1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2005, 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 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 -- This package contains global flags set by the initialization
35 -- routine from the command line and referenced throughout the compiler,
36 -- the binder, gnatmake or other GNAT tools. The comments indicate which
37 -- options are used by which programs (GNAT, GNATBIND, GNATMAKE, etc).
39 with Gnatvsn; use Gnatvsn;
40 with Hostparm; use Hostparm;
41 with Types; use Types;
43 with System.WCh_Con; use System.WCh_Con;
44 with GNAT.Strings; use GNAT.Strings;
48 ----------------------------------------------
49 -- Settings of Modes for Current Processing --
50 ----------------------------------------------
52 -- The following mode values represent the current state of processing.
53 -- The values set here are the default values. Unless otherwise noted,
54 -- the value may be reset in Switch with an appropropiate switch. In
55 -- some cases, the values can also be modified by pragmas, and in the
56 -- case of some binder variables, Gnatbind.Scan_Bind_Arg may modify
57 -- the default values.
59 Ada_Bind_File : Boolean := True;
61 -- Set True if binder file to be generated in Ada rather than C
63 type Ada_Version_Type is (Ada_83, Ada_95, Ada_05);
64 -- Versions of Ada for Ada_Version below. Note that these are ordered,
65 -- so that tests like Ada_Version >= Ada_95 are legitimate and useful.
67 Ada_Version_Default : Ada_Version_Type := Ada_95;
69 -- Default Ada version if no switch given
71 Ada_Version : Ada_Version_Type := Ada_Version_Default;
73 -- Current Ada version for compiler
75 Ada_Version_Runtime : Ada_Version_Type := Ada_05;
77 -- Ada version used to compile the runtime
79 Ada_Final_Suffix : constant String := "final";
80 Ada_Final_Name : String_Ptr := new String'("ada" & Ada_Final_Suffix);
82 -- The name of the procedure that performs the finalization at the end of
83 -- execution. This variable may be modified by Gnatbind.Scan_Bind_Arg.
85 Ada_Init_Suffix : constant String := "init";
86 Ada_Init_Name : String_Ptr := new String'("ada" & Ada_Init_Suffix);
88 -- The name of the procedure that performs initialization at the start
89 -- of execution. This variable may be modified by Gnatbind.Scan_Bind_Arg.
91 Ada_Main_Name_Suffix : constant String := "main";
93 -- The suffix for Ada_Main_Name. Defined as a constant here so that it
94 -- can be referenced in a uniform manner to create either the default
95 -- value of Ada_Main_Name (declared below), or the non-default name
96 -- set by Gnatbind.Scan_Bind_Arg.
98 Ada_Main_Name : String_Ptr := new String'("ada_" & Ada_Main_Name_Suffix);
100 -- The name of the Ada package generated by the binder (when in Ada mode).
101 -- This variable may be modified by Gnatbind.Scan_Bind_Arg.
103 Address_Clause_Overlay_Warnings : Boolean := True;
105 -- Set False to disable address clause warnings
107 Address_Is_Private : Boolean := False;
109 -- Set True if package System has the line "type Address is private;"
111 All_Errors_Mode : Boolean := False;
113 -- Flag set to force display of multiple errors on a single line and
114 -- also repeated error messages for references to undefined identifiers
115 -- and certain other repeated error messages.
117 All_Sources : Boolean := False;
119 -- Set to True to require all source files to be present. This flag is
120 -- directly modified by gnatmake to affect the shared binder routines.
122 Alternate_Main_Name : String_Ptr := null;
124 -- Set to non null when Bind_Alternate_Main_Name is True. This value
125 -- is modified as needed by Gnatbind.Scan_Bind_Arg.
127 Assertions_Enabled : Boolean := False;
129 -- Enable assertions made using pragma Assert.
131 ASIS_Mode : Boolean := False;
133 -- Enable semantic checks and tree transformations that are important
134 -- for ASIS but that are usually skipped if Operating_Mode is set to
135 -- Check_Semantics. This flag does not have the corresponding option to set
136 -- it ON. It is set ON when Tree_Output is set ON, it can also be set ON
137 -- from the code of GNSA-based tool (a client may need to set ON the
138 -- Back_Annotate_Rep_Info flag in this case. At the moment this does not
139 -- make very much sense, because GNSA can not do back annotation).
141 Back_Annotate_Rep_Info : Boolean := False;
143 -- If set True, enables back annotation of representation information
144 -- by gigi, even in -gnatc mode. This is set True by the use of -gnatR
145 -- (list representation information) or -gnatt (generate tree). It is
146 -- also set true if certain Unchecked_Conversion instantiations require
147 -- checking based on annotated values.
149 Bind_Alternate_Main_Name : Boolean := False;
151 -- True if main should be called Alternate_Main_Name.all.
152 -- This variable may be set to True by Gnatbind.Scan_Bind_Arg.
154 Bind_Main_Program : Boolean := True;
156 -- Set to False if not binding main Ada program.
158 Bind_For_Library : Boolean := False;
160 -- Set to True if the binder needs to generate a file designed for
161 -- building a library. May be set to True by Gnatbind.Scan_Bind_Arg.
163 Bind_Only : Boolean := False;
165 -- Set to True to skip compile and link steps
166 -- (except when Compile_Only and/or Link_Only are True).
168 Blank_Deleted_Lines : Boolean := False;
170 -- Output empty lines for each line of preprocessed input that is deleted
171 -- in the output, including preprocessor lines starting with a '#'.
173 Brief_Output : Boolean := False;
175 -- Force brief error messages to standard error, even if verbose mode is
176 -- set (so that main error messages go to standard output).
178 Build_Bind_And_Link_Full_Project : Boolean := False;
180 -- Set to True to build, bind and link all the sources of a project file
183 Check_Object_Consistency : Boolean := False;
184 -- GNATBIND, GNATMAKE
185 -- Set to True to check whether every object file is consistent with
186 -- its corresponding ada library information (ALI) file. An object
187 -- file is inconsistent with the corresponding ALI file if the object
188 -- file does not exist or if it has an older time stamp than the ALI file.
189 -- Default above is for GNATBIND. GNATMAKE overrides this default to
190 -- True (see Make.Initialize) since we normally do need to check source
191 -- consistencies in gnatmake.
