1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1996-2018, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. 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 COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 -- Gnatlink usage: please consult the gnat documentation
30 with Gnatvsn
; use Gnatvsn
;
31 with Indepsw
; use Indepsw
;
32 with Namet
; use Namet
;
34 with Osint
; use Osint
;
35 with Output
; use Output
;
37 with Switch
; use Switch
;
38 with System
; use System
;
43 with Ada
.Command_Line
; use Ada
.Command_Line
;
44 with Ada
.Exceptions
; use Ada
.Exceptions
;
46 with System
.OS_Lib
; use System
.OS_Lib
;
49 with Interfaces
.C_Streams
; use Interfaces
.C_Streams
;
50 with Interfaces
.C
.Strings
; use Interfaces
.C
.Strings
;
53 pragma Ident
(Gnatvsn
.Gnat_Static_Version_String
);
55 Shared_Libgcc_String
: constant String := "-shared-libgcc";
56 Shared_Libgcc
: constant String_Access
:=
57 new String'(Shared_Libgcc_String);
58 -- Used to invoke gcc when the binder is invoked with -shared
60 Static_Libgcc_String : constant String := "-static-libgcc";
61 Static_Libgcc : constant String_Access :=
62 new String'(Static_Libgcc_String
);
63 -- Used to invoke gcc when shared libs are not used
65 package Gcc_Linker_Options
is new Table
.Table
(
66 Table_Component_Type
=> String_Access
,
67 Table_Index_Type
=> Integer,
70 Table_Increment
=> 100,
71 Table_Name
=> "Gnatlink.Gcc_Linker_Options");
72 -- Comments needed ???
74 package Libpath
is new Table
.Table
(
75 Table_Component_Type
=> Character,
76 Table_Index_Type
=> Integer,
78 Table_Initial
=> 4096,
79 Table_Increment
=> 100,
80 Table_Name
=> "Gnatlink.Libpath");
81 -- Comments needed ???
83 package Linker_Options
is new Table
.Table
(
84 Table_Component_Type
=> String_Access
,
85 Table_Index_Type
=> Integer,
88 Table_Increment
=> 100,
89 Table_Name
=> "Gnatlink.Linker_Options");
90 -- Comments needed ???
92 package Linker_Objects
is new Table
.Table
(
93 Table_Component_Type
=> String_Access
,
94 Table_Index_Type
=> Integer,
97 Table_Increment
=> 100,
98 Table_Name
=> "Gnatlink.Linker_Objects");
99 -- This table collects the objects file to be passed to the linker. In the
100 -- case where the linker command line is too long then programs objects
101 -- are put on the Response_File_Objects table. Note that the binder object
102 -- file and the user's objects remain in this table. This is very
103 -- important because on the GNU linker command line the -L switch is not
104 -- used to look for objects files but -L switch is used to look for
105 -- objects listed in the response file. This is not a problem with the
106 -- applications objects as they are specified with a full name.
108 package Response_File_Objects
is new Table
.Table
(
109 Table_Component_Type
=> String_Access
,
110 Table_Index_Type
=> Integer,
111 Table_Low_Bound
=> 1,
113 Table_Increment
=> 100,
114 Table_Name
=> "Gnatlink.Response_File_Objects");
115 -- This table collects the objects file that are to be put in the response
116 -- file. Only application objects are collected there (see details in
117 -- Linker_Objects table comments)
119 package Binder_Options_From_ALI
is new Table
.Table
(
120 Table_Component_Type
=> String_Access
,
121 Table_Index_Type
=> Integer,
122 Table_Low_Bound
=> 1, -- equals low bound of Argument_List for Spawn
124 Table_Increment
=> 100,
125 Table_Name
=> "Gnatlink.Binder_Options_From_ALI");
126 -- This table collects the switches from the ALI file of the main
129 package Binder_Options
is new Table
.Table
(
130 Table_Component_Type
=> String_Access
,
131 Table_Index_Type
=> Integer,
132 Table_Low_Bound
=> 1, -- equals low bound of Argument_List for Spawn
134 Table_Increment
=> 100,
135 Table_Name
=> "Gnatlink.Binder_Options");
136 -- This table collects the arguments to be passed to compile the binder
139 Gcc
: String_Access
:= Program_Name
("gcc", "gnatlink");
141 Read_Mode
: constant String := "r" & ASCII
.NUL
;
143 Begin_Info
: constant String := "-- BEGIN Object file/option list";
144 End_Info
: constant String := "-- END Object file/option list ";
146 Gcc_Path
: String_Access
;
147 Linker_Path
: String_Access
;
148 Output_File_Name
: String_Access
;
149 Ali_File_Name
: String_Access
;
150 Binder_Spec_Src_File
: String_Access
;
151 Binder_Body_Src_File
: String_Access
;
152 Binder_Ali_File
: String_Access
;
153 Binder_Obj_File
: String_Access
;
155 Base_Command_Name
: String_Access
;
157 Target_Debuggable_Suffix
: String_Access
;
159 Tname
: Temp_File_Name
;
160 Tname_FD
: File_Descriptor
:= Invalid_FD
;
161 -- Temporary file used by linker to pass list of object files on
162 -- certain systems with limitations on size of arguments.
164 Debug_Flag_Present
: Boolean := False;
165 Verbose_Mode
: Boolean := False;
166 Very_Verbose_Mode
: Boolean := False;
168 Standard_Gcc
: Boolean := True;
170 Compile_Bind_File
: Boolean := True;
171 -- Set to False if bind file is not to be compiled
173 Create_Map_File
: Boolean := False;
174 -- Set to True by switch -M. The map file name is derived from
175 -- the ALI file name (mainprog.ali => mainprog.map).
177 Object_List_File_Supported
: Boolean;
178 for Object_List_File_Supported
'Size use Character'Size;
180 (C
, Object_List_File_Supported
, "__gnat_objlist_file_supported");
181 -- Predicate indicating whether the linker has an option whereby the
182 -- names of object files can be passed to the linker in a file.
184 Object_File_Option_Ptr
: Interfaces
.C
.Strings
.chars_ptr
;
185 pragma Import
(C
, Object_File_Option_Ptr
, "__gnat_object_file_option");
186 -- Pointer to a string representing the linker option which specifies
187 -- the response file.
189 Object_File_Option
: constant String := Value
(Object_File_Option_Ptr
);
190 -- The linker option which specifies the response file as a string
192 Using_GNU_response_file
: constant Boolean :=
193 Object_File_Option
'Length > 0
194 and then Object_File_Option
(Object_File_Option
'Last) = '@';
195 -- Whether a GNU response file is used
197 Object_List_File_Required
: Boolean := False;
198 -- Set to True to force generation of a response file
200 Shared_Libgcc_Default
: Character;
201 for Shared_Libgcc_Default
'Size use Character'Size;
203 (C
, Shared_Libgcc_Default
, "__gnat_shared_libgcc_default");
204 -- Indicates wether libgcc should be statically linked (use 'T') or
205 -- dynamically linked (use 'H') by default.
