1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1996-2023, 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 -- Options to be passed to the gcc linker
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 -- Library search path
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 -- Options to be passed to gnatlink
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.
208 pragma Import
(C
, Link_Max
, "__gnat_link_max");
209 -- Maximum number of bytes on the command line supported by the OS
210 -- linker. Passed this limit the response file mechanism must be used
213 Run_Path_Option_Ptr
: Interfaces
.C
.Strings
.chars_ptr
;
214 pragma Import
(C
, Run_Path_Option_Ptr
, "__gnat_run_path_option");
215 -- Pointer to string representing the native linker option which
216 -- specifies the path where the dynamic loader should find shared
217 -- libraries. Equal to null string if this system doesn't support it.
219 Libgcc_Subdir_Ptr
: Interfaces
.C
.Strings
.chars_ptr
;
220 pragma Import
(C
, Libgcc_Subdir_Ptr
, "__gnat_default_libgcc_subdir");
221 -- Pointer to string indicating the installation subdirectory where
222 -- a default shared libgcc might be found.
224 Object_Library_Ext_Ptr
: Interfaces
.C
.Strings
.chars_ptr
;
226 (C
, Object_Library_Ext_Ptr
, "__gnat_object_library_extension");
227 -- Pointer to string specifying the default extension for
228 -- object libraries, e.g. Unix uses ".a".
230 Separate_Run_Path_Options
: Boolean;
231 for Separate_Run_Path_Options
'Size use Character'Size;
233 (C
, Separate_Run_Path_Options
, "__gnat_separate_run_path_options");
234 -- Whether separate rpath options should be emitted for each directory
236 function Get_Maximum_File_Name_Length
return Integer;
237 pragma Import
(C
, Get_Maximum_File_Name_Length
,
238 "__gnat_get_maximum_file_name_length");
240 function Base_Name
(File_Name
: String) return String;
241 -- Return just the file name part without the extension (if present)
243 procedure Check_Existing_Executable
(File_Name
: String);
244 -- Delete any existing executable to avoid accidentally updating the target
245 -- of a symbolic link, but produce a Fatal_Error if File_Name matches any
246 -- of the source file names. This avoids overwriting of extensionless
247 -- source files by accident on systems where executables do not have
250 procedure Delete
(Name
: String);
251 -- Wrapper to unlink as status is ignored by this application
253 procedure Error_Msg
(Message
: String);
254 -- Output the error or warning Message
256 procedure Exit_With_Error
(Error
: String);
257 -- Output Error and exit program with a fatal condition
259 procedure Process_Args
;
260 -- Go through all the arguments and build option tables
262 procedure Process_Binder_File
(Name
: String);
263 -- Reads the binder file and extracts linker arguments
265 function Index
(S
, Pattern
: String) return Natural;
266 -- Return the last occurrence of Pattern in S, or 0 if none
268 procedure Search_Library_Path
273 GNAT_Static
: Boolean;
274 GNAT_Shared
: Boolean);
275 -- Given a Gnat standard library, search the library path to find the
276 -- library location. Parameters are documented in Process_Binder_File.
281 procedure Write_Header
;
282 -- Show user the program name, version and copyright
284 procedure Write_Usage
;
285 -- Show user the program options
291 function Base_Name
(File_Name
: String) return String is
296 Findex1
:= File_Name
'First;
298 -- The file might be specified by a full path name. However,
299 -- we want the path to be stripped away.