193 Check_Only : Boolean := False;
195 -- Set to True to do checks only, no output of binder file.
197 Check_Readonly_Files : Boolean := False;
199 -- Set to True to check readonly files during the make process.
201 Check_Source_Files : Boolean := True;
202 -- GNATBIND, GNATMAKE
203 -- Set to True to enable consistency checking for any source files that
204 -- are present (i.e. date must match the date in the library info file).
205 -- Set to False for object file consistency check only. This flag is
206 -- directly modified by gnatmake, to affect the shared binder routines.
208 Check_Switches : Boolean := False;
210 -- Set to True to check compiler options during the make process.
212 Check_Unreferenced : Boolean := False;
214 -- Set to True to enable checking for unreferenced entities other
215 -- than formal parameters (for which see Check_Unreferenced_Formals)
217 Check_Unreferenced_Formals : Boolean := False;
219 -- Set True to check for unreferenced formals. This is turned
220 -- on by -gnatwa/wf/wu and turned off by -gnatwA/wF/wU.
222 Check_Withs : Boolean := False;
224 -- Set to True to enable checking for unused withs, and also the case
225 -- of withing a package and using none of the entities in the package.
227 Comment_Deleted_Lines : Boolean := False;
229 -- True if source lines removed by the preprocessor should be commented
230 -- in the output file.
232 Compile_Only : Boolean := False;
233 -- GNATMAKE, GNATCLEAN
234 -- GNATMAKE: set to True to skip bind and link steps (except when
235 -- Bind_Only is True).
236 -- GNATCLEAN: set to True to only the files produced by the compiler are to
237 -- be deleted, but not the library files or executable files.
239 Config_File : Boolean := True;
241 -- Set to False to inhibit reading and processing of gnat.adc file
243 Config_File_Names : String_List_Access := null;
245 -- Names of configuration pragmas files (given by switches -gnatec)
247 Configurable_Run_Time_Mode : Boolean := False;
249 -- Set True if the compiler is operating in configurable run-time mode.
250 -- This happens if the flag Targparm.Configurable_Run_TimeMode_On_Target
251 -- is set True, or if pragma No_Run_Time is used. See the spec of Rtsfind
252 -- for details on the handling of the latter pragma.
254 Constant_Condition_Warnings : Boolean := False;
256 -- Set to True to activate warnings on constant conditions
258 Create_Mapping_File : Boolean := False;
260 -- Set to True (-C switch) to indicate that gnatmake will invoke
261 -- the compiler with a mapping file (-gnatem compiler switch).
263 subtype Debug_Level_Value is Nat range 0 .. 3;
264 Debugger_Level : Debug_Level_Value := 0;
266 -- The value given to the -g parameter. The default value for -g with
267 -- no value is 2. This is usually ignored by GNATBIND, except in the
268 -- VMS version where it is passed as an argument to __gnat_initialize
269 -- to trigger the activation of the remote debugging interface.
270 -- Is this still true ???
272 Debug_Generated_Code : Boolean := False;
274 -- Set True (-gnatD switch) to debug generated expanded code instead
275 -- of the original source code. Causes debugging information to be
276 -- written with respect to the generated code file that is written.
278 Default_Exit_Status : Int := 0;
280 -- Set the default exit status value. Set by the -Xnnn switch for the
283 Default_Sec_Stack_Size : Int := -1;
285 -- Set to default secondary stack size in units of kilobytes. Set by
286 -- the -Dnnn switch for the binder. A value of -1 indicates that no
287 -- default was set by the binder, and that the default should be the
288 -- initial value of System.Secondary_Stack.Default_Secondary_Stack_Size.
290 Detect_Blocking : Boolean := False;
292 -- Set True to force the run time to raise Program_Error if calls to
293 -- potentially blocking operations are detected from protected actions.
295 Display_Compilation_Progress : Boolean := False;
297 -- Set True (-d switch) to display information on progress while compiling
298 -- files. Internal flag to be used in conjunction with an IDE (e.g GPS).
300 type Distribution_Stub_Mode_Type is
303 -- Normal mode, no generation/compilation of distribution stubs
305 Generate_Receiver_Stub_Body,
306 -- The unit being compiled is the RCI body, and the compiler will
307 -- generate the body for the receiver stubs and compile it.
309 Generate_Caller_Stub_Body);
310 -- The unit being compiled is the RCI spec, and the compiler will
311 -- generate the body for the caller stubs and compile it.
313 Distribution_Stub_Mode : Distribution_Stub_Mode_Type := No_Stubs;
315 -- This enumeration variable indicates the five states of distribution
316 -- annex stub generation/compilation.
318 Do_Not_Execute : Boolean := False;
320 -- Set to True if no actual compilations should be undertaken.
322 Dynamic_Elaboration_Checks : Boolean := False;
324 -- Set True for dynamic elaboration checking mode, as set by the -gnatE
325 -- switch or by the use of pragma Elaboration_Checks (Dynamic).
327 Elab_Dependency_Output : Boolean := False;
329 -- Set to True to output complete list of elaboration constraints
331 Elab_Order_Output : Boolean := False;
333 -- Set to True to output chosen elaboration order
335 Elab_Warnings : Boolean := False;
337 -- Set to True to generate full elaboration warnings (-gnatwl)
339 Enable_Overflow_Checks : Boolean := False;
341 -- Set to True if -gnato (enable overflow checks) switch is set,
344 Exception_Locations_Suppressed : Boolean := False;
346 -- This flag is set True if a Suppress_Exception_Locations configuration
347 -- pragma is currently active.
349 type Exception_Mechanism_Type is
350 -- Determines the handling of exceptions. See Exp_Ch11 for details
352 (Front_End_Setjmp_Longjmp_Exceptions,
353 -- Exceptions use setjmp/longjmp generated explicitly by the
354 -- front end (this includes gigi or other equivalent parts of
355 -- the code generator). AT END handlers are converted into
356 -- exception handlers by the front end in this mode.
358 Front_End_ZCX_Exceptions,
359 -- Exceptions use the zero cost table mechanism with explicit
360 -- tables and exception regions generated by the front end.
361 -- AT END handlers are converted into exception handlers by
362 -- the front end in this mode.
