| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- O P T -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2004, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 2, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- |
| -- MA 02111-1307, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package contains global flags set by the initialization |
| -- routine from the command line and referenced throughout the compiler, |
| -- the binder, gnatmake or other GNAT tools. The comments indicate which |
| -- options are used by which programs (GNAT, GNATBIND, GNATMAKE, etc). |
| |
| with Gnatvsn; use Gnatvsn; |
| with Hostparm; use Hostparm; |
| with Types; use Types; |
| |
| with System.WCh_Con; use System.WCh_Con; |
| with GNAT.Strings; use GNAT.Strings; |
| |
| package Opt is |
| |
| ---------------------------------------------- |
| -- Settings of Modes for Current Processing -- |
| ---------------------------------------------- |
| |
| -- The following mode values represent the current state of processing. |
| -- The values set here are the default values. Unless otherwise noted, |
| -- the value may be reset in Switch with an appropropiate switch. In |
| -- some cases, the values can also be modified by pragmas, and in the |
| -- case of some binder variables, Gnatbind.Scan_Bind_Arg may modify |
| -- the default values. |
| |
| Ada_Bind_File : Boolean := True; |
| -- GNATBIND, GNATLINK |
| -- Set True if binder file to be generated in Ada rather than C |
| |
| Ada_95 : Boolean := True; |
| -- GNAT |
| -- Set True if operating in Ada 95 mode |
| -- Set False if operating in Ada 83 mode |
| |
| Ada_83 : Boolean := False; |
| -- GNAT |
| -- Set True if operating in Ada 83 mode |
| -- Set False if operating in Ada 95 mode |
| |
| Ada_Final_Suffix : constant String := "final"; |
| Ada_Final_Name : String_Ptr := new String'("ada" & Ada_Final_Suffix); |
| -- GNATBIND |
| -- The name of the procedure that performs the finalization at the end of |
| -- execution. This variable may be modified by Gnatbind.Scan_Bind_Arg. |
| |
| Ada_Init_Suffix : constant String := "init"; |
| Ada_Init_Name : String_Ptr := new String'("ada" & Ada_Init_Suffix); |
| -- GNATBIND |
| -- The name of the procedure that performs initialization at the start |
| -- of execution. This variable may be modified by Gnatbind.Scan_Bind_Arg. |
| |
| Ada_Main_Name_Suffix : constant String := "main"; |
| -- GNATBIND |
| -- The suffix for Ada_Main_Name. Defined as a constant here so that it |
| -- can be referenced in a uniform manner to create either the default |
| -- value of Ada_Main_Name (declared below), or the non-default name |
| -- set by Gnatbind.Scan_Bind_Arg. |
| |
| Ada_Main_Name : String_Ptr := new String'("ada_" & Ada_Main_Name_Suffix); |
| -- GNATBIND |
| -- The name of the Ada package generated by the binder (when in Ada mode). |
| -- This variable may be modified by Gnatbind.Scan_Bind_Arg. |
| |
| Address_Clause_Overlay_Warnings : Boolean := True; |
| -- GNAT |
| -- Set False to disable address clause warnings |
| |
| All_Errors_Mode : Boolean := False; |
| -- GNAT |
| -- Flag set to force display of multiple errors on a single line and |
| -- also repeated error messages for references to undefined identifiers |
| -- and certain other repeated error messages. |
| |
| All_Sources : Boolean := False; |
| -- GNATBIND |
| -- Set to True to require all source files to be present. This flag is |
| -- directly modified by gnatmake to affect the shared binder routines. |
| |
| Alternate_Main_Name : String_Ptr := null; |
| -- GNATBIND |
| -- Set to non null when Bind_Alternate_Main_Name is True. This value |
| -- is modified as needed by Gnatbind.Scan_Bind_Arg. |
| |
| Assertions_Enabled : Boolean := False; |
| -- GNAT |
| -- Enable assertions made using pragma Assert. |
| |
| ASIS_Mode : Boolean := False; |
| -- GNAT |
| -- Enable semantic checks and tree transformations that are important |
| -- for ASIS but that are usually skipped if Operating_Mode is set to |
| -- Check_Semantics. This flag does not have the corresponding option to set |
| -- it ON. It is set ON when Tree_Output is set ON, it can also be set ON |
| -- from the code of GNSA-based tool (a client may need to set ON the |
| -- Back_Annotate_Rep_Info flag in this case. At the moment this does not |
| -- make very much sense, because GNSA can not do back annotation). |
| |
| Back_Annotate_Rep_Info : Boolean := False; |
| -- GNAT |
| -- If set True, enables back annotation of representation information |
| -- by gigi, even in -gnatc mode. This is set True by the use of -gnatR |
| -- (list representation information) or -gnatt (generate tree). It is |
| -- also set true if certain Unchecked_Conversion instantiations require |
| -- checking based on annotated values. |
| |
| Bind_Alternate_Main_Name : Boolean := False; |
| -- GNATBIND |
| -- True if main should be called Alternate_Main_Name.all. |
| -- This variable may be set to True by Gnatbind.Scan_Bind_Arg. |
| |
| Bind_Main_Program : Boolean := True; |
| -- GNATBIND |
| -- Set to False if not binding main Ada program. |
| |
| Bind_For_Library : Boolean := False; |
| -- GNATBIND |
| -- Set to True if the binder needs to generate a file designed for |
| -- building a library. May be set to True by Gnatbind.Scan_Bind_Arg. |
| |
| Bind_Only : Boolean := False; |
| -- GNATMAKE |
| -- Set to True to skip compile and link steps |
| -- (except when Compile_Only and/or Link_Only are True). |
| |
| Blank_Deleted_Lines : Boolean := False; |
| -- GNAT, GNATPREP |
| -- Output empty lines for each line of preprocessed input that is deleted |
| -- in the output, including preprocessor lines starting with a '#'. |
| |
| Brief_Output : Boolean := False; |
| -- GNAT, GNATBIND |
| -- Force brief error messages to standard error, even if verbose mode is |
| -- set (so that main error messages go to standard output). |
| |
| Build_Bind_And_Link_Full_Project : Boolean := False; |
| -- GNATMAKE |
| -- Set to True to build, bind and link all the sources of a project file |
| -- (switch -B) |
| |
| Check_Object_Consistency : Boolean := False; |
| -- GNATBIND, GNATMAKE |
| -- Set to True to check whether every object file is consistent with |
| -- its corresponding ada library information (ALI) file. An object |
| -- file is inconsistent with the corresponding ALI file if the object |
| -- file does not exist or if it has an older time stamp than the ALI file. |