207 function Base_Name
(File_Name
: String) return String;
208 -- Return just the file name part without the extension (if present)
210 procedure Check_Existing_Executable
(File_Name
: String);
211 -- Delete any existing executable to avoid accidentally updating the target
212 -- of a symbolic link, but produce a Fatail_Error if File_Name matches any
213 -- of the source file names. This avoids overwriting of extensionless
214 -- source files by accident on systems where executables do not have
217 procedure Delete
(Name
: String);
218 -- Wrapper to unlink as status is ignored by this application
220 procedure Error_Msg
(Message
: String);
221 -- Output the error or warning Message
223 procedure Exit_With_Error
(Error
: String);
224 -- Output Error and exit program with a fatal condition
226 procedure Process_Args
;
227 -- Go through all the arguments and build option tables
229 procedure Process_Binder_File
(Name
: String);
230 -- Reads the binder file and extracts linker arguments
235 procedure Write_Header
;
236 -- Show user the program name, version and copyright
238 procedure Write_Usage
;
239 -- Show user the program options
245 function Base_Name
(File_Name
: String) return String is
250 Findex1
:= File_Name
'First;
252 -- The file might be specified by a full path name. However,
253 -- we want the path to be stripped away.
255 for J
in reverse File_Name
'Range loop
256 if Is_Directory_Separator
(File_Name
(J
)) then
262 Findex2
:= File_Name
'Last;
263 while Findex2
> Findex1
and then File_Name
(Findex2
) /= '.' loop
264 Findex2
:= Findex2
- 1;
267 if Findex2
= Findex1
then
268 Findex2
:= File_Name
'Last + 1;
271 return File_Name
(Findex1
.. Findex2
- 1);
274 -------------------------------
275 -- Check_Existing_Executable --
276 -------------------------------
278 procedure Check_Existing_Executable
(File_Name
: String) is
279 Ename
: String := File_Name
;
280 Efile
: File_Name_Type
;
281 Sfile
: File_Name_Type
;
284 Canonical_Case_File_Name
(Ename
);
286 Add_Str_To_Name_Buffer
(Ename
);
289 for J
in Units
.Table
'First .. Units
.Last
loop
290 Sfile
:= Units
.Table
(J
).Sfile
;
291 if Sfile
= Efile
then
293 ("executable name """ & File_Name
& """ matches "
294 & "source file name """ & Get_Name_String
(Sfile
) & """");
299 end Check_Existing_Executable
;
305 procedure Delete
(Name
: String) is
307 pragma Unreferenced
(Status
);
309 Status
:= unlink
(Name
'Address);
310 -- Is it really right to ignore an error here ???
317 procedure Error_Msg
(Message
: String) is
319 Write_Str
(Base_Command_Name
.all);
325 ---------------------
326 -- Exit_With_Error --
327 ---------------------
329 procedure Exit_With_Error
(Error
: String) is
332 Exit_Program
(E_Fatal
);
339 procedure Process_Args
is
342 Skip_Next
: Boolean := False;
343 -- Set to true if the next argument is to be added into the list of
344 -- linker's argument without parsing it.
346 procedure Check_Version_And_Help
is new Check_Version_And_Help_G
(Usage
);
348 -- Start of processing for Process_Args
351 -- First, check for --version and --help
353 Check_Version_And_Help
("GNATLINK", "1996");
355 -- Loop through arguments of gnatlink command
359 exit when Next_Arg
> Argument_Count
;
361 Process_One_Arg
: declare
362 Arg
: constant String := Argument
(Next_Arg
);
365 -- Case of argument which is a switch
367 -- We definitely need section by section comments here ???
371 -- This argument must not be parsed, just add it to the
372 -- list of linker's options.
376 Linker_Options
.Increment_Last
;
377 Linker_Options
.Table
(Linker_Options
.Last
) :=
380 elsif Arg'Length /= 0 and then Arg (1) = '-' then
381 if Arg'Length > 4 and then Arg (2 .. 5) = "gnat" then
383 ("invalid switch: """ & Arg & """ (gnat not needed here)");
386 if Arg = "-Xlinker" then
388 -- Next argument should be sent directly to the linker.
389 -- We do not want to parse it here.
393 Linker_Options.Increment_Last;
394 Linker_Options.Table (Linker_Options.Last) :=
398 and then (Arg
'Length < 5 or else Arg
(2 .. 5) /= "gnat")
400 Debug_Flag_Present
:= True;
402 Linker_Options
.Increment_Last
;
403 Linker_Options
.Table
(Linker_Options
.Last
) :=
406 Binder_Options.Increment_Last;
407 Binder_Options.Table (Binder_Options.Last) :=
408 Linker_Options.Table (Linker_Options.Last);
410 elsif Arg'Length >= 3 and then Arg (2) = 'M
' then
412 Switches : String_List_Access;
415 Convert (Map_File, Arg (3 .. Arg'Last), Switches);
417 if Switches /= null then
418 for J in Switches'Range loop
419 Linker_Options.Increment_Last;
420 Linker_Options.Table (Linker_Options.Last) :=
426 elsif Arg'Length = 2 then
429 Linker_Options.Increment_Last;
430 Linker_Options.Table (Linker_Options.Last) :=
433 Binder_Options
.Increment_Last
;
434 Binder_Options
.Table
(Binder_Options
.Last
) :=
435 Linker_Options
.Table
(Linker_Options
.Last
);
437 Next_Arg
:= Next_Arg
+ 1;
439 if Next_Arg
> Argument_Count
then
440 Exit_With_Error
("Missing argument for -b");
443 Get_Machine_Name
: declare
444 Name_Arg
: constant String_Access
:=
445 new String'(Argument (Next_Arg));
448 Linker_Options.Increment_Last;
449 Linker_Options.Table (Linker_Options.Last) :=
452 Binder_Options.Increment_Last;
453 Binder_Options.Table (Binder_Options.Last) :=
456 end Get_Machine_Name;
459 if Object_List_File_Supported then
460 Object_List_File_Required := True;
463 ("Object list file not supported on this target");
467 Create_Map_File := True;
470 Compile_Bind_File := False;
473 Next_Arg := Next_Arg + 1;
475 if Next_Arg > Argument_Count then
476 Exit_With_Error ("Missing argument for -o");
480 new String'(Executable_Name
481 (Argument
(Next_Arg
),
482 Only_If_No_Suffix
=> True));
485 Opt
.CodePeer_Mode
:= True;
488 Opt
.Run_Path_Option
:= False;
492 -- Support "double" verbose mode. Second -v
493 -- gets sent to the linker and binder phases.