364 Back_End_ZCX_Exceptions);
365 -- Exceptions are handled by the back end. The front end simply
366 -- generates the handlers as they appear in the source, and AT
367 -- END handlers are left untouched (they are not converted into
368 -- exception handlers when operating in this mode. Note that the
369 -- name includes ZCX, since the expectation is that the back end
370 -- mechanism will in fact be a ZCX approach, but nothing in the
371 -- compiler depends on this, so for example if GNAT is run with
372 -- a version of GCC configured for setjmp/longjmp exception handling,
373 -- then everything will work fine.
374 pragma Convention (C, Exception_Mechanism_Type);
376 Exception_Mechanism : Exception_Mechanism_Type :=
377 Front_End_Setjmp_Longjmp_Exceptions;
379 -- Set to the appropriate value depending on the default as given in
380 -- system.ads (ZCX_By_Default, GCC_ZCX_Support, Front_End_ZCX_Support)
381 -- and the use of -gnatL -gnatZ (and -gnatdX). The C convention is
382 -- there to make this variable accessible to gigi.
384 Exception_Tracebacks : Boolean := False;
386 -- Set to True to store tracebacks in exception occurrences (-E)
388 Extensions_Allowed : Boolean := False;
390 -- Set to True by switch -gnatX if GNAT specific language extensions
391 -- are allowed. For example, "limited with" is a GNAT extension.
393 type External_Casing_Type is (
394 As_Is, -- External names cased as they appear in the Ada source
395 Uppercase, -- External names forced to all uppercase letters
396 Lowercase); -- External names forced to all lowercase letters
398 External_Name_Imp_Casing : External_Casing_Type := Lowercase;
400 -- The setting of this flag determines the casing of external names
401 -- when the name is implicitly derived from an entity name (i.e. either
402 -- no explicit External_Name or Link_Name argument is used, or, in the
403 -- case of extended DEC pragmas, the external name is given using an
404 -- identifier. The As_Is setting is not permitted here (since this would
405 -- create Ada source programs that were case sensitive).
407 External_Name_Exp_Casing : External_Casing_Type := As_Is;
409 -- The setting of this flag determines the casing of an external name
410 -- specified explicitly with a string literal. As_Is means the string
411 -- literal is used as given with no modification to the casing. If
412 -- Lowercase or Uppercase is set, then the string is forced to all
413 -- lowercase or all uppercase letters as appropriate. Note that this
414 -- setting has no effect if the external name is given using an identifier
415 -- in the case of extended DEC import/export pragmas (in this case the
416 -- casing is controlled by External_Name_Imp_Casing), and also has no
417 -- effect if an explicit Link_Name is supplied (a link name is always
418 -- used exactly as given).
420 External_Unit_Compilation_Allowed : Boolean := False;
422 -- When True (set by gnatmake switch -x), allow compilation of sources
423 -- that are not part of any project file.
425 Float_Format : Character := ' ';
427 -- A non-blank value indicates that a Float_Format pragma has been
428 -- processed, in which case this variable is set to 'I' for IEEE or
429 -- to 'V' for VAX. The setting of 'V' is only possible on OpenVMS
432 Float_Format_Long : Character := ' ';
434 -- A non-blank value indicates that a Long_Float pragma has been
435 -- processed (this pragma is recognized only in OpenVMS versions
436 -- of GNAT), in which case this variable is set to D or G for
437 -- D_Float or G_Float.
439 Force_ALI_Tree_File : Boolean := False;
441 -- Force generation of ALI file even if errors are encountered.
442 -- Also forces generation of tree file if -gnatt is also set.
444 Force_Checking_Of_Elaboration_Flags : Boolean := False;
446 -- True if binding with forced checking of the elaboration flags
449 Force_Compilations : Boolean := False;
451 -- Set to force recompilations even when the objects are up-to-date.
453 Force_RM_Elaboration_Order : Boolean := False;
455 -- True if binding with forced RM elaboration order (-f switch set)
456 -- Note: this is considered an obsolescent option, to be removed in
457 -- some future release. It is no longer documented. The proper way
458 -- to get this effect is to use -gnatE and suppress elab checks.
460 Full_Path_Name_For_Brief_Errors : Boolean := False;
461 -- GNAT, GNATMAKE, GNATCLEAN
462 -- When True, in Brief_Output mode, each error message line
463 -- will start with the full path name of the source.
464 -- When False, only the file name without directory information
467 Full_List : Boolean := False;
469 -- Set True to generate full source listing with embedded errors
471 function get_gcc_version return Int;
472 pragma Import (C, get_gcc_version, "get_gcc_version");
474 GCC_Version : constant Nat := get_gcc_version;
476 -- Indicates which version of gcc is in use (2 = 2.8.1, 3 = 3.x).
478 Global_Discard_Names : Boolean := False;
480 -- Set true if a pragma Discard_Names applies to the current unit
482 GNAT_Mode : Boolean := False;
484 -- True if compiling in GNAT system mode (-gnatg switch)
486 HLO_Active : Boolean := False;
488 -- True if High Level Optimizer is activated (-gnatH switch)
490 Implementation_Unit_Warnings : Boolean := True;
492 -- Set True to active warnings for use of implementation internal units.
493 -- Can be controlled by use of -gnatwi/-gnatwI.
495 Identifier_Character_Set : Character;
497 -- This variable indicates the character set to be used for identifiers.
498 -- The possible settings are:
499 -- '1' Latin-5 (ISO-8859-1)
500 -- '2' Latin-5 (ISO-8859-2)
501 -- '3' Latin-5 (ISO-8859-3)
502 -- '4' Latin-5 (ISO-8859-4)
503 -- '5' Latin-5 (ISO-8859-5, Cyrillic)
504 -- '9' Latin-5 (ISO-8859-9)
505 -- 'p' PC (US, IBM page 437)
506 -- '8' PC (European, IBM page 850)
507 -- 'f' Full upper set (all distinct)
508 -- 'n' No upper characters (Ada 83 rules)
509 -- 'w' Latin-1 plus wide characters allowed in identifiers
511 -- The setting affects the set of letters allowed in identifiers and the
512 -- upper/lower case equivalences. It does not affect the interpretation of
513 -- character and string literals, which are always stored using the actual
514 -- coding in the source program. This variable is initialized to the
515 -- default value appropriate to the system (in Osint.Initialize), and then
516 -- reset if a command line switch is used to change the setting.