| -- Default above is for GNATBIND. GNATMAKE overrides this default to |
| -- True (see Make.Initialize) since we normally do need to check source |
| -- consistencies in gnatmake. |
| |
| Check_Only : Boolean := False; |
| -- GNATBIND |
| -- Set to True to do checks only, no output of binder file. |
| |
| Check_Readonly_Files : Boolean := False; |
| -- GNATMAKE |
| -- Set to True to check readonly files during the make process. |
| |
| Check_Source_Files : Boolean := True; |
| -- GNATBIND, GNATMAKE |
| -- Set to True to enable consistency checking for any source files that |
| -- are present (i.e. date must match the date in the library info file). |
| -- Set to False for object file consistency check only. This flag is |
| -- directly modified by gnatmake, to affect the shared binder routines. |
| |
| Check_Switches : Boolean := False; |
| -- GNATMAKE |
| -- Set to True to check compiler options during the make process. |
| |
| Check_Unreferenced : Boolean := False; |
| -- GNAT |
| -- Set to True to enable checking for unreferenced entities other |
| -- than formal parameters (for which see Check_Unreferenced_Formals) |
| |
| Check_Unreferenced_Formals : Boolean := False; |
| -- GNAT |
| -- Set True to check for unreferenced formals. This is turned |
| -- on by -gnatwa/wf/wu and turned off by -gnatwA/wF/wU. |
| |
| Check_Withs : Boolean := False; |
| -- GNAT |
| -- Set to True to enable checking for unused withs, and also the case |
| -- of withing a package and using none of the entities in the package. |
| |
| Comment_Deleted_Lines : Boolean := False; |
| -- GNATPREP |
| -- True if source lines removed by the preprocessor should be commented |
| -- in the output file. |
| |
| Compile_Only : Boolean := False; |
| -- GNATMAKE, GNATCLEAN |
| -- GNATMAKE: set to True to skip bind and link steps (except when |
| -- Bind_Only is True). |
| -- GNATCLEAN: set to True to only the files produced by the compiler are to |
| -- be deleted, but not the library files or executable files. |
| |
| Config_File : Boolean := True; |
| -- GNAT |
| -- Set to False to inhibit reading and processing of gnat.adc file |
| |
| Config_File_Names : String_List_Access := null; |
| -- GNAT |
| -- Names of configuration pragmas files (given by switches -gnatec) |
| |
| Configurable_Run_Time_Mode : Boolean := False; |
| -- GNAT, GNATBIND |
| -- Set True if the compiler is operating in configurable run-time mode. |
| -- This happens if the flag Targparm.Configurable_Run_TimeMode_On_Target |
| -- is set True, or if pragma No_Run_Time is used. See the spec of Rtsfind |
| -- for details on the handling of the latter pragma. |
| |
| Constant_Condition_Warnings : Boolean := False; |
| -- GNAT |
| -- Set to True to activate warnings on constant conditions |
| |
| Create_Mapping_File : Boolean := False; |
| -- GNATMAKE |
| -- Set to True (-C switch) to indicate that gnatmake |
| -- invokes the compiler with a mapping file (-gnatem compiler switch). |
| |
| subtype Debug_Level_Value is Nat range 0 .. 3; |
| Debugger_Level : Debug_Level_Value := 0; |
| -- GNATBIND |
| -- The value given to the -g parameter. |
| -- The default value for -g with no value is 2 |
| -- This is usually ignored by GNATBIND, except in the VMS version |
| -- where it is passed as an argument to __gnat_initialize to trigger |
| -- the activation of the remote debugging interface (is this true???). |
| |
| Debug_Generated_Code : Boolean := False; |
| -- GNAT |
| -- Set True (-gnatD switch) to debug generated expanded code instead |
| -- of the original source code. Causes debugging information to be |
| -- written with respect to the generated code file that is written. |
| |
| Default_Sec_Stack_Size : Int := -1; |
| -- GNATBIND |
| -- Set to default secondary stack size in units of kilobytes. Set by |
| -- the -Dnnn switch for the binder. A value of -1 indicates that no |
| -- default was set by the binder, and that the default should be the |
| -- initial value of System.Secondary_Stack.Default_Secondary_Stack_Size. |
| |
| Display_Compilation_Progress : Boolean := False; |
| -- GNATMAKE |
| -- Set True (-d switch) to display information on progress while compiling |
| -- files. Internal flag to be used in conjunction with an IDE such as |
| -- Glide. |
| |
| type Distribution_Stub_Mode_Type is |
| -- GNAT |
| (No_Stubs, |
| -- Normal mode, no generation/compilation of distribution stubs |
| |
| Generate_Receiver_Stub_Body, |
| -- The unit being compiled is the RCI body, and the compiler will |
| -- generate the body for the receiver stubs and compile it. |
| |
| Generate_Caller_Stub_Body); |
| -- The unit being compiled is the RCI spec, and the compiler will |
| -- generate the body for the caller stubs and compile it. |
| |
| Distribution_Stub_Mode : Distribution_Stub_Mode_Type := No_Stubs; |
| -- GNAT |
| -- This enumeration variable indicates the five states of distribution |
| -- annex stub generation/compilation. |
| |
| Do_Not_Execute : Boolean := False; |
| -- GNATMAKE |
| -- Set to True if no actual compilations should be undertaken. |
| |
| Dynamic_Elaboration_Checks : Boolean := False; |
| -- GNAT |
| -- Set True for dynamic elaboration checking mode, as set by the -gnatE |
| -- switch or by the use of pragma Elaboration_Checks (Dynamic). |
| |
| Elab_Dependency_Output : Boolean := False; |
| -- GNATBIND |
| -- Set to True to output complete list of elaboration constraints |
| |
| Elab_Order_Output : Boolean := False; |
| -- GNATBIND |
| -- Set to True to output chosen elaboration order |
| |
| Elab_Warnings : Boolean := False; |
| -- GNAT |
| -- Set to True to generate full elaboration warnings (-gnatwl) |
| |
| Enable_Overflow_Checks : Boolean := False; |
| -- GNAT |
| -- Set to True if -gnato (enable overflow checks) switch is set, |
| -- but not -gnatp. |
| |
| Exception_Locations_Suppressed : Boolean := False; |
| -- GNAT |
| -- This flag is set True if a Suppress_Exception_Locations configuration |
| -- pragma is currently active. |
| |
| type Exception_Mechanism_Type is |
| -- Determines the handling of exceptions. See Exp_Ch11 for details |
| -- |
| (Front_End_Setjmp_Longjmp_Exceptions, |
| -- Exceptions use setjmp/longjmp generated explicitly by the |
| -- front end (this includes gigi or other equivalent parts of |
| -- the code generator). AT END handlers are converted into |
| -- exception handlers by the front end in this mode. |
| |
| Front_End_ZCX_Exceptions, |