496 Very_Verbose_Mode
:= True;
498 Linker_Options
.Increment_Last
;
499 Linker_Options
.Table
(Linker_Options
.Last
) :=
502 Binder_Options.Increment_Last;
503 Binder_Options.Table (Binder_Options.Last) :=
504 Linker_Options.Table (Linker_Options.Last);
507 Verbose_Mode := True;
512 Linker_Options.Increment_Last;
513 Linker_Options.Table (Linker_Options.Last) :=
518 elsif Arg
(2) = 'B' then
519 Linker_Options
.Increment_Last
;
520 Linker_Options
.Table
(Linker_Options
.Last
) :=
523 Binder_Options.Increment_Last;
524 Binder_Options.Table (Binder_Options.Last) :=
525 Linker_Options.Table (Linker_Options.Last);
527 elsif Arg'Length >= 7 and then Arg (1 .. 7) = "--LINK=" then
528 if Arg'Length = 7 then
529 Exit_With_Error ("Missing argument for --LINK=");
533 L_Args : constant Argument_List_Access :=
534 Argument_String_To_List (Arg (8 .. Arg'Last));
536 -- The linker program is the first argument
539 System.OS_Lib.Locate_Exec_On_Path (L_Args.all (1).all);
541 if Linker_Path = null then
543 ("Could not locate linker: " & L_Args.all (1).all);
546 -- The other arguments are passed as-is to the linker
548 for J in 2 .. L_Args.all'Last loop
549 Gcc_Linker_Options.Increment_Last;
550 Gcc_Linker_Options.Table
551 (Gcc_Linker_Options.Last) :=
552 new String'(L_Args
.all (J
).all);
556 elsif Arg
'Length >= 6 and then Arg
(1 .. 6) = "--GCC=" then
557 if Arg
'Length = 6 then
558 Exit_With_Error
("Missing argument for --GCC=");
562 Program_Args
: constant Argument_List_Access
:=
563 Argument_String_To_List
564 (Arg
(7 .. Arg
'Last));
567 if Program_Args
.all (1).all /= Gcc
.all then
568 Gcc
:= new String'(Program_Args.all (1).all);
569 Standard_Gcc := False;
572 -- Set appropriate flags for switches passed
574 for J in 2 .. Program_Args.all'Last loop
576 Arg : constant String := Program_Args.all (J).all;
577 AF : constant Integer := Arg'First;
580 if Arg'Length /= 0 and then Arg (AF) = '-' then
581 if Arg (AF + 1) = 'g
'
582 and then (Arg'Length = 2
583 or else Arg (AF + 2) in '0' .. '3'
584 or else Arg (AF + 2 .. Arg'Last) = "coff")
586 Debug_Flag_Present := True;
590 -- Add directory to source search dirs so that
591 -- Get_Target_Parameters can find system.ads
593 if Arg (AF .. AF + 1) = "-I"
594 and then Arg'Length > 2
596 Add_Src_Search_Dir (Arg (AF + 2 .. Arg'Last));
599 -- Pass to gcc for compiling binder generated file
600 -- No use passing libraries, it will just generate
603 if not (Arg (AF .. AF + 1) = "-l"
604 or else Arg (AF .. AF + 1) = "-L")
606 Binder_Options.Increment_Last;
607 Binder_Options.Table (Binder_Options.Last) :=
611 -- Pass to gcc for linking program
613 Gcc_Linker_Options
.Increment_Last
;
614 Gcc_Linker_Options
.Table
615 (Gcc_Linker_Options
.Last
) := new String'(Arg);
620 -- Send all multi-character switches not recognized as
621 -- a special case by gnatlink to the linker/loader stage.
624 Linker_Options.Increment_Last;
625 Linker_Options.Table (Linker_Options.Last) :=
629 -- Here if argument is a file name rather than a switch
632 -- If explicit ali file, capture it
635 and then Arg
(Arg
'Last - 3 .. Arg
'Last) = ".ali"
637 if Ali_File_Name
= null then
638 Ali_File_Name
:= new String'(Arg);
640 Exit_With_Error ("cannot handle more than one ALI file");
643 -- If target object file, record object file
645 elsif Arg'Length > Get_Target_Object_Suffix.all'Length
648 Get_Target_Object_Suffix.all'Length + 1 .. Arg'Last)
649 = Get_Target_Object_Suffix.all
651 Linker_Objects.Increment_Last;
652 Linker_Objects.Table (Linker_Objects.Last) :=
655 -- If host object file, record object file
657 elsif Arg
'Length > Get_Object_Suffix
.all'Length
659 (Arg
'Last - Get_Object_Suffix
.all'Length + 1 .. Arg
'Last)
660 = Get_Object_Suffix
.all
662 Linker_Objects
.Increment_Last
;
663 Linker_Objects
.Table
(Linker_Objects
.Last
) :=
666 -- If corresponding ali file exists, capture it
668 elsif Ali_File_Name = null
669 and then Is_Regular_File (Arg & ".ali")
671 Ali_File_Name := new String'(Arg
& ".ali");
673 -- Otherwise assume this is a linker options entry, but
674 -- see below for interesting adjustment to this assumption.
677 Linker_Options
.Increment_Last
;
678 Linker_Options
.Table
(Linker_Options
.Last
) :=
684 Next_Arg := Next_Arg + 1;
687 -- Compile the bind file with warnings suppressed, because
688 -- otherwise the with of the main program may cause junk warnings.
690 Binder_Options.Increment_Last;
691 Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws");
693 -- If we did not get an ali file at all, and we had at least one
694 -- linker option, then assume that was the intended ali file after
695 -- all, so that we get a nicer message later on.
697 if Ali_File_Name
= null
698 and then Linker_Options
.Last
>= Linker_Options
.First
701 new String'(Linker_Options.Table (Linker_Options.First).all
706 -------------------------
707 -- Process_Binder_File --
708 -------------------------
710 procedure Process_Binder_File (Name : String) is
712 -- Binder file's descriptor
714 Link_Bytes : Integer := 0;
715 -- Projected number of bytes for the linker command line
718 pragma Import (C, Link_Max, "__gnat_link_max");
719 -- Maximum number of bytes on the command line supported by the OS
720 -- linker. Passed this limit the response file mechanism must be used
723 Next_Line : String (1 .. 1000);
724 -- Current line value
728 -- Current line slice (the slice does not contain line terminator)
731 -- Current line last character for shared libraries (without version)
733 Objs_Begin : Integer := 0;
734 -- First object file index in Linker_Objects table
736 Objs_End : Integer := 0;
737 -- Last object file index in Linker_Objects table
740 pragma Warnings (Off, Status);
741 -- Used for various Interfaces.C_Streams calls
743 Closing_Status : Boolean;
744 pragma Warnings (Off, Closing_Status);
747 GNAT_Static : Boolean := False;
748 -- Save state of -static option
750 GNAT_Shared : Boolean := False;
751 -- Save state of -shared option
753 Xlinker_Was_Previous : Boolean := False;
754 -- Indicate that "-Xlinker" was the option preceding the current option.
755 -- If True, then the current option is never suppressed.
759 -- These data items are used to store current binder file context. The
760 -- context is composed of the file descriptor position and the current
761 -- line together with the slice indexes (first and last position) for
762 -- this line. The rollback data are used by the Store_File_Context and
763 -- Rollback_File_Context routines below. The file context mechanism
764 -- interact only with the Get_Next_Line call. For example:
766 -- Store_File_Context;
768 -- Rollback_File_Context;
771 -- Both Get_Next_Line calls above will read the exact same data from
772 -- the file. In other words, Next_Line, Nfirst and Nlast variables
773 -- will be set with the exact same values.