518 Ineffective_Inline_Warnings : Boolean := False;
520 -- Set True to activate warnings if front-end inlining (-gnatN) is not
521 -- able to actually inline a particular call (or all calls). Can be
522 -- controlled by use of -gnatwp/-gnatwP.
524 Init_Or_Norm_Scalars : Boolean := False;
526 -- Set True if a pragma Initialize_Scalars applies to the current unit.
527 -- Also set True if a pragma Normalize_Scalars applies.
529 Initialize_Scalars : Boolean := False;
531 -- Set True if a pragma Initialize_Scalars applies to the current unit.
532 -- Note that Init_Or_Norm_Scalars is also set to True if this is True.
534 Initialize_Scalars_Mode1 : Character := 'I';
535 Initialize_Scalars_Mode2 : Character := 'N';
537 -- Set to two characters from -S switch (IN/LO/HI/EV/xx). The default
538 -- is IN (invalid values), used if no -S switch is used.
540 Inline_Active : Boolean := False;
542 -- Set True to activate pragma Inline processing across modules. Default
543 -- for now is not to inline across module boundaries.
545 Interface_Library_Unit : Boolean := False;
547 -- Set to True to indicate that at least one ALI file is an interface ALI:
548 -- then elaboration flag checks are to be generated in the binder
551 Follow_Links : Boolean := False;
553 -- Set to True (-eL) to process the project files in trusted mode
555 Front_End_Inlining : Boolean := False;
557 -- Set True to activate inlining by front-end expansion.
559 Inline_Processing_Required : Boolean := False;
561 -- Set True if inline processing is required. Inline processing is
562 -- required if an active Inline pragma is processed. The flag is set
563 -- for a pragma Inline or Inline_Always that is actually active.
565 In_Place_Mode : Boolean := False;
567 -- Set True to store ALI and object files in place ie in the object
568 -- directory if these files already exist or in the source directory
571 Keep_Going : Boolean := False;
573 -- When True signals gnatmake to ignore compilation errors and keep
574 -- processing sources until there is no more work.
576 Keep_Temporary_Files : Boolean := False;
578 -- When True the temporary files created by the GNAT driver are not
579 -- deleted. Set by switch -dn or qualifier /KEEP_TEMPORARY_FILES.
581 Link_Only : Boolean := False;
583 -- Set to True to skip compile and bind steps
584 -- (except when Bind_Only is set to True).
586 List_Restrictions : Boolean := False;
588 -- Set to True to list restrictions pragmas that could apply to partition
590 List_Units : Boolean := False;
592 -- List units in the active library for a compilation (-gnatu switch)
594 List_Dependencies : Boolean := False;
596 -- When True gnatmake verifies that the objects are up to date and
597 -- outputs the list of object dependencies (-M switch).
598 -- Output depends if -a switch is used or not.
599 -- This list can be used directly in a Makefile.
601 List_Representation_Info : Int range 0 .. 3 := 0;
603 -- Set non-zero by -gnatR switch to list representation information.
604 -- The settings are as follows:
606 -- 0 = no listing of representation information (default as above)
607 -- 1 = list rep info for user defined record and array types
608 -- 2 = list rep info for all user defined types and objects
609 -- 3 = like 2, but variable fields are decoded symbolically
611 List_Representation_Info_To_File : Boolean := False;
613 -- Set true by -gnatRs switch. Causes information from -gnatR/1/2/3
614 -- to be written to file.rep (where file is the name of the source
615 -- file) instead of stdout. For example, if file x.adb is compiled
616 -- using -gnatR2s then representation info is written to x.adb.ref.
618 List_Representation_Info_Mechanisms : Boolean := False;
620 -- Set true by -gnatRm switch. Causes information on mechanisms to
621 -- be included in the representation output information.
623 List_Preprocessing_Symbols : Boolean := False;
625 -- Set to True if symbols for preprocessing a source are to be listed
626 -- before preprocessing occurs. Set to True by switch -s of gnatprep
627 -- or -s in preprocessing data file for the compiler.
629 type Creat_Repinfo_File_Proc is access procedure (Src : File_Name_Type);
630 type Write_Repinfo_Line_Proc is access procedure (Info : String);
631 type Close_Repinfo_File_Proc is access procedure;
632 -- Types used for procedure addresses below
634 Creat_Repinfo_File_Access : Creat_Repinfo_File_Proc := null;
635 Write_Repinfo_Line_Access : Write_Repinfo_Line_Proc := null;
636 Close_Repinfo_File_Access : Close_Repinfo_File_Proc := null;
638 -- These three locations are left null when operating in non-compiler
639 -- (e.g. ASIS mode), but when operating in compiler mode, they are
640 -- set to point to the three corresponding procedures in Osint. The
641 -- reason for this slightly strange interface is to prevent Repinfo
642 -- from dragging in Osint in ASIS mode, which would include a lot of
643 -- unwanted units in the ASIS build.
645 Locking_Policy : Character := ' ';
647 -- Set to ' ' for the default case (no locking policy specified).
648 -- Reset to first character (uppercase) of locking policy name if a
649 -- valid pragma Locking_Policy is encountered.
651 Locking_Policy_Sloc : Source_Ptr := No_Location;
653 -- Remember location of previous Locking_Policy pragma. This is used
654 -- for inconsistency error messages. A value of System_Location is
655 -- used if the policy is set in package System.
657 Look_In_Primary_Dir : Boolean := True;
658 -- GNAT, GNATBIND, GNATMAKE, GNATCLEAN
659 -- Set to False if a -I- was present on the command line.
660 -- When True we are allowed to look in the primary directory to locate
661 -- other source or library files.
663 Make_Steps : Boolean := False;
665 -- Set to True when either Compile_Only, Bind_Only or Link_Only is
668 Main_Index : Int := 0;
670 -- This is set to non-zero by gnatmake switch -eInnn to indicate that
671 -- the main program is the nnn unit in a multi-unit source file.
673 Mapping_File_Name : String_Ptr := null;
675 -- File name of mapping between unit names, file names and path names.
676 -- (given by switch -gnatem)
678 Maximum_Errors : Int := 9999;
680 -- Maximum default number of errors before compilation is terminated.
681 -- Can be overridden using -gnatm (GNAT) or -m (GNATBIND) switch.