| -- Exceptions use the zero cost table mechanism with explicit |
| -- tables and exception regions generated by the front end. |
| -- AT END handlers are converted into exception handlers by |
| -- the front end in this mode. |
| |
| Back_End_ZCX_Exceptions); |
| -- Exceptions are handled by the back end. The front end simply |
| -- generates the handlers as they appear in the source, and AT |
| -- END handlers are left untouched (they are not converted into |
| -- exception handlers when operating in this mode. Note that the |
| -- name includes ZCX, since the expectation is that the back end |
| -- mechanism will in fact be a ZCX approach, but nothing in the |
| -- compiler depends on this, so for example if GNAT is run with |
| -- a version of GCC configured for setjmp/longjmp exception handling, |
| -- then everything will work fine. |
| pragma Convention (C, Exception_Mechanism_Type); |
| |
| Exception_Mechanism : Exception_Mechanism_Type := |
| Front_End_Setjmp_Longjmp_Exceptions; |
| -- GNAT |
| -- Set to the appropriate value depending on the default as given in |
| -- system.ads (ZCX_By_Default, GCC_ZCX_Support, Front_End_ZCX_Support) |
| -- and the use of -gnatL -gnatZ (and -gnatdX). The C convention is |
| -- there to make this variable accessible to gigi. |
| |
| Exception_Tracebacks : Boolean := False; |
| -- GNATBIND |
| -- Set to True to store tracebacks in exception occurrences (-E) |
| |
| Extensions_Allowed : Boolean := False; |
| -- GNAT |
| -- Set to True by switch -gnatX if GNAT specific language extensions |
| -- are allowed. For example, "with type" is a GNAT extension. |
| |
| type External_Casing_Type is ( |
| As_Is, -- External names cased as they appear in the Ada source |
| Uppercase, -- External names forced to all uppercase letters |
| Lowercase); -- External names forced to all lowercase letters |
| |
| External_Name_Imp_Casing : External_Casing_Type := Lowercase; |
| -- GNAT |
| -- The setting of this flag determines the casing of external names |
| -- when the name is implicitly derived from an entity name (i.e. either |
| -- no explicit External_Name or Link_Name argument is used, or, in the |
| -- case of extended DEC pragmas, the external name is given using an |
| -- identifier. The As_Is setting is not permitted here (since this would |
| -- create Ada source programs that were case sensitive). |
| |
| External_Name_Exp_Casing : External_Casing_Type := As_Is; |
| -- GNAT |
| -- The setting of this flag determines the casing of an external name |
| -- specified explicitly with a string literal. As_Is means the string |
| -- literal is used as given with no modification to the casing. If |
| -- Lowercase or Uppercase is set, then the string is forced to all |
| -- lowercase or all uppercase letters as appropriate. Note that this |
| -- setting has no effect if the external name is given using an identifier |
| -- in the case of extended DEC import/export pragmas (in this case the |
| -- casing is controlled by External_Name_Imp_Casing), and also has no |
| -- effect if an explicit Link_Name is supplied (a link name is always |
| -- used exactly as given). |
| |
| Float_Format : Character := ' '; |
| -- GNAT |
| -- A non-blank value indicates that a Float_Format pragma has been |
| -- processed, in which case this variable is set to 'I' for IEEE or |
| -- to 'V' for VAX. The setting of 'V' is only possible on OpenVMS |
| -- versions of GNAT. |
| |
| Float_Format_Long : Character := ' '; |
| -- GNAT |
| -- A non-blank value indicates that a Long_Float pragma has been |
| -- processed (this pragma is recognized only in OpenVMS versions |
| -- of GNAT), in which case this variable is set to D or G for |
| -- D_Float or G_Float. |
| |
| Force_ALI_Tree_File : Boolean := False; |
| -- GNAT |
| -- Force generation of ALI file even if errors are encountered. |
| -- Also forces generation of tree file if -gnatt is also set. |
| |
| Force_Checking_Of_Elaboration_Flags : Boolean := False; |
| -- GNATBIND |
| -- True if binding with forced checking of the elaboration flags |
| -- (-F switch set). |
| |
| Force_Compilations : Boolean := False; |
| -- GNATMAKE |
| -- Set to force recompilations even when the objects are up-to-date. |
| |
| Force_RM_Elaboration_Order : Boolean := False; |
| -- GNATBIND |
| -- True if binding with forced RM elaboration order (-f switch set) |
| -- Note: this is considered an obsolescent option, to be removed in |
| -- some future release. It is no longer documented. The proper way |
| -- to get this effect is to use -gnatE and suppress elab checks. |
| |
| Full_Path_Name_For_Brief_Errors : Boolean := False; |
| -- GNAT, GNATMAKE, GNATCLEAN |
| -- When True, in Brief_Output mode, each error message line |
| -- will start with the full path name of the source. |
| -- When False, only the file name without directory information |
| -- is used. |
| |
| Full_List : Boolean := False; |
| -- GNAT |
| -- Set True to generate full source listing with embedded errors |
| |
| function get_gcc_version return Int; |
| pragma Import (C, get_gcc_version, "get_gcc_version"); |
| |
| GCC_Version : constant Nat := get_gcc_version; |
| -- GNATMAKE |
| -- Indicates which version of gcc is in use (2 = 2.8.1, 3 = 3.x). |
| -- Used in particular to decide if gcc switch -shared-libgcc should be |
| -- used (it cannot be used for 2.8.1). |
| |
| Global_Discard_Names : Boolean := False; |
| -- GNAT, GNATBIND |
| -- Set true if a pragma Discard_Names applies to the current unit |
| |
| GNAT_Mode : Boolean := False; |
| -- GNAT |
| -- True if compiling in GNAT system mode (-gnatg switch) |
| |
| HLO_Active : Boolean := False; |
| -- GNAT |
| -- True if High Level Optimizer is activated (-gnatH switch) |
| |
| Implementation_Unit_Warnings : Boolean := True; |
| -- GNAT |
| -- Set True to active warnings for use of implementation internal units. |
| -- Can be controlled by use of -gnatwi/-gnatwI. |
| |
| Identifier_Character_Set : Character; |
| -- GNAT |
| -- This variable indicates the character set to be used for identifiers. |
| -- The possible settings are: |
| -- '1' Latin-5 (ISO-8859-1) |
| -- '2' Latin-5 (ISO-8859-2) |
| -- '3' Latin-5 (ISO-8859-3) |
| -- '4' Latin-5 (ISO-8859-4) |
| -- '5' Latin-5 (ISO-8859-5, Cyrillic) |
| -- '9' Latin-5 (ISO-8859-9) |
| -- 'p' PC (US, IBM page 437) |
| -- '8' PC (European, IBM page 850) |
| -- 'f' Full upper set (all distinct) |
| -- 'n' No upper characters (Ada/83 rules) |
