Set to false to
1342 -- suppress such warnings. The default is that such warnings are enabled.
1344 Warn_On_Non_Local_Exception
: Boolean := False;
1346 -- Set to True to generate warnings for non-local exception raises and also
1347 -- handlers that can never handle a local raise. This warning is only ever
1348 -- generated if pragma Restrictions (No_Exception_Propagation) is set. The
1349 -- default is not to generate the warnings except that if the source has
1350 -- at least one exception handler, and this restriction is set, and the
1351 -- warning was not explicitly turned off, then it is turned on by default.
1353 No_Warn_On_Non_Local_Exception
: Boolean := False;
1355 -- This is set to True if the above warning is explicitly suppressed. We
1356 -- use this to avoid turning it on by default when No_Exception_Propagation
1357 -- restriction is set and an exception handler is present.
1359 Warn_On_Obsolescent_Feature
: Boolean := False;
1361 -- Set to True to generate warnings on use of any feature in Annex or if a
1362 -- subprogram is called for which a pragma Obsolescent applies.
1364 Warn_On_Questionable_Missing_Parens
: Boolean := True;
1366 -- Set to True to generate warnings for cases where parentheses are missing
1367 -- and the usage is questionable, because the intent is unclear.
1369 Warn_On_Redundant_Constructs
: Boolean := False;
1371 -- Set to True to generate warnings for redundant constructs (e.g. useless
1372 -- assignments/conversions). The default is that this warning is disabled.
1374 Warn_On_Object_Renames_Function
: Boolean := False;
1376 -- Set to True to generate warnings when a function result is renamed as
1377 -- an object. The default is that this warning is disabled.
1379 Warn_On_Reverse_Bit_Order
: Boolean := True;
1381 -- Set to True to generate warning (informational) messages for component
1382 -- clauses that are affected by non-standard bit-order. The default is
1383 -- that this warning is enabled.
1385 Warn_On_Suspicious_Modulus_Value
: Boolean := True;
1387 -- Set to True to generate warnings for suspicious modulus values. The
1388 -- default is that this warning is enabled.
1390 Warn_On_Unchecked_Conversion
: Boolean := True;
1392 -- Set to True to generate warnings for unchecked conversions that may have
1393 -- non-portable semantics (e.g. because sizes of types differ). The default
1394 -- is that this warning is enabled.
1396 Warn_On_Unrecognized_Pragma
: Boolean := True;
1398 -- Set to True to generate warnings for unrecognized pragmas. The default
1399 -- is that this warning is enabled.
1401 Warn_On_Unrepped_Components
: Boolean := False;
1403 -- Set to True to generate warnings for the case of components of record
1404 -- which have a record representation clause but this component does not
1405 -- have a component clause. The default is that this warning is disabled.
1407 Warn_On_Warnings_Off
: Boolean := False;
1409 -- Set to True to generate warnings for use of Pragma Warnings (Off, ent),
1410 -- where either the pragma is never used, or it could be replaced by a
1411 -- pragma Unmodified or Unreferenced.
1413 type Warning_Mode_Type
is (Suppress
, Normal
, Treat_As_Error
);
1414 Warning_Mode
: Warning_Mode_Type
:= Normal
;
1416 -- Controls treatment of warning messages. If set to Suppress, warning
1417 -- messages are not generated at all. In Normal mode, they are generated
1418 -- but do not count as errors. In Treat_As_Error mode, warning messages
1419 -- are generated and are treated as errors.
1421 Wide_Character_Encoding_Method
: WC_Encoding_Method
:= WCEM_Brackets
;
1423 -- Method used for encoding wide characters in the source program. See
1424 -- description of type in unit System.WCh_Con for a list of the methods
1425 -- that are currently supported. Note that brackets notation is always
1426 -- recognized in source programs regardless of the setting of this
1427 -- variable. The default setting causes only the brackets notation to be
1428 -- recognized. If this is the main unit, this setting also controls the
1429 -- output of the W=? parameter in the ALI file, which is used to provide
1430 -- the default for encoding [Wide_[Wide_]]Text_IO files. For the binder,
1431 -- the value set here overrides this main unit default.
1433 Wide_Character_Encoding_Method_Specified
: Boolean := False;
1435 -- Set True if the value in Wide_Character_Encoding_Method was set as
1436 -- a result of an explicit -gnatW? or -W? switch. False otherwise.