683 Maximum_File_Name_Length : Int;
685 -- Maximum number of characters allowed in a file name, not counting the
686 -- extension, as set by the appropriate switch. If no switch is given,
687 -- then this value is initialized by Osint to the appropriate value.
689 Max_Line_Length : Int := Hostparm.Max_Line_Length;
690 -- This is a copy of Max_Line_Length used by the scanner. It is usually
691 -- set to be a copy of Hostparm.Max_Line_Length, and is used to check
692 -- the maximum line length in the scanner when style checking is inactive.
693 -- The only time it is set to a different value is during the scanning of
694 -- configuration pragma files, where we want to turn off all checking and
695 -- in particular we want to allow long lines. So we reset this value to
696 -- Column_Number'Last during scanning of configuration pragma files.
698 Maximum_Processes : Positive := 1;
700 -- Maximum number of processes that should be spawned to carry out
703 Minimal_Recompilation : Boolean := False;
705 -- Set to True if minimal recompilation mode requested.
707 Multiple_Unit_Index : Int;
709 -- This is set non-zero if the current unit is being compiled in multiple
710 -- unit per file mode, meaning that the current unit is selected from the
711 -- sequence of units in the current source file, using the value stored
712 -- in this variable (e.g. 2 = select second unit in file). A value of
713 -- zero indicates that we are in normal (one unit per file) mode.
715 No_Main_Subprogram : Boolean := False;
716 -- GNATMAKE, GNATBIND
717 -- Set to True if compilation/binding of a program without main
718 -- subprogram requested.
720 No_Run_Time_Mode : Boolean := False;
722 -- This flag is set True if a No_Run_Time pragma is encountered. See
723 -- spec of Rtsfind for a full description of handling of this pragma.
725 No_Stdinc : Boolean := False;
726 -- GNAT, GNATBIND, GNATMAKE, GNATFIND, GNATXREF
727 -- Set to True if no default source search dirs added to search list
729 No_Stdlib : Boolean := False;
730 -- GNATMAKE, GNATBIND, GNATFIND, GNATXREF
731 -- Set to True if no default library search dirs added to search list
733 No_Strict_Aliasing : Boolean := False;
735 -- Set True if pragma No_Strict_Aliasing with no parameters encountered
737 Normalize_Scalars : Boolean := False;
739 -- Set True if a pragma Normalize_Scalars applies to the current unit.
740 -- Note that Init_Or_Norm_Scalars is also set to True if this is True.
742 Object_Directory_Present : Boolean := False;
744 -- Set to True when an object directory is specified with option -D
746 type Operating_Mode_Type is (Check_Syntax, Check_Semantics, Generate_Code);
747 Operating_Mode : Operating_Mode_Type := Generate_Code;
749 -- Indicates the operating mode of the compiler. The default is generate
750 -- code, which runs the parser, semantics and backend. Switches can be
751 -- used to set syntax checking only mode, or syntax and semantics checking
752 -- only mode. Operating_Mode can also be modified as a result of detecting
753 -- errors during the compilation process. In particular if any serious
754 -- error is detected then this flag is reset from Generate_Code to
755 -- Check_Semantics after generating an error message.
757 Original_Operating_Mode : Operating_Mode_Type := Generate_Code;
759 -- Indicates the original operating mode of the compiler as set by
760 -- compiler options. This is identical to Operating_Mode except that
761 -- this is not affected by errors.
763 Optimization_Level : Int;
764 pragma Import (C, Optimization_Level, "optimize");
765 -- This constant reflects the optimization level (0,1,2 for -O0,-O1,-O2)
767 Output_File_Name_Present : Boolean := False;
768 -- GNATBIND, GNAT, GNATMAKE
769 -- Set to True when the output C file name is given with option -o
770 -- for GNATBIND, when the object file name is given with option
771 -- -gnatO for GNAT or when the executable is given with option -o
774 Output_Linker_Option_List : Boolean := False;
776 -- True if output of list of linker options is requested (-K switch set)
778 Output_Object_List : Boolean := False;
780 -- True if output of list of objects is requested (-O switch set)
782 Pessimistic_Elab_Order : Boolean := False;
784 -- True if pessimistic elaboration order is to be chosen (-p switch set)
786 Polling_Required : Boolean := False;
788 -- Set to True if polling for asynchronous abort is enabled by using
789 -- the -gnatP option for GNAT.
791 Preprocessing_Data_File : String_Ptr := null;
793 -- Set by switch -gnatep=. The file name of the prepocessing data file.
795 Print_Generated_Code : Boolean := False;
797 -- Set to True to enable output of generated code in source form. This
798 -- flag is set by the -gnatG switch.
800 Print_Standard : Boolean := False;
802 -- Set to true to enable printing of package standard in source form.
803 -- This flag is set by the -gnatS switch
805 Propagate_Exceptions : Boolean := False;
807 -- Indicates if subprogram descriptor exception tables should be
808 -- built for imported subprograms. Set True if a Propagate_Exceptions
809 -- pragma applies to the extended main unit.
811 type Usage is (Unknown, Not_In_Use, In_Use);
812 Project_File_In_Use : Usage := Unknown;
814 -- Indicates if a project file is used or not.
815 -- Set to In_Use by the first SFNP pragma.
817 Queuing_Policy : Character := ' ';
819 -- Set to ' ' for the default case (no queuing policy specified).
820 -- Reset to first character (uppercase) of locking policy name if a valid
821 -- Queuing_Policy pragma is encountered.
823 Queuing_Policy_Sloc : Source_Ptr := No_Location;
825 -- Remember location of previous Queuing_Policy pragma. This is used
826 -- for inconsistency error messages. A value of System_Location is
827 -- used if the policy is set in package System.
829 Quiet_Output : Boolean := False;
830 -- GNATMAKE, GNATCLEAN, GPR2MAKE
831 -- Set to True if the tool should not have any output if there are no
832 -- errors or warnings.
834 RTS_Lib_Path_Name : String_Ptr := null;
835 RTS_Src_Path_Name : String_Ptr := null;
837 -- Set to the "adalib" and "adainclude" directories of the run time
838 -- specified by --RTS=.