| -- 'w' Latin-1 plus wide characters allowed in identifiers |
| -- |
| -- The setting affects the set of letters allowed in identifiers and the |
| -- upper/lower case equivalences. It does not affect the interpretation of |
| -- character and string literals, which are always stored using the actual |
| -- coding in the source program. This variable is initialized to the |
| -- default value appropriate to the system (in Osint.Initialize), and then |
| -- reset if a command line switch is used to change the setting. |
| |
| Ineffective_Inline_Warnings : Boolean := False; |
| -- GNAT |
| -- Set True to activate warnings if front-end inlining (-gnatN) is not |
| -- able to actually inline a particular call (or all calls). Can be |
| -- controlled by use of -gnatwp/-gnatwP. |
| |
| Init_Or_Norm_Scalars : Boolean := False; |
| -- GNAT, GANTBIND |
| -- Set True if a pragma Initialize_Scalars applies to the current unit. |
| -- Also set True if a pragma Normalize_Scalars applies. |
| |
| Initialize_Scalars : Boolean := False; |
| -- GNAT |
| -- Set True if a pragma Initialize_Scalars applies to the current unit. |
| -- Note that Init_Or_Norm_Scalars is also set to True if this is True. |
| |
| Initialize_Scalars_Mode1 : Character := 'I'; |
| Initialize_Scalars_Mode2 : Character := 'N'; |
| -- GNATBIND |
| -- Set to two characters from -S switch (IN/LO/HI/EV/xx). The default |
| -- is IN (invalid values), used if no -S switch is used. |
| |
| Inline_Active : Boolean := False; |
| -- GNAT |
| -- Set True to activate pragma Inline processing across modules. Default |
| -- for now is not to inline across module boundaries. |
| |
| Interface_Library_Unit : Boolean := False; |
| -- GNATBIND |
| -- Set to True to indicate that at least one ALI file is an interface ALI: |
| -- then elaboration flag checks are to be generated in the binder |
| -- generated file. |
| |
| Front_End_Inlining : Boolean := False; |
| -- GNAT |
| -- Set True to activate inlining by front-end expansion. |
| |
| Inline_Processing_Required : Boolean := False; |
| -- GNAT |
| -- Set True if inline processing is required. Inline processing is |
| -- required if an active Inline pragma is processed. The flag is set |
| -- for a pragma Inline or Inline_Always that is actually active. |
| |
| In_Place_Mode : Boolean := False; |
| -- GNATMAKE |
| -- Set True to store ALI and object files in place ie in the object |
| -- directory if these files already exist or in the source directory |
| -- if not. |
| |
| Keep_Going : Boolean := False; |
| -- GNATMAKE |
| -- When True signals gnatmake to ignore compilation errors and keep |
| -- processing sources until there is no more work. |
| |
| Link_Only : Boolean := False; |
| -- GNATMAKE |
| -- Set to True to skip compile and bind steps |
| -- (except when Bind_Only is set to True). |
| |
| List_Restrictions : Boolean := False; |
| -- GNATBIND |
| -- Set to True to list restrictions pragmas that could apply to partition |
| |
| List_Units : Boolean := False; |
| -- GNAT |
| -- List units in the active library for a compilation (-gnatu switch) |
| |
| List_Dependencies : Boolean := False; |
| -- GNATMAKE |
| -- When True gnatmake verifies that the objects are up to date and |
| -- outputs the list of object dependencies (-M switch). |
| -- Output depends if -a switch is used or not. |
| -- This list can be used directly in a Makefile. |
| |
| List_Representation_Info : Int range 0 .. 3 := 0; |
| -- GNAT |
| -- Set non-zero by -gnatR switch to list representation information. |
| -- The settings are as follows: |
| -- |
| -- 0 = no listing of representation information (default as above) |
| -- 1 = list rep info for user defined record and array types |
| -- 2 = list rep info for all user defined types and objects |
| -- 3 = like 2, but variable fields are decoded symbolically |
| |
| List_Representation_Info_To_File : Boolean := False; |
| -- GNAT |
| -- Set true by -gnatRs switch. Causes information from -gnatR/1/2/3 |
| -- to be written to file.rep (where file is the name of the source |
| -- file) instead of stdout. For example, if file x.adb is compiled |
| -- using -gnatR2s then representation info is written to x.adb.ref. |
| |
| List_Representation_Info_Mechanisms : Boolean := False; |
| -- GNAT |
| -- Set true by -gnatRm switch. Causes information on mechanisms to |
| -- be included in the representation output information. |
| |
| List_Preprocessing_Symbols : Boolean := False; |
| -- GNAT, GNATPREP |
| -- Set to True if symbols for preprocessing a source are to be listed |
| -- before preprocessing occurs. Set to True by switch -s of gnatprep |
| -- or -s in preprocessing data file for the compiler. |
| |
| type Creat_Repinfo_File_Proc is access procedure (Src : File_Name_Type); |
| type Write_Repinfo_Line_Proc is access procedure (Info : String); |
| type Close_Repinfo_File_Proc is access procedure; |
| -- Types used for procedure addresses below |
| |
| Creat_Repinfo_File_Access : Creat_Repinfo_File_Proc := null; |
| Write_Repinfo_Line_Access : Write_Repinfo_Line_Proc := null; |
| Close_Repinfo_File_Access : Close_Repinfo_File_Proc := null; |
| -- GNAT |
| -- These three locations are left null when operating in non-compiler |
| -- (e.g. ASIS mode), but when operating in compiler mode, they are |
| -- set to point to the three corresponding procedures in Osint. The |
| -- reason for this slightly strange interface is to prevent Repinfo |
| -- from dragging in Osint in ASIS mode, which would include a lot of |
| -- unwanted units in the ASIS build. |
| |
| Locking_Policy : Character := ' '; |
| -- GNAT, GNATBIND |
| -- Set to ' ' for the default case (no locking policy specified). |
| -- Reset to first character (uppercase) of locking policy name if a |
| -- valid pragma Locking_Policy is encountered. |
| |
| Locking_Policy_Sloc : Source_Ptr := No_Location; |
| -- GNAT, GNATBIND |
| -- Remember location of previous Locking_Policy pragma. This is used |
| -- for inconsistency error messages. A value of System_Location is |
| -- used if the policy is set in package System. |
| |
| Look_In_Primary_Dir : Boolean := True; |
| -- GNAT, GNATBIND, GNATMAKE, GNATCLEAN |
| -- Set to False if a -I- was present on the command line. |
| -- When True we are allowed to look in the primary directory to locate |
| -- other source or library files. |
| |
| Make_Steps : Boolean := False; |
| -- GNATMAKE |
| -- Set to True when either Compile_Only, Bind_Only or Link_Only is |