775 RB_File_Pos : long; -- File position
776 RB_Next_Line : String (1 .. 1000); -- Current line content
777 RB_Nlast : Integer; -- Slice last index
778 RB_Nfirst : Integer; -- Slice first index
780 Run_Path_Option_Ptr : Interfaces.C.Strings.chars_ptr;
781 pragma Import (C, Run_Path_Option_Ptr, "__gnat_run_path_option");
782 -- Pointer to string representing the native linker option which
783 -- specifies the path where the dynamic loader should find shared
784 -- libraries. Equal to null string if this system doesn't support it.
786 Libgcc_Subdir_Ptr : Interfaces.C.Strings.chars_ptr;
787 pragma Import (C, Libgcc_Subdir_Ptr, "__gnat_default_libgcc_subdir");
788 -- Pointer to string indicating the installation subdirectory where
789 -- a default shared libgcc might be found.
791 Object_Library_Ext_Ptr : Interfaces.C.Strings.chars_ptr;
793 (C, Object_Library_Ext_Ptr, "__gnat_object_library_extension");
794 -- Pointer to string specifying the default extension for
795 -- object libraries, e.g. Unix uses ".a".
797 Separate_Run_Path_Options : Boolean;
798 for Separate_Run_Path_Options'Size use Character'Size;
800 (C, Separate_Run_Path_Options, "__gnat_separate_run_path_options");
801 -- Whether separate rpath options should be emitted for each directory
803 procedure Get_Next_Line;
804 -- Read the next line from the binder file without the line
807 function Index (S, Pattern : String) return Natural;
808 -- Return the last occurrence of Pattern in S, or 0 if none
810 procedure Store_File_Context;
811 -- Store current file context, Fd position and current line data.
812 -- The file context is stored into the rollback data above (RB_*).
813 -- Store_File_Context can be called at any time, only the last call
814 -- will be used (i.e. this routine overwrites the file context).
816 procedure Rollback_File_Context;
817 -- Restore file context from rollback data. This routine must be called
818 -- after Store_File_Context. The binder file context will be restored
819 -- with the data stored by the last Store_File_Context call.
821 procedure Write_RF (S : String);
822 -- Write a string to the response file and check if it was successful.
823 -- Fail the program if it was not successful (disk full).
829 procedure Get_Next_Line is
833 Fchars := fgets (Next_Line'Address, Next_Line'Length, Fd);
835 if Fchars = System.Null_Address then
836 Exit_With_Error ("Error reading binder output");
839 Nfirst := Next_Line'First;
841 while Nlast <= Next_Line'Last
842 and then Next_Line (Nlast) /= ASCII.LF
843 and then Next_Line (Nlast) /= ASCII.CR
855 function Index (S, Pattern : String) return Natural is
856 Len : constant Natural := Pattern'Length;
859 for J in reverse S'First .. S'Last - Len + 1 loop
860 if Pattern = S (J .. J + Len - 1) then
868 ---------------------------
869 -- Rollback_File_Context --
870 ---------------------------
872 procedure Rollback_File_Context is
874 Next_Line := RB_Next_Line;
877 Status := fseek (Fd, RB_File_Pos, Interfaces.C_Streams.SEEK_SET);
880 Exit_With_Error ("Error setting file position");
882 end Rollback_File_Context;
884 ------------------------
885 -- Store_File_Context --
886 ------------------------
888 procedure Store_File_Context is
889 use type System.CRTL.long;
892 RB_Next_Line := Next_Line;
895 RB_File_Pos := ftell (Fd);
897 if RB_File_Pos = -1 then
898 Exit_With_Error ("Error getting file position");
900 end Store_File_Context;
906 procedure Write_RF (S : String) is
907 Success : Boolean := True;
908 Back_Slash : constant Character := '\
';
911 -- If a GNU response file is used, space and backslash need to be
912 -- escaped because they are interpreted as a string separator and
913 -- an escape character respectively by the underlying mechanism.
914 -- On the other hand, quote and double-quote are not escaped since
915 -- they are interpreted as string delimiters on both sides.
917 if Using_GNU_response_file then
918 for J in S'Range loop
919 if S (J) = ' ' or else S (J) = '\
' then
920 if Write (Tname_FD, Back_Slash'Address, 1) /= 1 then
925 if Write (Tname_FD, S (J)'Address, 1) /= 1 then
931 if Write (Tname_FD, S'Address, S'Length) /= S'Length then
936 if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then
941 Exit_With_Error ("Error generating response file: disk full");
945 -- Start of processing for Process_Binder_File
948 Fd := fopen (Name'Address, Read_Mode'Address);
950 if Fd = NULL_Stream then
951 Exit_With_Error ("Failed to open binder output");
954 -- Skip up to the Begin Info line
958 exit when Next_Line (Nfirst .. Nlast) = Begin_Info;
964 -- Go to end when end line is reached (this will happen in
965 -- High_Integrity_Mode where no -L switches are generated)
967 exit when Next_Line (Nfirst .. Nlast) = End_Info;
969 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
972 -- Go to next section when switches are reached
974 exit when Next_Line (1) = '-';
976 -- Otherwise we have another object file to collect
978 Linker_Objects.Increment_Last;
980 -- Mark the positions of first and last object files in case they
981 -- need to be placed with a named file on systems having linker
984 if Objs_Begin = 0 then
985 Objs_Begin := Linker_Objects.Last;
988 Linker_Objects.Table (Linker_Objects.Last) :=
989 new String'(Next_Line
(Nfirst
.. Nlast
));
991 -- Nlast - Nfirst + 1, for the size, plus one for the space between
994 Link_Bytes
:= Link_Bytes
+ Nlast
- Nfirst
+ 2;
997 Objs_End
:= Linker_Objects
.Last
;
999 -- Continue to compute the Link_Bytes, the linker options are part of
1000 -- command line length.
1004 while Next_Line
(Nfirst
.. Nlast
) /= End_Info
loop
1005 Link_Bytes
:= Link_Bytes
+ Nlast
- Nfirst
+ 2;
1009 Rollback_File_Context
;
1011 -- On systems that have limitations on handling very long linker lines
1012 -- we make use of the system linker option which takes a list of object
1013 -- file names from a file instead of the command line itself. What we do
1014 -- is to replace the list of object files by the special linker option
1015 -- which then reads the object file list from a file instead. The option
1016 -- to read from a file instead of the command line is only triggered if
1017 -- a conservative threshold is passed.
1019 if Object_List_File_Required
1020 or else (Object_List_File_Supported
1021 and then Link_Bytes
> Link_Max
)
1023 -- Create a temporary file containing the Ada user object files
1024 -- needed by the link. This list is taken from the bind file and is
1025 -- output one object per line for maximal compatibility with linkers
1026 -- supporting this option.
1028 Create_Temp_File
(Tname_FD
, Tname
);
1030 -- ??? File descriptor should be checked to not be Invalid_FD.
1031 -- ??? Status of Write and Close operations should be checked, and
1032 -- failure should occur if a status is wrong.