840 RTS_Switch : Boolean := False;
841 -- GNAT, GNATMAKE, GNATBIND, GNATLS, GNATFIND, GNATXREF
842 -- Set to True when the --RTS switch is set
844 Run_Path_Option : Boolean := True;
845 -- GNATMAKE, GNATLINK
846 -- Set to False when no run_path_option should be issued to the linker
848 Sec_Stack_Used : Boolean := False;
850 -- Set True if generated code uses the System.Secondary_Stack package.
851 -- For the binder, set if any unit uses the secondary stack package.
853 Setup_Projects : Boolean := False;
855 -- Set to True for GNAT SETUP: the Project Manager creates non existing
856 -- object, library and exec directories.
858 Shared_Libgnat : Boolean;
860 -- Set to True if a shared libgnat is requested by using the -shared
861 -- option for GNATBIND and to False when using the -static option. The
862 -- value of this flag is set by Gnatbind.Scan_Bind_Arg.
864 Stack_Checking_Enabled : Boolean;
866 -- Set to indicate if -fstack-check switch is set for the compilation.
867 -- True means that the switch is set, so that stack checking is enabled.
868 -- False means that the switch is not set (no stack checking). This
869 -- value is obtained from the external imported value flag_stack_check
870 -- in the gcc backend (see Frontend) and may be referenced throughout
871 -- the compilation phases.
873 Style_Check : Boolean := False;
875 -- Set True to perform style checks. Activates checks carried out
876 -- in package Style (see body of this package for details of checks)
877 -- This flag is set True by either the -gnatg or -gnaty switches.
879 System_Extend_Pragma_Arg : Node_Id := Empty;
881 -- Set non-empty if and only if a correct Extend_System pragma was present
882 -- in which case it points to the argument of the pragma, and the name can
883 -- be located as Chars (Expression (System_Extend_Pragma_Arg)).
885 System_Extend_Unit : Node_Id := Empty;
887 -- This is set to Empty if GNAT_Mode is set, since pragma Extend_System
888 -- is never appropriate in GNAT_Mode (and causes troubles, including
889 -- bogus circularities, if we try to compile the run-time library with
890 -- a System extension). If GNAT_Mode is not set, then System_Extend_Unit
891 -- is a copy of the value set in System_Extend_Pragma_Ary.
893 Subunits_Missing : Boolean := False;
895 -- This flag is set true if missing subunits are detected with code
896 -- generation active. This causes code generation to be skipped.
898 Suppress_Checks : Boolean := False;
900 -- Set to True if -gnatp (suppress all checks) switch present.
902 Suppress_Options : Suppress_Array;
904 -- Flags set True to suppress corresponding check, i.e. add an implicit
905 -- pragma Suppress at the outer level of each unit compiled. Note that
906 -- these suppress actions can be overridden by the use of the Unsuppress
907 -- pragma. This variable is initialized by Osint.Initialize.
909 Suppress_Back_Annotation : Boolean := False;
911 -- This flag is set True if back annotation of representation information
912 -- is to be suppressed. This is set if neither -gnatt or -gnatR0-3 is set.
913 -- This avoids unnecessary time being spent on back annotation.
915 Table_Factor : Int := 1;
917 -- Factor by which all initial table sizes set in Alloc are multiplied.
918 -- Used in Table to calculate initial table sizes (the initial table
919 -- size is the value in Alloc, used as the Table_Initial parameter
920 -- value, multiplied by the factor given here. The default value is
921 -- used if no -gnatT switch appears.
923 Task_Dispatching_Policy : Character := ' ';
925 -- Set to ' ' for the default case (no task dispatching policy specified).
926 -- Reset to first character (uppercase) of task dispatching policy name
927 -- if a valid Task_Dispatching_Policy pragma is encountered.
929 Task_Dispatching_Policy_Sloc : Source_Ptr := No_Location;
931 -- Remember location of previous Task_Dispatching_Policy pragma. This is
932 -- used for inconsistency error messages. A value of System_Location is
933 -- used if the policy is set in package System.
935 Tasking_Used : Boolean := False;
936 -- Set True if any tasking construct is encountered. Used to activate the
937 -- output of the Q, L and T lines in ALI files.
939 Time_Slice_Set : Boolean := False;
941 -- Set True if a pragma Time_Slice is processed in the main unit, or
942 -- if the -gnatTnn switch is present to set a time slice value.
944 Time_Slice_Value : Nat;
946 -- Time slice value. Valid only if Time_Slice_Set is True, i.e. if a
947 -- Time_Slice pragma has been processed. Set to the time slice value
948 -- in microseconds. Negative values are stored as zero, and the value
949 -- is not larger than 1_000_000_000 (1000 seconds). Values larger than
950 -- this are reset to this maximum. This can also be set with the -gnatTnn
953 Tolerate_Consistency_Errors : Boolean := False;
955 -- Tolerate time stamp and other consistency errors. If this flag is
956 -- set to True (-t), then inconsistencies result in warnings rather than
959 Tree_Output : Boolean := False;
961 -- Set to True (-gnatt) to generate output tree file
963 Try_Semantics : Boolean := False;
965 -- Flag set to force attempt at semantic analysis, even if parser errors
966 -- occur. This will probably cause blowups at this stage in the game. On
967 -- the other hand, most such blowups will be caught cleanly and simply
968 -- say compilation abandoned. This flag is set to True by -gnatq or -gnatQ.
970 Undefined_Symbols_Are_False : Boolean := False;
972 -- Set to True by switch -u of gnatprep or -u in the preprocessing data
973 -- file for the compiler. Indicates that while preprocessing sources,
974 -- symbols that are not defined have the value FALSE.
976 Unique_Error_Tag : Boolean := Tag_Errors;
978 -- Indicates if error messages are to be prefixed by the string error:
979 -- Initialized from Tag_Errors, can be forced on with the -gnatU switch.
981 Universal_Addressing_On_AAMP : Boolean := False;
983 -- Indicates if library-level objects should be accessed and updated
984 -- using universal addressing instructions on the AAMP architecture.
985 -- This flag is set to True when pragma Universal_Data is given as
986 -- a configuration pragma.
988 Unreserve_All_Interrupts : Boolean := False;
990 -- Normally set False, set True if a valid Unreserve_All_Interrupts
991 -- pragma appears anywhere in the main unit for GNAT, or if any ALI
992 -- file has the corresponding attribute set in GNATBIND.