1438 Xref_Active
: Boolean := True;
1440 -- Set if cross-referencing is enabled (i.e. xref info in ALI files)
1442 Zero_Formatting
: Boolean := False;
1444 -- Do no formatting (no title, no leading spaces, no empty lines) in
1445 -- auxiliary outputs (-e, -K, -l, -R).
1447 ----------------------------
1448 -- Configuration Settings --
1449 ----------------------------
1451 -- These are settings that are used to establish the mode at the start of
1452 -- each unit. The values defined below can be affected either by command
1453 -- line switches, or by the use of appropriate configuration pragmas in a
1454 -- configuration pragma file.
1456 Ada_Version_Config
: Ada_Version_Type
;
1458 -- This is the value of the configuration switch for the Ada 83 mode, as
1459 -- set by the command line switches -gnat83/95/05, and possibly modified by
1460 -- the use of configuration pragmas Ada_83/Ada95/Ada05. This switch is used
1461 -- to set the initial value for Ada_Version mode at the start of analysis
1462 -- of a unit. Note however, that the setting of this flag is ignored for
1463 -- internal and predefined units (which are always compiled in the most up
1464 -- to date version of Ada).
1466 Ada_Version_Explicit_Config
: Ada_Version_Type
;
1468 -- This is set in the same manner as Ada_Version_Config. The difference is
1469 -- that the setting of this flag is not ignored for internal and predefined
1470 -- units, which for some purposes do indeed access this value, regardless
1471 -- of the fact that they are compiled the most up to date ada version).
1473 Assertions_Enabled_Config
: Boolean;
1475 -- This is the value of the configuration switch for assertions enabled
1476 -- mode, as possibly set by the command line switch -gnata, and possibly
1477 -- modified by the use of the configuration pragma Assertion_Policy.
1479 Assume_No_Invalid_Values_Config
: Boolean;
1481 -- This is the value of the configuration switch for assuming "no invalid
1482 -- values enabled" mode, as possibly set by the command line switch
1483 -- -gnatB, and possibly modified by the use of the configuration pragma
1484 -- Assume_No_Invalid_Values.
1486 Check_Policy_List_Config
: Node_Id
;
1488 -- This points to the list of N_Pragma nodes for Check_Policy pragmas
1489 -- that are linked through the Next_Pragma fields, with the list being
1490 -- terminated by Empty. The order is most recently processed first. This
1491 -- list includes only those pragmas in configuration pragma files.
1493 Debug_Pragmas_Enabled_Config
: Boolean;
1495 -- This is the value of the configuration switch for debug pragmas enabled
1496 -- mode, as possibly set by the command line switch -gnata and possibly
1497 -- modified by the use of the configuration pragma Debug_Policy.
1499 Dynamic_Elaboration_Checks_Config
: Boolean := False;
1501 -- Set True for dynamic elaboration checking mode, as set by the -gnatE
1502 -- switch or by the use of pragma Elaboration_Checking (Dynamic).
1504 Exception_Locations_Suppressed_Config
: Boolean := False;
1506 -- Set True by use of the configuration pragma Suppress_Exception_Messages
1508 Extensions_Allowed_Config
: Boolean;
1510 -- This is the flag that indicates whether extensions are allowed. It can
1511 -- be set True either by use of the -gnatX switch, or by use of the
1512 -- configuration pragma Extensions_Allowed (On). It is always set to True
1513 -- for internal GNAT units, since extensions are always permitted in such
1516 External_Name_Exp_Casing_Config
: External_Casing_Type
;
1518 -- This is the value of the configuration switch that controls casing of
1519 -- external symbols for which an explicit external name is given. It can be
1520 -- set to Uppercase by the command line switch -gnatF, and further modified
1521 -- by the use of the configuration pragma External_Name_Casing in the
1522 -- gnat.adc file. This flag is used to set the initial value for
1523 -- External_Name_Exp_Casing at the start of analyzing each unit. Note
1524 -- however that the setting of this flag is ignored for internal and
1525 -- predefined units (which are always compiled with As_Is mode).
1527 External_Name_Imp_Casing_Config
: External_Casing_Type
;
1529 -- This is the value of the configuration switch that controls casing of
1530 -- external symbols where the external name is implicitly given. It can be
1531 -- set to Uppercase by the command line switch -gnatF, and further modified
1532 -- by the use of the configuration pragma External_Name_Casing in the
1533 -- gnat.adc file. This flag is used to set the initial value for
1534 -- External_Name_Imp_Casing at the start of analyzing each unit. Note
1535 -- however that the setting of this flag is ignored for internal and
1536 -- predefined units (which are always compiled with Lowercase mode).