1034 for J
in Objs_Begin
.. Objs_End
loop
1035 Write_RF
(Linker_Objects
.Table
(J
).all);
1037 Response_File_Objects
.Increment_Last
;
1038 Response_File_Objects
.Table
(Response_File_Objects
.Last
) :=
1039 Linker_Objects
.Table
(J
);
1042 Close
(Tname_FD
, Closing_Status
);
1044 -- Add the special objects list file option together with the name
1045 -- of the temporary file (removing the null character) to the objects
1048 Linker_Objects
.Table
(Objs_Begin
) :=
1049 new String'(Object_File_Option &
1050 Tname (Tname'First .. Tname'Last - 1));
1052 -- The slots containing these object file names are then removed
1053 -- from the objects table so they do not appear in the link. They are
1054 -- removed by moving up the linker options and non-Ada object files
1055 -- appearing after the Ada object list in the table.
1061 N := Objs_End - Objs_Begin + 1;
1063 for J in Objs_End + 1 .. Linker_Objects.Last loop
1064 Linker_Objects.Table (J - N + 1) := Linker_Objects.Table (J);
1067 Linker_Objects.Set_Last (Linker_Objects.Last - N + 1);
1071 -- Process switches and options
1073 if Next_Line (Nfirst .. Nlast) /= End_Info then
1074 Xlinker_Was_Previous := False;
1077 if Xlinker_Was_Previous
1078 or else Next_Line (Nfirst .. Nlast) = "-Xlinker"
1080 Linker_Options.Increment_Last;
1081 Linker_Options.Table (Linker_Options.Last) :=
1082 new String'(Next_Line
(Nfirst
.. Nlast
));
1084 elsif Next_Line
(Nfirst
.. Nlast
) = "-static" then
1085 GNAT_Static
:= True;
1087 elsif Next_Line
(Nfirst
.. Nlast
) = "-shared" then
1088 GNAT_Shared
:= True;
1090 -- Add binder options only if not already set on the command line.
1091 -- This rule is a way to control the linker options order.
1094 if Nlast
> Nfirst
+ 2 and then
1095 Next_Line
(Nfirst
.. Nfirst
+ 1) = "-L"
1097 -- Construct a library search path for use later to locate
1098 -- static gnatlib libraries.
1100 if Libpath
.Last
> 1 then
1101 Libpath
.Increment_Last
;
1102 Libpath
.Table
(Libpath
.Last
) := Path_Separator
;
1105 for I
in Nfirst
+ 2 .. Nlast
loop
1106 Libpath
.Increment_Last
;
1107 Libpath
.Table
(Libpath
.Last
) := Next_Line
(I
);
1110 Linker_Options
.Increment_Last
;
1112 Linker_Options
.Table
(Linker_Options
.Last
) :=
1113 new String'(Next_Line (Nfirst .. Nlast));
1115 elsif Next_Line (Nfirst .. Nlast) = "-lgnarl"
1116 or else Next_Line (Nfirst .. Nlast) = "-lgnat"
1119 (1 .. Natural'Min (Nlast, 8 + Library_Version'Length)) =
1120 Shared_Lib ("gnarl")
1123 (1 .. Natural'Min (Nlast, 7 + Library_Version'Length)) =
1126 -- If it is a shared library, remove the library version.
1127 -- We will be looking for the static version of the library
1128 -- as it is in the same directory as the shared version.
1130 if Next_Line (Nlast - Library_Version'Length + 1 .. Nlast) =
1133 -- Set Last to point to last character before the
1136 Last := Nlast - Library_Version'Length - 1;
1141 -- Given a Gnat standard library, search the library path to
1142 -- find the library location.
1144 -- Shouldn't we abstract a proc here, we are getting awfully
1145 -- heavily nested ???
1148 File_Path : String_Access;
1150 Object_Lib_Extension : constant String :=
1151 Value (Object_Library_Ext_Ptr);
1153 File_Name : constant String := "lib" &
1154 Next_Line (Nfirst + 2 .. Last) & Object_Lib_Extension;
1156 Run_Path_Opt : constant String :=
1157 Value (Run_Path_Option_Ptr);
1159 GCC_Index : Natural;
1160 Run_Path_Opt_Index : Natural := 0;
1164 Locate_Regular_File (File_Name,
1165 String (Libpath.Table (1 .. Libpath.Last)));
1167 if File_Path /= null then
1170 -- If static gnatlib found, explicitly specify to
1171 -- overcome possible linker default usage of shared
1174 Linker_Options.Increment_Last;
1176 Linker_Options.Table (Linker_Options.Last) :=
1177 new String'(File_Path
.all);
1179 elsif GNAT_Shared
then
1180 if Opt
.Run_Path_Option
then
1182 -- If shared gnatlib desired, add appropriate
1183 -- system specific switch so that it can be
1184 -- located at runtime.
1186 if Run_Path_Opt
'Length /= 0 then
1188 -- Output the system specific linker command
1189 -- that allows the image activator to find
1190 -- the shared library at runtime. Also add
1191 -- path to find libgcc_s.so, if relevant.
1194 Path
: String (1 .. File_Path
'Length + 15);
1196 Path_Last
: constant Natural :=
1200 Path
(1 .. File_Path
'Length) :=
1203 -- To find the location of the shared version
1204 -- of libgcc, we look for "gcc-lib" in the
1205 -- path of the library. However, this
1206 -- subdirectory is no longer present in
1207 -- recent versions of GCC. So, we look for
1208 -- the last subdirectory "lib" in the path.
1211 Index
(Path
(1 .. Path_Last
), "gcc-lib");
1213 if GCC_Index
/= 0 then
1215 -- The shared version of libgcc is
1216 -- located in the parent directory.
1218 GCC_Index
:= GCC_Index
- 1;
1223 (Path
(1 .. Path_Last
),
1226 if GCC_Index
= 0 then
1228 Index
(Path
(1 .. Path_Last
),
1229 Directory_Separator
& "lib"
1230 & Directory_Separator
);
1233 -- If we have found a "lib" subdir in
1234 -- the path to libgnat, the possible
1235 -- shared libgcc of interest by default
1236 -- is in libgcc_subdir at the same
1239 if GCC_Index
/= 0 then
1241 Subdir
: constant String :=
1242 Value
(Libgcc_Subdir_Ptr
);
1246 GCC_Index
+ Subdir
'Length) :=
1249 GCC_Index
+ Subdir
'Length;
1254 -- Look for an eventual run_path_option in
1255 -- the linker switches.