994 Upper_Half_Encoding : Boolean := False;
996 -- Normally set False, indicating that upper half ASCII characters are
997 -- used in the normal way to represent themselves. If the wide character
998 -- encoding method uses the upper bit for this encoding, then this flag
999 -- is set True, and upper half characters in the source indicate the
1000 -- start of a wide character sequence.
1002 Usage_Requested : Boolean := False;
1003 -- GNAT, GNATBIND, GNATMAKE
1004 -- Set to True if -h (-gnath for the compiler) switch encountered
1005 -- requesting usage information
1007 Use_VADS_Size : Boolean := False;
1009 -- Set to True if a valid pragma Use_VADS_Size is processed
1011 Validity_Checks_On : Boolean := True;
1013 -- This flag determines if validity checking is on or off. The initial
1014 -- state is on, and the required default validity checks are active. The
1015 -- actual set of checks that is performed if Validity_Checks_On is set
1016 -- is defined by the switches in package Sem_Val. The Validity_Checks_On
1017 -- flag is controlled by pragma Validity_Checks (On | Off), and also
1018 -- some generated compiler code (typically code that has to do with
1019 -- validity check generation) is compiled with this flag set to False.
1020 -- This flag is set to False by the -gnatp switch.
1022 Verbose_Mode : Boolean := False;
1023 -- GNAT, GNATBIND, GNATMAKE, GNATLINK, GNATLS, GNATCHOP, GNATNAME,
1025 -- Set to True to get verbose mode (full error message text and location
1026 -- information sent to standard output, also header, copyright and summary)
1028 Warn_On_Bad_Fixed_Value : Boolean := False;
1030 -- Set to True to generate warnings for static fixed-point expression
1031 -- values that are not an exact multiple of the small value of the type.
1033 Warn_On_Constant : Boolean := False;
1035 -- Set to True to generate warnings for variables that could be declared
1036 -- as constants. Modified by use of -gnatwk/K.
1038 Warn_On_Dereference : Boolean := False;
1040 -- Set to True to generate warnings for implicit dereferences for array
1041 -- indexing and record component access. Modified by use of -gnatwd/D.
1043 Warn_On_Export_Import : Boolean := True;
1045 -- Set to True to generate warnings for suspicious use of export or
1046 -- import pragmas. Modified by use of -gnatwx/X.
1048 Warn_On_Hiding : Boolean := False;
1050 -- Set to True to generate warnings if a declared entity hides another
1051 -- entity. The default is that this warning is suppressed.
1053 Warn_On_Modified_Unread : Boolean := False;
1055 -- Set to True to generate warnings if a variable is assigned but is
1056 -- never read. The default is that this warning is suppressed.
1058 Warn_On_No_Value_Assigned : Boolean := True;
1060 -- Set to True to generate warnings if no value is ever assigned to a
1061 -- variable that is at least partially uninitialized. Set to false to
1062 -- suppress such warnings. The default is that such warnings are enabled.
1064 Warn_On_Obsolescent_Feature : Boolean := False;
1066 -- Set to True to generate warnings on use of any feature in Annex J
1067 -- or if a subprogram is called for which a pragma Obsolescent applies.
1069 Warn_On_Redundant_Constructs : Boolean := False;
1071 -- Set to True to generate warnings for redundant constructs (e.g. useless
1072 -- assignments/conversions). The default is that this warning is disabled.
1074 Warn_On_Unchecked_Conversion : Boolean := True;
1076 -- Set to True to generate warnings for unchecked conversions that may have
1077 -- non-portable semantics (e.g. because sizes of types differ). The default
1078 -- is that this warning is enabled.
1080 Warn_On_Unrecognized_Pragma : Boolean := True;
1082 -- Set to True to generate warnings for unrecognized pragmas. The default
1083 -- is that this warning is enabled.
1085 type Warning_Mode_Type is (Suppress, Normal, Treat_As_Error);
1086 Warning_Mode : Warning_Mode_Type := Normal;
1088 -- Controls treatment of warning messages. If set to Suppress, warning
1089 -- messages are not generated at all. In Normal mode, they are generated
1090 -- but do not count as errors. In Treat_As_Error mode, warning messages
1091 -- are generated and are treated as errors.
1093 Wide_Character_Encoding_Method : WC_Encoding_Method := WCEM_Brackets;
1095 -- Method used for encoding wide characters in the source program. See
1096 -- description of type in unit System.WCh_Con for a list of the methods
1097 -- that are currently supported. Note that brackets notation is always
1098 -- recognized in source programs regardless of the setting of this
1099 -- variable. The default setting causes only the brackets notation
1100 -- to be recognized. If this is the main unit, this setting also
1101 -- controls the output of the W=? parameter in the ALI file, which
1102 -- is used to provide the default for Wide_Text_IO files.
1104 Xref_Active : Boolean := True;
1106 -- Set if cross-referencing is enabled (i.e. xref info in ALI files)
1108 Zero_Cost_Exceptions_Val : Boolean;
1109 Zero_Cost_Exceptions_Set : Boolean := False;
1111 -- These values are to record the setting of the zero cost exception
1112 -- handling mode set by argument switches (-gnatZ/-gnatL). If the
1113 -- value is set by one of these switches, then Zero_Cost_Exceptions_Set
1114 -- is set to True, and Zero_Cost_Exceptions_Val indicates the setting.
1116 ----------------------------
1117 -- Configuration Settings --
1118 ----------------------------
1120 -- These are settings that are used to establish the mode at the start
1121 -- of each unit. The values defined below can be affected either by
1122 -- command line switches, or by the use of appropriate configuration
1123 -- pragmas in the gnat.adc file.
1125 Ada_Version_Config : Ada_Version_Type;
1127 -- This is the value of the configuration switch for the Ada 83 mode, as
1128 -- set by the command line switches -gnat83/95/05, and possibly modified
1129 -- by the use of configuration pragmas Ada_83/Ada95/Ada05. This switch
1130 -- is used to set the initial value for Ada_Version mode at the start
1131 -- of analysis of a unit. Note however, that the setting of this flag
1132 -- is ignored for internal and predefined units (which are always compiled
1133 -- in the most up to date version of Ada).
1135 Dynamic_Elaboration_Checks_Config : Boolean := False;
1137 -- Set True for dynamic elaboration checking mode, as set by the -gnatE
1138 -- switch or by the use of pragma Elaboration_Checking (Dynamic).