301 for J
in reverse File_Name
'Range loop
302 if Is_Directory_Separator
(File_Name
(J
)) then
308 Findex2
:= File_Name
'Last;
309 while Findex2
> Findex1
and then File_Name
(Findex2
) /= '.' loop
310 Findex2
:= Findex2
- 1;
313 if Findex2
= Findex1
then
314 Findex2
:= File_Name
'Last + 1;
317 return File_Name
(Findex1
.. Findex2
- 1);
320 -------------------------------
321 -- Check_Existing_Executable --
322 -------------------------------
324 procedure Check_Existing_Executable
(File_Name
: String) is
325 Ename
: String := File_Name
;
326 Efile
: File_Name_Type
;
327 Sfile
: File_Name_Type
;
330 Canonical_Case_File_Name
(Ename
);
332 Add_Str_To_Name_Buffer
(Ename
);
335 for J
in Units
.Table
'First .. Units
.Last
loop
336 Sfile
:= Units
.Table
(J
).Sfile
;
337 if Sfile
= Efile
then
339 ("executable name """ & File_Name
& """ matches "
340 & "source file name """ & Get_Name_String
(Sfile
) & """");
345 end Check_Existing_Executable
;
351 procedure Delete
(Name
: String) is
353 pragma Unreferenced
(Status
);
355 Status
:= unlink
(Name
'Address);
362 procedure Error_Msg
(Message
: String) is
364 Write_Str
(Base_Command_Name
.all);
370 ---------------------
371 -- Exit_With_Error --
372 ---------------------
374 procedure Exit_With_Error
(Error
: String) is
377 Exit_Program
(E_Fatal
);
384 function Index
(S
, Pattern
: String) return Natural is
385 Len
: constant Natural := Pattern
'Length;
388 for J
in reverse S
'First .. S
'Last - Len
+ 1 loop
389 if Pattern
= S
(J
.. J
+ Len
- 1) then
401 procedure Process_Args
is
404 Skip_Next
: Boolean := False;
405 -- Set to true if the next argument is to be added into the list of
406 -- linker's argument without parsing it.
408 procedure Check_Version_And_Help
is new Check_Version_And_Help_G
(Usage
);
410 -- Start of processing for Process_Args
413 -- First, check for --version and --help
415 Check_Version_And_Help
("GNATLINK", "1996");
417 -- Loop through arguments of gnatlink command
421 exit when Next_Arg
> Argument_Count
;
423 Process_One_Arg
: declare
424 Arg
: constant String := Argument
(Next_Arg
);
427 -- This argument must not be parsed, just add it to the list of
434 Linker_Options
.Increment_Last
;
435 Linker_Options
.Table
(Linker_Options
.Last
) :=
438 -- Case of argument which is a switch
440 elsif Arg'Length /= 0 and then Arg (1) = '-' then
441 if Arg'Length > 4 and then Arg (2 .. 5) = "gnat" then
443 ("invalid switch: """ & Arg & """ (gnat not needed here)");
446 if Arg = "-Xlinker" then
448 -- Next argument should be sent directly to the linker.
449 -- We do not want to parse it here.
453 Linker_Options.Increment_Last;
454 Linker_Options.Table (Linker_Options.Last) :=
458 and then (Arg
'Length < 5 or else Arg
(2 .. 5) /= "gnat")
460 Debug_Flag_Present
:= True;
462 Linker_Options
.Increment_Last
;
463 Linker_Options
.Table
(Linker_Options
.Last
) :=
466 Binder_Options.Increment_Last;
467 Binder_Options.Table (Binder_Options.Last) :=
468 Linker_Options.Table (Linker_Options.Last);
470 elsif Arg'Length >= 3 and then Arg (2) = 'M
' then
472 Switches : String_List_Access;
475 Convert (Map_File, Arg (3 .. Arg'Last), Switches);
477 if Switches /= null then
478 for J in Switches'Range loop
479 Linker_Options.Increment_Last;
480 Linker_Options.Table (Linker_Options.Last) :=
486 elsif Arg'Length = 2 then
489 if Object_List_File_Supported then
490 Object_List_File_Required := True;
493 ("Object list file not supported on this target");
497 Create_Map_File := True;
500 Compile_Bind_File := False;
503 Next_Arg := Next_Arg + 1;
505 if Next_Arg > Argument_Count then
506 Exit_With_Error ("Missing argument for -o");
510 new String'(Executable_Name
511 (Argument
(Next_Arg
),
512 Only_If_No_Suffix
=> True));
515 Opt
.CodePeer_Mode
:= True;
518 Opt
.Run_Path_Option
:= False;
522 -- Support "double" verbose mode. Second -v
523 -- gets sent to the linker and binder phases.