1257 if Separate_Run_Path_Options
then
1258 Linker_Options
.Increment_Last
;
1259 Linker_Options
.Table
1260 (Linker_Options
.Last
) :=
1264 (1 .. File_Path'Length
1265 - File_Name'Length));
1267 if GCC_Index /= 0 then
1268 Linker_Options.Increment_Last;
1269 Linker_Options.Table
1270 (Linker_Options.Last) :=
1273 & Path
(1 .. GCC_Index
));
1278 1 .. Linker_Options
.Last
1280 if Linker_Options
.Table
(J
) /= null
1282 Linker_Options
.Table
(J
)'Length
1283 > Run_Path_Opt
'Length
1285 Linker_Options
.Table
(J
)
1286 (1 .. Run_Path_Opt
'Length) =
1289 -- We have found an already
1290 -- specified run_path_option:
1291 -- we will add to this
1292 -- switch, because only one
1293 -- run_path_option should be
1296 Run_Path_Opt_Index
:= J
;
1301 -- If there is no run_path_option, we
1304 if Run_Path_Opt_Index
= 0 then
1305 Linker_Options
.Increment_Last
;
1308 if GCC_Index
= 0 then
1309 if Run_Path_Opt_Index
= 0 then
1310 Linker_Options
.Table
1311 (Linker_Options
.Last
) :=
1315 (1 .. File_Path'Length
1316 - File_Name'Length));
1319 Linker_Options.Table
1320 (Run_Path_Opt_Index) :=
1322 (Linker_Options
.Table
1323 (Run_Path_Opt_Index
).all
1326 (1 .. File_Path
'Length
1327 - File_Name
'Length));
1331 if Run_Path_Opt_Index
= 0 then
1332 Linker_Options
.Table
1333 (Linker_Options
.Last
) :=
1337 (1 .. File_Path'Length
1340 & Path (1 .. GCC_Index));
1343 Linker_Options.Table
1344 (Run_Path_Opt_Index) :=
1346 (Linker_Options
.Table
1347 (Run_Path_Opt_Index
).all
1350 (1 .. File_Path
'Length
1353 & Path
(1 .. GCC_Index
));
1361 -- Then we add the appropriate -l switch
1363 Linker_Options
.Increment_Last
;
1364 Linker_Options
.Table
(Linker_Options
.Last
) :=
1365 new String'(Next_Line (Nfirst .. Nlast));
1369 -- If gnatlib library not found, then add it anyway in
1370 -- case some other mechanism may find it.
1372 Linker_Options.Increment_Last;
1373 Linker_Options.Table (Linker_Options.Last) :=
1374 new String'(Next_Line
(Nfirst
.. Nlast
));
1378 Linker_Options
.Increment_Last
;
1379 Linker_Options
.Table
(Linker_Options
.Last
) :=
1380 new String'(Next_Line (Nfirst .. Nlast));
1384 Xlinker_Was_Previous := Next_Line (Nfirst .. Nlast) = "-Xlinker";
1387 exit when Next_Line (Nfirst .. Nlast) = End_Info;
1389 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
1394 -- If -shared was specified, invoke gcc with -shared-libgcc
1397 Linker_Options.Increment_Last;
1398 Linker_Options.Table (Linker_Options.Last) := Shared_Libgcc;
1401 Status := fclose (Fd);
1402 end Process_Binder_File;
1410 Write_Str ("Usage: ");
1411 Write_Str (Base_Command_Name.all);
1412 Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]");
1415 Write_Line (" mainprog.ali the ALI file of the main program");
1418 Display_Usage_Version_And_Help;
1419 Write_Line (" -f Force object file list to be generated");
1420 Write_Line (" -g Compile binder source file with debug information");
1421 Write_Line (" -n Do not compile the binder source file");
1422 Write_Line (" -P Process files for use by CodePeer");
1423 Write_Line (" -R Do not use a run_path_option");
1424 Write_Line (" -v Verbose mode");
1425 Write_Line (" -v -v Very verbose mode");
1427 Write_Line (" -o nam Use 'nam
' as the name of the executable");
1428 Write_Line (" -b target Compile the binder source to run on target");
1429 Write_Line (" -Bdir Load compiler executables from dir");
1431 if Is_Supported (Map_File) then
1432 Write_Line (" -Mmap Create map file map");
1433 Write_Line (" -M Create map file mainprog.map");
1436 Write_Line (" --GCC=comp Use 'comp
' as the compiler rather than 'gcc
'");
1437 Write_Line (" --LINK=lnk Use 'lnk
' as the linker rather than 'gcc
'");
1439 Write_Line (" [non-Ada-objects] list of non Ada object files");
1440 Write_Line (" [linker-options] other options for the linker");
1447 procedure Write_Header is
1449 if Verbose_Mode then
1451 Display_Version ("GNATLINK", "1995");
1459 procedure Write_Usage is
1465 -- Start of processing for Gnatlink
1468 -- Add the directory where gnatlink is invoked in front of the path, if
1469 -- gnatlink is invoked with directory information.
1472 Command : constant String := Command_Name;
1474 for Index in reverse Command'Range loop
1475 if Command (Index) = Directory_Separator then
1477 Absolute_Dir : constant String :=
1479 (Command (Command'First .. Index));
1481 PATH : constant String :=
1484 Getenv ("PATH").all;
1487 Setenv ("PATH", PATH);
1495 Base_Command_Name := new String'(Base_Name
(Command_Name
));
1498 if Argument_Count
= 0
1499 or else (Verbose_Mode
and then Argument_Count
= 1)
1502 Exit_Program
(E_Fatal
);
1505 -- Initialize packages to be used
1510 -- We always compile with -c
1512 Binder_Options_From_ALI
.Increment_Last
;
1513 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1516 if Ali_File_Name = null then
1517 Exit_With_Error ("no ali file given for link");
1520 if not Is_Regular_File (Ali_File_Name.all) then
1521 Exit_With_Error (Ali_File_Name.all & " not found");
1524 -- Read the ALI file of the main subprogram if the binder generated file
1525 -- needs to be compiled and no --GCC= switch has been specified. Fetch the
1526 -- back end switches from this ALI file and use these switches to compile
1527 -- the binder generated file
1529 if Compile_Bind_File and then Standard_Gcc then
1531 Name_Len := Ali_File_Name'Length;
1532 Name_Buffer (1 .. Name_Len) := Ali_File_Name.all;
1536 F : constant File_Name_Type := Name_Find;
1537 T : Text_Buffer_Ptr;
1541 -- Load the ALI file
1543 T := Read_Library_Info (F, True);
1545 -- Read it. Note that we ignore errors, since we only want very
1546 -- limited information from the ali file, and likely a slightly
1547 -- wrong version will be just fine, though in normal operation
1548 -- we don't expect this to happen.
1555 Ignore_Errors => True);
1557 if A /= No_ALI_Id then
1559 Index in Units.Table (ALIs.Table (A).First_Unit).First_Arg ..
1560 Units.Table (ALIs.Table (A).First_Unit).Last_Arg
1562 -- Do not compile with the front end switches. However, --RTS
1563 -- is to be dealt with specially because it needs to be passed
1564 -- to compile the file generated by the binder.
1567 Arg : String_Ptr renames Args.Table (Index);
1569 if not Is_Front_End_Switch (Arg.all) then
1570 Binder_Options_From_ALI.Increment_Last;
1571 Binder_Options_From_ALI.Table
1572 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1574 -- GNAT doesn't support GCC's multilib mechanism when it
1575 -- is configured with --disable-libada. This means that,
1576 -- when a multilib switch is used to request a particular
1577 -- compilation mode, the corresponding --RTS switch must
1578 -- also be specified. It is convenient to eliminate the
1579 -- redundancy by keying the compilation mode on a single
1580 -- switch, namely --RTS, and have the compiler reinstate
1581 -- the multilib switch (see gcc-interface/lang-specs.h).
1582 -- This switch must be passed to the driver at link time.