| -- set to True. |
| |
| Mapping_File_Name : String_Ptr := null; |
| -- GNAT |
| -- File name of mapping between unit names, file names and path names. |
| -- (given by switch -gnatem) |
| |
| Maximum_Errors : Int := 9999; |
| -- GNAT, GNATBIND |
| -- Maximum default number of errors before compilation is terminated. |
| -- Can be overridden using -gnatm (GNAT) or -m (GNATBIND) switch. |
| |
| Maximum_File_Name_Length : Int; |
| -- GNAT, GNATBIND |
| -- Maximum number of characters allowed in a file name, not counting the |
| -- extension, as set by the appropriate switch. If no switch is given, |
| -- then this value is initialized by Osint to the appropriate value. |
| |
| Maximum_Processes : Positive := 1; |
| -- GNATMAKE |
| -- Maximum number of processes that should be spawned to carry out |
| -- compilations. |
| |
| Minimal_Recompilation : Boolean := False; |
| -- GNATMAKE |
| -- Set to True if minimal recompilation mode requested. |
| |
| No_Stdlib : Boolean := False; |
| -- GNATMAKE, GNATBIND, GNATFIND, GNATXREF |
| -- Set to True if no default library search dirs added to search list. |
| |
| No_Stdinc : Boolean := False; |
| -- GNAT, GNATBIND, GNATMAKE, GNATFIND, GNATXREF |
| -- Set to True if no default source search dirs added to search list. |
| |
| No_Main_Subprogram : Boolean := False; |
| -- GNATMAKE, GNATBIND |
| -- Set to True if compilation/binding of a program without main |
| -- subprogram requested. |
| |
| No_Run_Time_Mode : Boolean := False; |
| -- GNAT, GNATBIND |
| -- This flag is set True if a No_Run_Time pragma is encountered. See |
| -- spec of Rtsfind for a full description of handling of this pragma. |
| |
| Normalize_Scalars : Boolean := False; |
| -- GNAT, GNATBIND |
| -- Set True if a pragma Normalize_Scalars applies to the current unit. |
| -- Note that Init_Or_Norm_Scalars is also set to True if this is True. |
| |
| Object_Directory_Present : Boolean := False; |
| -- GNATMAKE |
| -- Set to True when an object directory is specified with option -D |
| |
| type Operating_Mode_Type is (Check_Syntax, Check_Semantics, Generate_Code); |
| Operating_Mode : Operating_Mode_Type := Generate_Code; |
| -- GNAT |
| -- Indicates the operating mode of the compiler. The default is generate |
| -- code, which runs the parser, semantics and backend. Switches can be |
| -- used to set syntax checking only mode, or syntax and semantics checking |
| -- only mode. Operating_Mode can also be modified as a result of detecting |
| -- errors during the compilation process. In particular if any serious |
| -- error is detected then this flag is reset from Generate_Code to |
| -- Check_Semantics after generating an error message. |
| |
| Original_Operating_Mode : Operating_Mode_Type := Generate_Code; |
| -- GNAT |
| -- Indicates the original operating mode of the compiler as set by |
| -- compiler options. This is identical to Operating_Mode except that |
| -- this is not affected by errors. |
| |
| Optimization_Level : Int; |
| pragma Import (C, Optimization_Level, "optimize"); |
| -- This constant reflects the optimization level (0,1,2 for -O0,-O1,-O2) |
| |
| Output_File_Name_Present : Boolean := False; |
| -- GNATBIND, GNAT, GNATMAKE |
| -- Set to True when the output C file name is given with option -o |
| -- for GNATBIND, when the object file name is given with option |
| -- -gnatO for GNAT or when the executable is given with option -o |
| -- for GNATMAKE. |
| |
| Output_Linker_Option_List : Boolean := False; |
| -- GNATBIND |
| -- True if output of list of linker options is requested (-K switch set) |
| |
| Output_Object_List : Boolean := False; |
| -- GNATBIND |
| -- True if output of list of objects is requested (-O switch set) |
| |
| Pessimistic_Elab_Order : Boolean := False; |
| -- GNATBIND |
| -- True if pessimistic elaboration order is to be chosen (-p switch set) |
| |
| Polling_Required : Boolean := False; |
| -- GNAT |
| -- Set to True if polling for asynchronous abort is enabled by using |
| -- the -gnatP option for GNAT. |
| |
| Preprocessing_Data_File : String_Ptr := null; |
| -- GNAT |
| -- Set by switch -gnatep=. The file name of the prepocessing data file. |
| |
| Print_Generated_Code : Boolean := False; |
| -- GNAT |
| -- Set to True to enable output of generated code in source form. This |
| -- flag is set by the -gnatG switch. |
| |
| Print_Standard : Boolean := False; |
| -- GNAT |
| -- Set to true to enable printing of package standard in source form. |
| -- This flag is set by the -gnatS switch |
| |
| Propagate_Exceptions : Boolean := False; |
| -- GNAT |
| -- Indicates if subprogram descriptor exception tables should be |
| -- built for imported subprograms. Set True if a Propagate_Exceptions |
| -- pragma applies to the extended main unit. |
| |
| type Usage is (Unknown, Not_In_Use, In_Use); |
| Project_File_In_Use : Usage := Unknown; |
| -- GNAT |
| -- Indicates if a project file is used or not. |
| -- Set to In_Use by the first SFNP pragma. |
| |
| Queuing_Policy : Character := ' '; |
| -- GNAT, GNATBIND |
| -- Set to ' ' for the default case (no queuing policy specified). |
| -- Reset to first character (uppercase) of locking policy name if a valid |
| -- Queuing_Policy pragma is encountered. |
| |
| Queuing_Policy_Sloc : Source_Ptr := No_Location; |
| -- GNAT, GNATBIND |
| -- Remember location of previous Queuing_Policy pragma. This is used |
| -- for inconsistency error messages. A value of System_Location is |
| -- used if the policy is set in package System. |
| |
| Quiet_Output : Boolean := False; |
| -- GNATMAKE, GNATCLEAN, GPR2MAKE |
| -- Set to True if the tool should not have any output if there are no |
| -- errors or warnings. |
| |
| RTS_Lib_Path_Name : String_Ptr := null; |
| RTS_Src_Path_Name : String_Ptr := null; |
| -- GNAT |
| -- Set to the "adalib" and "adainclude" directories of the run time |
| -- specified by --RTS=. |
| |
| RTS_Switch : Boolean := False; |
| -- GNAT, GNATMAKE, GNATBIND, GNATLS, GNATFIND, GNATXREF |
| -- Set to True when the --RTS switch is set |
| |
| Run_Path_Option : Boolean := True; |
| -- GNATMAKE, GNATLINK |
| -- Set to False when no run_path_option should be issued to the linker |
| |
| Sec_Stack_Used : Boolean := False; |
| -- GNAT, GBATBIND |
| -- Set True if generated code uses the System.Secondary_Stack package. |
| -- For the binder, set if any unit uses the secondary stack package. |
| |
| Shared_Libgnat : Boolean; |
| -- GNATBIND |