1140 Exception_Locations_Suppressed_Config : Boolean := False;
1142 -- Set True by use of the configuration pragma Suppress_Exception_Messages
1144 Extensions_Allowed_Config : Boolean;
1146 -- This is the flag that indicates whether extensions are allowed.
1147 -- It can be set True either by use of the -gnatX switch, or by use
1148 -- of the configuration pragma Extensions_Allowed (On). It is always
1149 -- set to True for internal GNAT units, since extensions are always
1150 -- permitted in such units.
1152 External_Name_Exp_Casing_Config : External_Casing_Type;
1154 -- This is the value of the configuration switch that controls casing
1155 -- of external symbols for which an explicit external name is given. It
1156 -- can be set to Uppercase by the command line switch -gnatF, and further
1157 -- modified by the use of the configuration pragma External_Name_Casing
1158 -- in the gnat.adc file. This flag is used to set the initial value
1159 -- for External_Name_Exp_Casing at the start of analyzing each unit.
1160 -- Note however that the setting of this flag is ignored for internal
1161 -- and predefined units (which are always compiled with As_Is mode).
1163 External_Name_Imp_Casing_Config : External_Casing_Type;
1165 -- This is the value of the configuration switch that controls casing
1166 -- of external symbols where the external name is implicitly given. It
1167 -- can be set to Uppercase by the command line switch -gnatF, and further
1168 -- modified by the use of the configuration pragma External_Name_Casing
1169 -- in the gnat.adc file. This flag is used to set the initial value
1170 -- for External_Name_Imp_Casing at the start of analyzing each unit.
1171 -- Note however that the setting of this flag is ignored for internal
1172 -- and predefined units (which are always compiled with Lowercase mode).
1174 Polling_Required_Config : Boolean;
1176 -- This is the value of the configuration switch that controls polling
1177 -- mode. It can be set True by the command line switch -gnatP, and then
1178 -- further modified by the use of pragma Polling in the gnat.adc file.
1179 -- This flag is used to set the initial value for Polling_Required
1180 -- at the start of analyzing each unit.
1182 Use_VADS_Size_Config : Boolean;
1184 -- This is the value of the configuration switch that controls the use
1185 -- of VADS_Size instead of Size whereever the attribute Size is used.
1186 -- It can be set True by the use of the pragma Use_VADS_Size in the
1187 -- gnat.adc file. This flag is used to set the initial value for
1188 -- Use_VADS_Size at the start of analyzing each unit. Note however that
1189 -- the setting of this flag is ignored for internal and predefined
1190 -- units (which are always compiled with the standard Size semantics).
1192 type Config_Switches_Type is private;
1193 -- Type used to save values of the switches set from Config values
1195 procedure Save_Opt_Config_Switches (Save : out Config_Switches_Type);
1196 -- This procedure saves the current values of the switches which are
1197 -- initialized from the above Config values, and then resets these
1198 -- switches according to the Config value settings.
1200 procedure Set_Opt_Config_Switches (Internal_Unit : Boolean);
1201 -- This procedure sets the switches to the appropriate initial values.
1202 -- The parameter Internal_Unit is True for an internal or predefined
1203 -- unit, and affects the way the switches are set (see above).
1205 procedure Restore_Opt_Config_Switches (Save : Config_Switches_Type);
1206 -- This procedure restores a set of switch values previously saved
1207 -- by a call to Save_Opt_Switches.
1209 procedure Register_Opt_Config_Switches;
1210 -- This procedure is called after processing the gnat.adc file to record
1211 -- the values of the Config switches, as possibly modified by the use
1212 -- of command line switches and configuration pragmas.
1214 ------------------------
1215 -- Other Global Flags --
1216 ------------------------
1218 Expander_Active : Boolean := False;
1219 -- A flag that indicates if expansion is active (True) or deactivated
1220 -- (False). When expansion is deactivated all calls to expander routines
1221 -- have no effect. Note that the initial setting of False is merely to
1222 -- prevent saving of an undefined value for an initial call to the
1223 -- Expander_Mode_Save_And_Set procedure. For more information on the
1224 -- use of this flag, see package Expander. Indeed this flag might more
1225 -- logically be in the spec of Expander, but it is referenced by Errout,
1226 -- and it really seems wrong for Errout to depend on Expander.
1228 -----------------------
1229 -- Tree I/O Routines --
1230 -----------------------
1232 procedure Tree_Read;
1233 -- Reads switch settings from current tree file using Tree_Read
1235 procedure Tree_Write;
1236 -- Writes out switch settings to current tree file using Tree_Write
1238 --------------------------
1239 -- ASIS Version Control --
1240 --------------------------
1242 -- These two variables (Tree_Version_String and Tree_ASIS_Version_Number)
1243 -- are supposed to be used in the GNAT/ASIS version check performed in
1244 -- the ASIS code (this package is also a part of the ASIS implementation).
1245 -- They are set by Tree_Read procedure, so they represent the version
1246 -- number (and the version string) of the compiler which has created the
1247 -- tree, and they are supposed to be compared with the corresponding values
1248 -- from the Gnatvsn package which is a part of ASIS implementation.
1250 Tree_Version_String : String (Gnat_Version_String'Range);
1251 -- Used to store the compiler version string read from a tree file to
1252 -- check if it is the same as stored in the version string in Gnatvsn.
1253 -- Therefore its length is taken directly from the version string in
1254 -- Gnatvsn. If the length of the version string stored in the tree is
1255 -- different, then versions are for sure different, and a string containing
1256 -- '?' characters is assigned to this variable as a result of tree read.
1258 Tree_ASIS_Version_Number : Int;
1259 -- Used to store the ASIS version number read from a tree file to check if
1260 -- it is the same as stored in the ASIS version number in Gnatvsn.
1264 type Config_Switches_Type is record
1265 Ada_Version : Ada_Version_Type;
1266 Dynamic_Elaboration_Checks : Boolean;
1267 Exception_Locations_Suppressed : Boolean;
1268 Extensions_Allowed : Boolean;
1269 External_Name_Exp_Casing : External_Casing_Type;
1270 External_Name_Imp_Casing : External_Casing_Type;
1271 Polling_Required : Boolean;
1272 Use_VADS_Size : Boolean;