1585 and then Arg (Arg'First + 1 .. Arg'First + 4) = "mrtp"
1587 Linker_Options.Increment_Last;
1588 Linker_Options.Table
1589 (Linker_Options.Last) := String_Access (Arg);
1592 elsif Arg'Length > 5
1593 and then Arg (Arg'First + 2 .. Arg'First + 5) = "RTS="
1595 Binder_Options_From_ALI.Increment_Last;
1596 Binder_Options_From_ALI.Table
1597 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1599 -- Set the RTS_*_Path_Name variables, so that
1600 -- the correct directories will be set when
1601 -- Osint.Add_Default_Search_Dirs will be called later.
1603 Opt.RTS_Src_Path_Name :=
1605 (Arg (Arg'First + 6 .. Arg'Last), Include);
1607 Opt.RTS_Lib_Path_Name :=
1609 (Arg (Arg'First + 6 .. Arg'Last), Objects);
1617 -- Get target parameters
1619 Osint.Add_Default_Search_Dirs;
1620 Targparm.Get_Target_Parameters;
1622 -- Compile the bind file with the following switches:
1624 -- -gnatA stops reading gnat.adc, since we don't know what
1625 -- pragmas would work, and we do not need it anyway.
1627 -- -gnatWb allows brackets coding for wide characters
1629 -- -gnatiw allows wide characters in identifiers. This is needed
1630 -- because bindgen uses brackets encoding for all upper
1631 -- half and wide characters in identifier names.
1633 -- In addition, in CodePeer mode compile with -x adascil -gnatcC
1635 Binder_Options_From_ALI.Increment_Last;
1636 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1637 new String'("-gnatA");
1638 Binder_Options_From_ALI
.Increment_Last
;
1639 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1640 new String'("-gnatWb");
1641 Binder_Options_From_ALI.Increment_Last;
1642 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1643 new String'("-gnatiw");
1645 if Opt
.CodePeer_Mode
then
1646 Binder_Options_From_ALI
.Increment_Last
;
1647 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1649 Binder_Options_From_ALI.Increment_Last;
1650 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1651 new String'("adascil");
1652 Binder_Options_From_ALI
.Increment_Last
;
1653 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1654 new String'("-gnatcC");
1657 -- Locate all the necessary programs and verify required files are present
1659 Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all);
1661 if Gcc_Path = null then
1662 Exit_With_Error ("Couldn't locate " & Gcc.all);
1665 if Linker_Path = null then
1666 Linker_Path := Gcc_Path;
1671 Target_Debuggable_Suffix := Get_Target_Debuggable_Suffix;
1673 -- If no output name specified, then use the base name of .ali file name
1675 if Output_File_Name = null then
1677 new String'(Base_Name
(Ali_File_Name
.all)
1678 & Target_Debuggable_Suffix
.all);
1681 Linker_Options
.Increment_Last
;
1682 Linker_Options
.Table
(Linker_Options
.Last
) := new String'("-o");
1684 Linker_Options.Increment_Last;
1685 Linker_Options.Table (Linker_Options.Last) :=
1686 new String'(Output_File_Name
.all);
1688 Check_Existing_Executable
(Output_File_Name
.all);
1690 -- Warn if main program is called "test", as that may be a built-in command
1691 -- on Unix. On non-Unix systems executables have a suffix, so the warning
1692 -- will not appear. However, do not warn in the case of a cross compiler.
1694 -- Assume this is a cross tool if the executable name is not gnatlink.
1695 -- Note that the executable name is also gnatlink on windows, but in that
1696 -- case the output file name will be test.exe rather than test.
1698 if Base_Command_Name
.all = "gnatlink"
1699 and then Output_File_Name
.all = "test"
1701 Error_Msg
("warning: executable name """ & Output_File_Name
.all
1702 & """ may conflict with shell command");
1705 -- Special warnings for worrisome file names on windows
1707 -- Recent versions of Windows by default cause privilege escalation if an
1708 -- executable file name contains substrings "install", "setup", "update"
1709 -- or "patch". A console application will typically fail to load as a
1710 -- result, so we should warn the user.
1712 Bad_File_Names_On_Windows
: declare
1713 FN
: String := Output_File_Name
.all;
1715 procedure Check_File_Name
(S
: String);
1716 -- Warn if file name has the substring S
1718 procedure Check_File_Name
(S
: String) is
1720 for J
in 1 .. FN
'Length - (S
'Length - 1) loop
1721 if FN
(J
.. J
+ (S
'Length - 1)) = S
then
1723 ("warning: executable file name """ & Output_File_Name
.all
1724 & """ contains substring """ & S
& '"');
1726 ("admin privileges may be required to run this file");
1729 end Check_File_Name
;
1731 -- Start of processing for Bad_File_Names_On_Windows
1734 for J
in FN
'Range loop
1735 FN
(J
) := Csets
.Fold_Lower
(FN
(J
));
1738 -- For now we detect Windows by its executable suffix of .exe
1740 if Target_Debuggable_Suffix
.all = ".exe" then
1741 Check_File_Name
("install");
1742 Check_File_Name
("setup");
1743 Check_File_Name
("update");
1744 Check_File_Name
("patch");
1746 end Bad_File_Names_On_Windows
;
1748 -- If -M switch was specified, add the switches to create the map file
1750 if Create_Map_File
then
1752 Map_Name
: constant String := Base_Name
(Ali_File_Name
.all) & ".map";
1753 Switches
: String_List_Access
;
1756 Convert
(Map_File
, Map_Name
, Switches
);
1758 if Switches
/= null then
1759 for J
in Switches
'Range loop
1760 Linker_Options
.Increment_Last
;
1761 Linker_Options
.Table
(Linker_Options
.Last
) := Switches
(J
);
1767 -- Perform consistency checks
1769 -- Transform the .ali file name into the binder output file name
1771 Make_Binder_File_Names
: declare
1772 Fname
: constant String := Base_Name
(Ali_File_Name
.all);
1773 Fname_Len
: Integer := Fname
'Length;
1775 function Get_Maximum_File_Name_Length
return Integer;
1776 pragma Import
(C
, Get_Maximum_File_Name_Length
,
1777 "__gnat_get_maximum_file_name_length");
1779 Maximum_File_Name_Length
: constant Integer :=
1780 Get_Maximum_File_Name_Length
;
1782 Bind_File_Prefix
: Types
.String_Ptr
;
1783 -- Contains prefix used for bind files
1788 Bind_File_Prefix
:= new String'("b~");
1790 -- If the length of the binder file becomes too long due to
1791 -- the addition of the "b?" prefix, then truncate it.