| -- Set to True if a shared libgnat is requested by using the -shared |
| -- option for GNATBIND and to False when using the -static option. The |
| -- value of this flag is set by Gnatbind.Scan_Bind_Arg. |
| |
| Stack_Checking_Enabled : Boolean; |
| -- GNAT |
| -- Set to indicate if -fstack-check switch is set for the compilation. |
| -- True means that the switch is set, so that stack checking is enabled. |
| -- False means that the switch is not set (no stack checking). This |
| -- value is obtained from the external imported value flag_stack_check |
| -- in the gcc backend (see Frontend) and may be referenced throughout |
| -- the compilation phases. |
| |
| Style_Check : Boolean := False; |
| -- GNAT |
| -- Set True to perform style checks. Activates checks carried out |
| -- in package Style (see body of this package for details of checks) |
| -- This flag is set True by either the -gnatg or -gnaty switches. |
| |
| System_Extend_Pragma_Arg : Node_Id := Empty; |
| -- GNAT |
| -- Set non-empty if and only if a correct Extend_System pragma was present |
| -- in which case it points to the argument of the pragma, and the name can |
| -- be located as Chars (Expression (System_Extend_Pragma_Arg)). |
| |
| System_Extend_Unit : Node_Id := Empty; |
| -- GNAT |
| -- This is set to Empty if GNAT_Mode is set, since pragma Extend_System |
| -- is never appropriate in GNAT_Mode (and causes troubles, including |
| -- bogus circularities, if we try to compile the run-time library with |
| -- a System extension). If GNAT_Mode is not set, then System_Extend_Unit |
| -- is a copy of the value set in System_Extend_Pragma_Ary. |
| |
| Subunits_Missing : Boolean := False; |
| -- GNAT |
| -- This flag is set true if missing subunits are detected with code |
| -- generation active. This causes code generation to be skipped. |
| |
| Suppress_Checks : Boolean := False; |
| -- GNAT |
| -- Set to True if -gnatp (suppress all checks) switch present. |
| |
| Suppress_Options : Suppress_Array; |
| -- GNAT |
| -- Flags set True to suppress corresponding check, i.e. add an implicit |
| -- pragma Suppress at the outer level of each unit compiled. Note that |
| -- these suppress actions can be overridden by the use of the Unsuppress |
| -- pragma. This variable is initialized by Osint.Initialize. |
| |
| Suppress_Back_Annotation : Boolean := False; |
| -- GNAT |
| -- This flag is set True if back annotation of representation information |
| -- is to be suppressed. This is set if neither -gnatt or -gnatR0-3 is set. |
| -- This avoids unnecessary time being spent on back annotation. |
| |
| Table_Factor : Int := 1; |
| -- GNAT |
| -- Factor by which all initial table sizes set in Alloc are multiplied. |
| -- Used in Table to calculate initial table sizes (the initial table |
| -- size is the value in Alloc, used as the Table_Initial parameter |
| -- value, multiplied by the factor given here. The default value is |
| -- used if no -gnatT switch appears. |
| |
| Task_Dispatching_Policy : Character := ' '; |
| -- GNAT, GNATBIND |
| -- Set to ' ' for the default case (no task dispatching policy specified). |
| -- Reset to first character (uppercase) of task dispatching policy name |
| -- if a valid Task_Dispatching_Policy pragma is encountered. |
| |
| Task_Dispatching_Policy_Sloc : Source_Ptr := No_Location; |
| -- GNAT, GNATBIND |
| -- Remember location of previous Task_Dispatching_Policy pragma. This is |
| -- used for inconsistency error messages. A value of System_Location is |
| -- used if the policy is set in package System. |
| |
| Tasking_Used : Boolean := False; |
| -- Set True if any tasking construct is encountered. Used to activate the |
| -- output of the Q, L and T lines in ALI files. |
| |
| Time_Slice_Set : Boolean := False; |
| -- GNATBIND |
| -- Set True if a pragma Time_Slice is processed in the main unit, or |
| -- if the -gnatTnn switch is present to set a time slice value. |
| |
| Time_Slice_Value : Nat; |
| -- GNATBIND |
| -- Time slice value. Valid only if Time_Slice_Set is True, i.e. if a |
| -- Time_Slice pragma has been processed. Set to the time slice value |
| -- in microseconds. Negative values are stored as zero, and the value |
| -- is not larger than 1_000_000_000 (1000 seconds). Values larger than |
| -- this are reset to this maximum. This can also be set with the -gnatTnn |
| -- switch. |
| |
| Tolerate_Consistency_Errors : Boolean := False; |
| -- GNATBIND |
| -- Tolerate time stamp and other consistency errors. If this flag is |
| -- set to True (-t), then inconsistencies result in warnings rather than |
| -- errors. |
| |
| Tree_Output : Boolean := False; |
| -- GNAT |
| -- Set to True (-gnatt) to generate output tree file |
| |
| Try_Semantics : Boolean := False; |
| -- GNAT |
| -- Flag set to force attempt at semantic analysis, even if parser errors |
| -- occur. This will probably cause blowups at this stage in the game. On |
| -- the other hand, most such blowups will be caught cleanly and simply |
| -- say compilation abandoned. This flag is set to True by -gnatq or -gnatQ. |
| |
| Undefined_Symbols_Are_False : Boolean := False; |
| -- GNAT, GNATPREP |
| -- Set to True by switch -u of gnatprep or -u in the preprocessing data |
| -- file for the compiler. Indicates that while preprocessing sources, |
| -- symbols that are not defined have the value FALSE. |
| |
| Unique_Error_Tag : Boolean := Tag_Errors; |
| -- GNAT |
| -- Indicates if error messages are to be prefixed by the string error: |
| -- Initialized from Tag_Errors, can be forced on with the -gnatU switch. |
| |
| Universal_Addressing_On_AAMP : Boolean := False; |
| -- GNAAMP |
| -- Indicates if library-level objects should be accessed and updated |
| -- using universal addressing instructions on the AAMP architecture. |
| -- This flag is set to True when pragma Universal_Data is given as |
| -- a configuration pragma. |
| |
| Unreserve_All_Interrupts : Boolean := False; |
| -- GNAT, GNATBIND |
| -- Normally set False, set True if a valid Unreserve_All_Interrupts |
| -- pragma appears anywhere in the main unit for GNAT, or if any ALI |
| -- file has the corresponding attribute set in GNATBIND. |
| |
| Upper_Half_Encoding : Boolean := False; |
| -- GNAT |
| -- Normally set False, indicating that upper half ASCII characters are |
| -- used in the normal way to represent themselves. If the wide character |
| -- encoding method uses the upper bit for this encoding, then this flag |