1538 Fast_Math_Config
: Boolean;
1540 -- This is the value of the configuration switch that controls Fast_Math
1541 -- mode, as set by a Fast_Math pragma in configuration pragmas. It is
1542 -- used to set the initial value of Fast_Math at the start of each new
1543 -- compilation unit.
1545 Optimize_Alignment_Config
: Character;
1547 -- This is the value of the configuration switch that controls the
1548 -- alignment optimization mode, as set by an Optimize_Alignment pragma.
1549 -- It is used to set the initial value of Optimize_Alignment at the start
1550 -- of each new compilation unit, except that it is always set to 'O' (off)
1551 -- for internal units.
1553 Persistent_BSS_Mode_Config
: Boolean;
1555 -- This is the value of the configuration switch that controls whether
1556 -- potentially persistent data is to be placed in the persistent_bss
1557 -- section. It can be set True by use of the pragma Persistent_BSS.
1558 -- This flag is used to set the initial value of Persistent_BSS_Mode
1559 -- at the start of each compilation unit, except that it is always
1560 -- set False for predefined units.
1562 Polling_Required_Config
: Boolean;
1564 -- This is the value of the configuration switch that controls polling
1565 -- mode. It can be set True by the command line switch -gnatP, and then
1566 -- further modified by the use of pragma Polling in the gnat.adc file. This
1567 -- flag is used to set the initial value for Polling_Required at the start
1568 -- of analyzing each unit.
1570 Use_VADS_Size_Config
: Boolean;
1572 -- This is the value of the configuration switch that controls the use of
1573 -- VADS_Size instead of Size wherever the attribute Size is used. It can
1574 -- be set True by the use of the pragma Use_VADS_Size in the gnat.adc file.
1575 -- This flag is used to set the initial value for Use_VADS_Size at the
1576 -- start of analyzing each unit. Note however that the setting of this flag
1577 -- is ignored for internal and predefined units (which are always compiled
1578 -- with the standard Size semantics).
1580 type Config_Switches_Type
is private;
1581 -- Type used to save values of the switches set from Config values
1583 procedure Save_Opt_Config_Switches
(Save
: out Config_Switches_Type
);
1584 -- This procedure saves the current values of the switches which are
1585 -- initialized from the above Config values, and then resets these switches
1586 -- according to the Config value settings.
1588 procedure Set_Opt_Config_Switches
1589 (Internal_Unit
: Boolean;
1590 Main_Unit
: Boolean);
1591 -- This procedure sets the switches to the appropriate initial values. The
1592 -- parameter Internal_Unit is True for an internal or predefined unit, and
1593 -- affects the way the switches are set (see above). Main_Unit is true if
1594 -- switches are being set for the main unit (this affects setting of the
1595 -- assert/debug pragma switches, which are normally set false by default
1596 -- for an internal unit, except when the internal unit is the main unit,
1597 -- in which case we use the command line settings).
1599 procedure Restore_Opt_Config_Switches
(Save
: Config_Switches_Type
);
1600 -- This procedure restores a set of switch values previously saved by a
1601 -- call to Save_Opt_Switches.
1603 procedure Register_Opt_Config_Switches
;
1604 -- This procedure is called after processing the gnat.adc file and other
1605 -- configuration pragma files to record the values of the Config switches,
1606 -- as possibly modified by the use of command line switches and pragmas
1607 -- appearing in these files.
1609 ------------------------
1610 -- Other Global Flags --
1611 ------------------------
1613 Expander_Active
: Boolean := False;
1614 -- A flag that indicates if expansion is active (True) or deactivated
1615 -- (False). When expansion is deactivated all calls to expander routines
1616 -- have no effect. Note that the initial setting of False is merely to
1617 -- prevent saving of an undefined value for an initial call to the
1618 -- Expander_Mode_Save_And_Set procedure. For more information on the use of
1619 -- this flag, see package Expander. Indeed this flag might more logically
1620 -- be in the spec of Expander, but it is referenced by Errout, and it
1621 -- really seems wrong for Errout to depend on Expander.