526 Very_Verbose_Mode
:= True;
528 Linker_Options
.Increment_Last
;
529 Linker_Options
.Table
(Linker_Options
.Last
) :=
532 Binder_Options.Increment_Last;
533 Binder_Options.Table (Binder_Options.Last) :=
534 Linker_Options.Table (Linker_Options.Last);
537 Verbose_Mode := True;
542 Linker_Options.Increment_Last;
543 Linker_Options.Table (Linker_Options.Last) :=
548 elsif Arg
(2) = 'B' then
549 Linker_Options
.Increment_Last
;
550 Linker_Options
.Table
(Linker_Options
.Last
) :=
553 Binder_Options.Increment_Last;
554 Binder_Options.Table (Binder_Options.Last) :=
555 Linker_Options.Table (Linker_Options.Last);
557 elsif Arg'Length >= 7 and then Arg (1 .. 7) = "--LINK=" then
558 if Arg'Length = 7 then
559 Exit_With_Error ("Missing argument for --LINK=");
563 L_Args : constant Argument_List_Access :=
564 Argument_String_To_List (Arg (8 .. Arg'Last));
566 -- The linker program is the first argument
569 System.OS_Lib.Locate_Exec_On_Path (L_Args.all (1).all);
571 if Linker_Path = null then
573 ("Could not locate linker: " & L_Args.all (1).all);
576 -- The other arguments are passed as-is to the linker and
577 -- override those coming from --GCC= if any.
579 if L_Args.all'Last >= 2 then
580 Gcc_Linker_Options.Set_Last (0);
583 for J in 2 .. L_Args.all'Last loop
584 Gcc_Linker_Options.Increment_Last;
585 Gcc_Linker_Options.Table
586 (Gcc_Linker_Options.Last) :=
587 new String'(L_Args
.all (J
).all);
591 elsif Arg
'Length >= 6 and then Arg
(1 .. 6) = "--GCC=" then
592 if Arg
'Length = 6 then
593 Exit_With_Error
("Missing argument for --GCC=");
597 Program_Args
: constant Argument_List_Access
:=
598 Argument_String_To_List
599 (Arg
(7 .. Arg
'Last));
602 if Program_Args
.all (1).all /= Gcc
.all then
603 Gcc
:= new String'(Program_Args.all (1).all);
604 Standard_Gcc := False;
607 -- Set appropriate flags for switches passed
609 for J in 2 .. Program_Args.all'Last loop
611 Arg : constant String := Program_Args.all (J).all;
612 AF : constant Integer := Arg'First;
615 if Arg'Length /= 0 and then Arg (AF) = '-' then
616 if Arg (AF + 1) = 'g
'
617 and then (Arg'Length = 2
618 or else Arg (AF + 2) in '0' .. '3'
619 or else Arg (AF + 2 .. Arg'Last) = "coff")
621 Debug_Flag_Present := True;
625 -- Add directory to source search dirs so that
626 -- Get_Target_Parameters can find system.ads
628 if Arg (AF .. AF + 1) = "-I"
629 and then Arg'Length > 2
631 Add_Src_Search_Dir (Arg (AF + 2 .. Arg'Last));
634 -- Pass to gcc for compiling binder generated file
635 -- No use passing libraries, it will just generate
638 if not (Arg (AF .. AF + 1) = "-l"
639 or else Arg (AF .. AF + 1) = "-L")
641 Binder_Options.Increment_Last;
642 Binder_Options.Table (Binder_Options.Last) :=
646 -- Pass to gcc for linking program
648 Gcc_Linker_Options
.Increment_Last
;
649 Gcc_Linker_Options
.Table
650 (Gcc_Linker_Options
.Last
) := new String'(Arg);
655 -- Send all multi-character switches not recognized as
656 -- a special case by gnatlink to the linker/loader stage.