1793 if Maximum_File_Name_Length > 0 then
1795 Maximum_File_Name_Length - Bind_File_Prefix.all'Length
1797 Fname_Len := Fname_Len - 1;
1802 Fnam : constant String :=
1803 Bind_File_Prefix.all &
1804 Fname (Fname'First .. Fname'First + Fname_Len - 1);
1807 Binder_Spec_Src_File := new String'(Fnam
& ".ads");
1808 Binder_Body_Src_File
:= new String'(Fnam & ".adb");
1809 Binder_Ali_File := new String'(Fnam
& ".ali");
1811 Binder_Obj_File
:= new String'(Fnam & Get_Target_Object_Suffix.all);
1814 if Fname_Len /= Fname'Length then
1815 Binder_Options.Increment_Last;
1816 Binder_Options.Table (Binder_Options.Last) := new String'("-o");
1817 Binder_Options
.Increment_Last
;
1818 Binder_Options
.Table
(Binder_Options
.Last
) := Binder_Obj_File
;
1820 end Make_Binder_File_Names
;
1822 Process_Binder_File
(Binder_Body_Src_File
.all & ASCII
.NUL
);
1824 -- Compile the binder file. This is fast, so we always do it, unless
1825 -- specifically told not to by the -n switch
1827 if Compile_Bind_File
then
1831 Args
: Argument_List
1832 (1 .. Binder_Options_From_ALI
.Last
+ Binder_Options
.Last
+ 1);
1835 for J
in 1 .. Binder_Options_From_ALI
.Last
loop
1836 Args
(J
) := Binder_Options_From_ALI
.Table
(J
);
1839 for J
in 1 .. Binder_Options
.Last
loop
1840 Args
(Binder_Options_From_ALI
.Last
+ J
) :=
1841 Binder_Options
.Table
(J
);
1844 -- Use the full path of the binder generated source, so that it is
1845 -- guaranteed that the debugger will find this source, even with
1849 new String'(Normalize_Pathname (Binder_Body_Src_File.all));
1851 if Verbose_Mode then
1852 Write_Str (Base_Name (Gcc_Path.all));
1854 for J in Args'Range loop
1856 Write_Str (Args (J).all);
1862 System.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
1865 Exit_Program (E_Fatal);
1870 -- In CodePeer mode, there's nothing left to do after the binder file has
1873 if Opt.CodePeer_Mode then
1874 if Tname_FD /= Invalid_FD then
1881 -- Now, actually link the program
1884 Num_Args : Natural :=
1885 (Linker_Options.Last - Linker_Options.First + 1) +
1886 (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) +
1887 (Linker_Objects.Last - Linker_Objects.First + 1);
1888 Stack_Op : Boolean := False;
1891 -- Remove duplicate stack size setting from the Linker_Options table.
1892 -- The stack setting option "-Xlinker --stack=R,C" can be found
1893 -- in one line when set by a pragma Linker_Options or in two lines
1894 -- ("-Xlinker" then "--stack=R,C") when set on the command line. We
1895 -- also check for the "-Wl,--stack=R" style option.
1897 -- We must remove the second stack setting option instance because
1898 -- the one on the command line will always be the first one. And any
1899 -- subsequent stack setting option will overwrite the previous one.
1900 -- This is done especially for GNAT/NT where we set the stack size
1901 -- for tasking programs by a pragma in the NT specific tasking
1902 -- package System.Task_Primitives.Operations.
1904 -- Note: This is not a FOR loop that runs from Linker_Options.First
1905 -- to Linker_Options.Last, since operations within the loop can
1906 -- modify the length of the table.
1908 Clean_Link_Option_Set : declare
1910 Shared_Libgcc_Seen : Boolean := False;
1913 J := Linker_Options.First;
1914 while J <= Linker_Options.Last loop
1915 if Linker_Options.Table (J).all = "-Xlinker"
1916 and then J < Linker_Options.Last
1917 and then Linker_Options.Table (J + 1)'Length > 8
1918 and then Linker_Options.Table (J + 1) (1 .. 8) = "--stack="
1921 Linker_Options.Table (J .. Linker_Options.Last - 2) :=
1922 Linker_Options.Table (J + 2 .. Linker_Options.Last);
1923 Linker_Options.Decrement_Last;
1924 Linker_Options.Decrement_Last;
1925 Num_Args := Num_Args - 2;
1932 -- Remove duplicate -shared-libgcc switch
1934 if Linker_Options.Table (J).all = Shared_Libgcc_String then
1935 if Shared_Libgcc_Seen then
1936 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1937 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1938 Linker_Options.Decrement_Last;
1939 Num_Args := Num_Args - 1;
1942 Shared_Libgcc_Seen := True;
1946 -- Here we just check for a canonical form that matches the
1947 -- pragma Linker_Options set in the NT runtime.
1949 if (Linker_Options.Table (J)'Length > 17
1950 and then Linker_Options.Table (J) (1 .. 17) =
1951 "-Xlinker --stack=")
1953 (Linker_Options.Table (J)'Length > 12
1954 and then Linker_Options.Table (J) (1 .. 12) =
1958 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1959 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1960 Linker_Options.Decrement_Last;
1961 Num_Args := Num_Args - 1;
1971 if Linker_Path = Gcc_Path then
1973 -- For systems where the default is to link statically with
1974 -- libgcc, if gcc is not called with -shared-libgcc, call it
1975 -- with -static-libgcc, as there are some platforms where one
1976 -- of these two switches is compulsory to link.
1978 if Shared_Libgcc_Default = 'T
'
1979 and then not Shared_Libgcc_Seen
1981 Linker_Options.Increment_Last;
1982 Linker_Options.Table (Linker_Options.Last) := Static_Libgcc;
1983 Num_Args := Num_Args + 1;
1986 end Clean_Link_Option_Set;
1988 -- Prepare arguments for call to linker
1990 Call_Linker : declare
1992 Args : Argument_List (1 .. Num_Args + 1);
1993 Index : Integer := Args'First;
1996 Args (Index) := Binder_Obj_File;
1998 -- Add the object files and any -largs libraries
2000 for J in Linker_Objects.First .. Linker_Objects.Last loop
2002 Args (Index) := Linker_Objects.Table (J);
2005 -- Add the linker options from the binder file
2007 for J in Linker_Options.First .. Linker_Options.Last loop
2009 Args (Index) := Linker_Options.Table (J);
2012 -- Finally add the libraries from the --GCC= switch
2014 for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop
2016 Args (Index) := Gcc_Linker_Options.Table (J);
2019 if Verbose_Mode then
2020 Write_Str (Linker_Path.all);
2022 for J in Args'Range loop
2024 Write_Str (Args (J).all);
2029 -- If we are on very verbose mode (-v -v) and a response file
2030 -- is used we display its content.
2032 if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then
2034 Write_Str ("Response file (" &
2035 Tname (Tname'First .. Tname'Last - 1) &
2040 Response_File_Objects.First .. Response_File_Objects.Last
2042 Write_Str (Response_File_Objects.Table (J).all);
2050 System.OS_Lib.Spawn (Linker_Path.all, Args, Success);
2052 -- Delete the temporary file used in conjunction with linking if one
2053 -- was created. See Process_Bind_File for details.
2055 if Tname_FD /= Invalid_FD then
2060 Error_Msg ("error when calling " & Linker_Path.all);
2061 Exit_Program (E_Fatal);
2066 -- Only keep the binder output file and it's associated object
2067 -- file if compiling with the -g option. These files are only
2068 -- useful if debugging.
2070 if not Debug_Flag_Present then
2071 Delete (Binder_Ali_File.all & ASCII.NUL);
2072 Delete (Binder_Spec_Src_File.all & ASCII.NUL);
2073 Delete (Binder_Body_Src_File.all & ASCII.NUL);
2074 Delete (Binder_Obj_File.all & ASCII.NUL);
2077 Exit_Program (E_Success);
2081 Write_Line (Exception_Information (X));
2082 Exit_With_Error ("INTERNAL ERROR. Please report");