1623 Static_Dispatch_Tables
: Boolean := True;
1624 -- This flag indicates if the backend supports generation of statically
1625 -- allocated dispatch tables. If it is True, then the front end will
1626 -- generate static aggregates for dispatch tables that contain forward
1627 -- references to addresses of subprograms not seen yet, and the back end
1628 -- must be prepared to handle this case. If it is False, then the front
1629 -- end generates assignments to initialize the dispatch table, and there
1630 -- are no such forward references. By default we build statically allocated
1631 -- dispatch tables for all library level tagged types in all platforms.This
1632 -- behavior can be disabled using switch -gnatd.t which will set this flag
1633 -- to False and revert to the previous dynamic behavior.
1635 -----------------------
1636 -- Tree I/O Routines --
1637 -----------------------
1639 procedure Tree_Read
;
1640 -- Reads switch settings from current tree file using Tree_Read
1642 procedure Tree_Write
;
1643 -- Writes out switch settings to current tree file using Tree_Write
1645 --------------------------
1646 -- ASIS Version Control --
1647 --------------------------
1649 -- These two variables (Tree_Version_String and Tree_ASIS_Version_Number)
1650 -- are supposed to be used in the GNAT/ASIS version check performed in
1651 -- the ASIS code (this package is also a part of the ASIS implementation).
1652 -- They are set by Tree_Read procedure, so they represent the version
1653 -- number (and the version string) of the compiler which has created the
1654 -- tree, and they are supposed to be compared with the corresponding values
1655 -- from the Tree_IO and Gnatvsn packages which also are a part of ASIS
1658 Tree_Version_String
: String_Access
;
1659 -- Used to store the compiler version string read from a tree file to check
1660 -- if it is from the same date as stored in the version string in Gnatvsn.
1661 -- We require that ASIS Pro can be used only with GNAT Pro, but we allow
1662 -- non-Pro ASIS and ASIS-based tools to be used with any version of the
1663 -- GNAT compiler. Therefore, we need the possibility to compare the dates
1664 -- of the corresponding source sets, using version strings that may be
1665 -- of different lengths.
1667 Tree_ASIS_Version_Number
: Int
;
1668 -- Used to store the ASIS version number read from a tree file to check if
1669 -- it is the same as stored in the ASIS version number in Tree_IO.
1673 -- The following type is used to save and restore settings of switches in
1674 -- Opt that represent the configuration (i.e. result of config pragmas).
1676 -- Note that Ada_Version_Explicit is not included, since this is a sticky
1677 -- flag that once set does not get reset, since the whole idea of this flag
1678 -- is to record the setting for the main unit.
1680 type Config_Switches_Type
is record
1681 Ada_Version
: Ada_Version_Type
;
1682 Ada_Version_Explicit
: Ada_Version_Type
;
1683 Assertions_Enabled
: Boolean;
1684 Assume_No_Invalid_Values
: Boolean;
1685 Check_Policy_List
: Node_Id
;
1686 Debug_Pragmas_Enabled
: Boolean;
1687 Dynamic_Elaboration_Checks
: Boolean;
1688 Exception_Locations_Suppressed
: Boolean;
1689 Extensions_Allowed
: Boolean;
1690 External_Name_Exp_Casing
: External_Casing_Type
;
1691 External_Name_Imp_Casing
: External_Casing_Type
;
1692 Fast_Math
: Boolean;
1693 Optimize_Alignment
: Character;
1694 Optimize_Alignment_Local
: Boolean;
1695 Persistent_BSS_Mode
: Boolean;
1696 Polling_Required
: Boolean;
1697 Use_VADS_Size
: Boolean;
1700 -- The following declarations are for GCC version dependent flags. We do
1701 -- not let client code in the compiler test GCC_Version directly, but
1702 -- instead use deferred constants for relevant feature tags.
1704 -- Note: there currently are no such constants defined in this section,
1705 -- since the compiler front end is currently entirely independent of the
1706 -- GCC version, which is a desirable state of affairs.
1708 function get_gcc_version
return Int
;
1709 pragma Import
(C
, get_gcc_version
, "get_gcc_version");
1711 GCC_Version
: constant Nat
:= get_gcc_version
;
1713 -- Indicates which version of gcc is in use (3 = 3.x, 4 = 4.x). Note that
1714 -- gcc 2.8.1 (which used to be a value of 2) is no longer supported.