| -- is set True, and upper half characters in the source indicate the |
| -- start of a wide character sequence. |
| |
| Usage_Requested : Boolean := False; |
| -- GNAT, GNATBIND, GNATMAKE |
| -- Set to True if -h (-gnath for the compiler) switch encountered |
| -- requesting usage information |
| |
| Use_VADS_Size : Boolean := False; |
| -- GNAT |
| -- Set to True if a valid pragma Use_VADS_Size is processed |
| |
| Validity_Checks_On : Boolean := True; |
| -- GNAT |
| -- This flag determines if validity checking is on or off. The initial |
| -- state is on, and the required default validity checks are active. The |
| -- actual set of checks that is performed if Validity_Checks_On is set |
| -- is defined by the switches in package Sem_Val. The Validity_Checks_On |
| -- flag is controlled by pragma Validity_Checks (On | Off), and also |
| -- some generated compiler code (typically code that has to do with |
| -- validity check generation) is compiled with this flag set to False. |
| -- This flag is set to False by the -gnatp switch. |
| |
| Verbose_Mode : Boolean := False; |
| -- GNAT, GNATBIND, GNATMAKE, GNATLINK, GNATLS, GNATCHOP, GNATNAME, |
| -- GNATCLEAN |
| -- Set to True to get verbose mode (full error message text and location |
| -- information sent to standard output, also header, copyright and summary) |
| |
| Warn_On_Constant : Boolean := False; |
| -- GNAT |
| -- Set to True to generate warnings for variables that could be declared |
| -- as constants. Modified by use of -gnatwk/K. |
| |
| Warn_On_Dereference : Boolean := False; |
| -- GNAT |
| -- Set to True to generate warnings for implicit dereferences for array |
| -- indexing and record component access. Modified by use of -gnatwd/D. |
| |
| Warn_On_Export_Import : Boolean := True; |
| -- GNAT |
| -- Set to True to generate warnings for suspicious use of export or |
| -- import pragmas. Modified by use of -gnatwx/X. |
| |
| Warn_On_Hiding : Boolean := False; |
| -- GNAT |
| -- Set to True to generate warnings if a declared entity hides another |
| -- entity. The default is that this warning is suppressed. |
| |
| Warn_On_Modified_Unread : Boolean := False; |
| -- GNAT |
| -- Set to True to generate warnings if a variable is assigned but is |
| -- never read. The default is that this warning is suppressed. |
| |
| Warn_On_No_Value_Assigned : Boolean := True; |
| -- GNAT |
| -- Set to True to generate warnings if no value is ever assigned to a |
| -- variable that is at least partially uninitialized. Set to false to |
| -- suppress such warnings. The default is that such warnings are enabled. |
| |
| Warn_On_Obsolescent_Feature : Boolean := False; |
| -- GNAT |
| -- Set to True to generate warnings on use of any feature in Annex J |
| -- or if a subprogram is called for which a pragma Obsolescent applies. |
| |
| Warn_On_Redundant_Constructs : Boolean := False; |
| -- GNAT |
| -- Set to True to generate warnings for redundant constructs (e.g. useless |
| -- assignments/conversions). The default is that this warning is disabled. |
| |
| Warn_On_Unchecked_Conversion : Boolean := True; |
| -- GNAT |
| -- Set to True to generate warnings for unchecked conversions that may have |
| -- non-portable semantics (e.g. because sizes of types differ). The default |
| -- is that this warning is enabled. |
| |
| Warn_On_Unrecognized_Pragma : Boolean := True; |
| -- GNAT |
| -- Set to True to generate warnings for unrecognized pragmas. The default |
| -- is that this warning is enabled. |
| |
| type Warning_Mode_Type is (Suppress, Normal, Treat_As_Error); |
| Warning_Mode : Warning_Mode_Type := Normal; |
| -- GNAT, GNATBIND |
| -- Controls treatment of warning messages. If set to Suppress, warning |
| -- messages are not generated at all. In Normal mode, they are generated |
| -- but do not count as errors. In Treat_As_Error mode, warning messages |
| -- are generated and are treated as errors. |
| |
| Wide_Character_Encoding_Method : WC_Encoding_Method := WCEM_Brackets; |
| -- GNAT |
| -- Method used for encoding wide characters in the source program. See |
| -- description of type in unit System.WCh_Con for a list of the methods |
| -- that are currently supported. Note that brackets notation is always |
| -- recognized in source programs regardless of the setting of this |
| -- variable. The default setting causes only the brackets notation |
| -- to be recognized. If this is the main unit, this setting also |
| -- controls the output of the W=? parameter in the ALI file, which |
| -- is used to provide the default for Wide_Text_IO files. |
| |
| Xref_Active : Boolean := True; |
| -- GNAT |
| -- Set if cross-referencing is enabled (i.e. xref info in ALI files) |
| |
| Zero_Cost_Exceptions_Val : Boolean; |
| Zero_Cost_Exceptions_Set : Boolean := False; |
| -- GNAT |
| -- These values are to record the setting of the zero cost exception |
| -- handling mode set by argument switches (-gnatZ/-gnatL). If the |
| -- value is set by one of these switches, then Zero_Cost_Exceptions_Set |
| -- is set to True, and Zero_Cost_Exceptions_Val indicates the setting. |
| |
| ---------------------------- |
| -- Configuration Settings -- |
| ---------------------------- |
| |
| -- These are settings that are used to establish the mode at the start |
| -- of each unit. The values defined below can be affected either by |
| -- command line switches, or by the use of appropriate configuration |
| -- pragmas in the gnat.adc file. |
| |
| Ada_83_Config : Boolean; |
| -- GNAT |
| -- This is the value of the configuration switch for Ada 83 mode, as set |
| -- by the command line switch -gnat83, and possibly modified by the use |
| -- of configuration pragmas Ada_95 and Ada_83 in the gnat.adc file. This |
| -- switch is used to set the initial value for Ada_83 mode at the start |
| -- of analysis of a unit. Note however, that the setting of this flag |
| -- is ignored for internal and predefined units (which are always compiled |
| -- in Ada 95 mode). |
| |
| Dynamic_Elaboration_Checks_Config : Boolean := False; |
| -- GNAT |
| -- Set True for dynamic elaboration checking mode, as set by the -gnatE |
| -- switch or by the use of pragma Elaboration_Checking (Dynamic). |
| |
| Exception_Locations_Suppressed_Config : Boolean := False; |
| -- GNAT |
| -- Set True by use of the configuration pragma Suppress_Exception_Messages |
| |
| Extensions_Allowed_Config : Boolean; |
| -- GNAT |
| -- This is the flag that indicates whether extensions are allowed. |
| -- It can be set True either by use of the -gnatX switch, or by use |
| -- of the configuration pragma Extensions_Allowed (On). It is always |
| -- set to True for internal GNAT units, since extensions are always |
| -- permitted in such units. |
| |
| External_Name_Exp_Casing_Config : External_Casing_Type; |
| -- GNAT |
| -- This is the value of the configuration switch that controls casing |
| -- of external symbols for which an explicit external name is given. It |
| -- can be set to Uppercase by the command line switch -gnatF, and further |
| -- modified by the use of the configuration pragma External_Name_Casing |
| -- in the gnat.adc file. This flag is used to set the initial value |
| -- for External_Name_Exp_Casing at the start of analyzing each unit. |
| -- Note however that the setting of this flag is ignored for internal |
| -- and predefined units (which are always compiled with As_Is mode). |
| |
| External_Name_Imp_Casing_Config : External_Casing_Type; |
| -- GNAT |
| -- This is the value of the configuration switch that controls casing |
| -- of external symbols where the external name is implicitly given. It |
| -- can be set to Uppercase by the command line switch -gnatF, and further |
| -- modified by the use of the configuration pragma External_Name_Casing |
| -- in the gnat.adc file. This flag is used to set the initial value |
| -- for External_Name_Imp_Casing at the start of analyzing each unit. |
| -- Note however that the setting of this flag is ignored for internal |
| -- and predefined units (which are always compiled with Lowercase mode). |
| |
| Polling_Required_Config : Boolean; |
| -- GNAT |
| -- This is the value of the configuration switch that controls polling |
| -- mode. It can be set True by the command line switch -gnatP, and then |
| -- further modified by the use of pragma Polling in the gnat.adc file. |
| -- This flag is used to set the initial value for Polling_Required |
| -- at the start of analyzing each unit. |
| |
| Use_VADS_Size_Config : Boolean; |
| -- GNAT |
| -- This is the value of the configuration switch that controls the use |
| -- of VADS_Size instead of Size whereever the attribute Size is used. |
| -- It can be set True by the use of the pragma Use_VADS_Size in the |
| -- gnat.adc file. This flag is used to set the initial value for |
| -- Use_VADS_Size at the start of analyzing each unit. Note however that |
| -- the setting of this flag is ignored for internal and predefined |
| -- units (which are always compiled with the standard Size semantics). |
| |
| type Config_Switches_Type is private; |
| -- Type used to save values of the switches set from Config values |
| |
| procedure Save_Opt_Config_Switches (Save : out Config_Switches_Type); |
| -- This procedure saves the current values of the switches which are |
| -- initialized from the above Config values, and then resets these |
| -- switches according to the Config value settings. |
| |
| procedure Set_Opt_Config_Switches (Internal_Unit : Boolean); |
| -- This procedure sets the switches to the appropriate initial values. |
| -- The parameter Internal_Unit is True for an internal or predefined |
| -- unit, and affects the way the switches are set (see above). |
| |
| procedure Restore_Opt_Config_Switches (Save : Config_Switches_Type); |
| -- This procedure restores a set of switch values previously saved |
| -- by a call to Save_Opt_Switches. |
| |
| procedure Register_Opt_Config_Switches; |
| -- This procedure is called after processing the gnat.adc file to record |
| -- the values of the Config switches, as possibly modified by the use |
| -- of command line switches and configuration pragmas. |
| |
| ------------------------ |
| -- Other Global Flags -- |
| ------------------------ |
| |
| Expander_Active : Boolean := False; |
| -- A flag that indicates if expansion is active (True) or deactivated |
| -- (False). When expansion is deactivated all calls to expander routines |
| -- have no effect. Note that the initial setting of False is merely to |
| -- prevent saving of an undefined value for an initial call to the |
| -- Expander_Mode_Save_And_Set procedure. For more information on the |
| -- use of this flag, see package Expander. Indeed this flag might more |
| -- logically be in the spec of Expander, but it is referenced by Errout, |
| -- and it really seems wrong for Errout to depend on Expander. |
| |
| ----------------------- |
| -- Tree I/O Routines -- |
| ----------------------- |
| |
| procedure Tree_Read; |
| -- Reads switch settings from current tree file using Tree_Read |
| |
| procedure Tree_Write; |
| -- Writes out switch settings to current tree file using Tree_Write |
| |
| -------------------------- |
| -- ASIS Version Control -- |
| -------------------------- |
| |
| -- These two variables (Tree_Version_String and Tree_ASIS_Version_Number) |
| -- are supposed to be used in the GNAT/ASIS version check performed in |
| -- the ASIS code (this package is also a part of the ASIS implementation). |
| -- They are set by Tree_Read procedure, so they represent the version |
| -- number (and the version string) of the compiler which has created the |
| -- tree, and they are supposed to be compared with the corresponding values |
| -- from the Gnatvsn package which is a part of ASIS implementation. |
| |
| Tree_Version_String : String (Gnat_Version_String'Range); |
| -- Used to store the compiler version string read from a tree file to |
| -- check if it is the same as stored in the version string in Gnatvsn. |
| -- Therefore its length is taken directly from the version string in |
| -- Gnatvsn. If the length of the version string stored in the tree is |
| -- different, then versions are for sure different, and a string containing |
| -- '?' characters is assigned to this variable as a result of tree read. |
| |
| Tree_ASIS_Version_Number : Int; |
| -- Used to store the ASIS version number read from a tree file to check if |
| -- it is the same as stored in the ASIS version number in Gnatvsn. |
| |
| private |
| |
| type Config_Switches_Type is record |
| Ada_83 : Boolean; |
| Dynamic_Elaboration_Checks : Boolean; |
| Exception_Locations_Suppressed : Boolean; |
| Extensions_Allowed : Boolean; |
| External_Name_Exp_Casing : External_Casing_Type; |
| External_Name_Imp_Casing : External_Casing_Type; |
| Polling_Required : Boolean; |
| Use_VADS_Size : Boolean; |
| end record; |
| |
| end Opt; |