659 Linker_Options.Increment_Last;
660 Linker_Options.Table (Linker_Options.Last) :=
664 -- Here if argument is a file name rather than a switch
667 -- If explicit ali file, capture it
670 and then Arg
(Arg
'Last - 3 .. Arg
'Last) = ".ali"
672 if Ali_File_Name
= null then
673 Ali_File_Name
:= new String'(Arg);
675 Exit_With_Error ("cannot handle more than one ALI file");
678 -- If target object file, record object file
680 elsif Arg'Length > Get_Target_Object_Suffix.all'Length
683 Get_Target_Object_Suffix.all'Length + 1 .. Arg'Last)
684 = Get_Target_Object_Suffix.all
686 Linker_Objects.Increment_Last;
687 Linker_Objects.Table (Linker_Objects.Last) :=
690 -- If host object file, record object file
692 elsif Arg
'Length > Get_Object_Suffix
.all'Length
694 (Arg
'Last - Get_Object_Suffix
.all'Length + 1 .. Arg
'Last)
695 = Get_Object_Suffix
.all
697 Linker_Objects
.Increment_Last
;
698 Linker_Objects
.Table
(Linker_Objects
.Last
) :=
701 -- If corresponding ali file exists, capture it
703 elsif Ali_File_Name = null
704 and then Is_Regular_File (Arg & ".ali")
706 Ali_File_Name := new String'(Arg
& ".ali");
708 -- Otherwise assume this is a linker options entry, but
709 -- see below for interesting adjustment to this assumption.
712 Linker_Options
.Increment_Last
;
713 Linker_Options
.Table
(Linker_Options
.Last
) :=
719 Next_Arg := Next_Arg + 1;
722 -- Compile the bind file with warnings suppressed, because
723 -- otherwise the with of the main program may cause junk warnings.
725 Binder_Options.Increment_Last;
726 Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws");
728 -- If we did not get an ali file at all, and we had at least one
729 -- linker option, then assume that was the intended ali file after
730 -- all, so that we get a nicer message later on.
732 if Ali_File_Name
= null
733 and then Linker_Options
.Last
>= Linker_Options
.First
736 new String'(Linker_Options.Table (Linker_Options.First).all
741 -------------------------
742 -- Process_Binder_File --
743 -------------------------
745 procedure Process_Binder_File (Name : String) is
747 -- Binder file's descriptor
749 Link_Bytes : Integer := 0;
750 -- Projected number of bytes for the linker command line
752 Next_Line : String (1 .. 1000);
753 -- Current line value
757 -- Current line slice (the slice does not contain line terminator)
760 -- Current line last character for shared libraries (without version)
762 Objs_Begin : Integer := 0;
763 -- First object file index in Linker_Objects table
765 Objs_End : Integer := 0;
766 -- Last object file index in Linker_Objects table
769 pragma Warnings (Off, Status);
770 -- Used for various Interfaces.C_Streams calls
772 Closing_Status : Boolean;
773 pragma Warnings (Off, Closing_Status);
776 GNAT_Static : Boolean := False;
777 -- Save state of -static option
779 GNAT_Shared : Boolean := False;
780 -- Save state of -shared option
782 Xlinker_Was_Previous : Boolean := False;
783 -- Indicate that "-Xlinker" was the option preceding the current option.
784 -- If True, then the current option is never suppressed.
788 -- These data items are used to store current binder file context. The
789 -- context is composed of the file descriptor position and the current
790 -- line together with the slice indexes (first and last position) for
791 -- this line. The rollback data are used by the Store_File_Context and
792 -- Rollback_File_Context routines below. The file context mechanism
793 -- interact only with the Get_Next_Line call. For example:
795 -- Store_File_Context;
797 -- Rollback_File_Context;
800 -- Both Get_Next_Line calls above will read the exact same data from
801 -- the file. In other words, Next_Line, Nfirst and Nlast variables
802 -- will be set with the exact same values.
804 RB_File_Pos : long; -- File position
805 RB_Next_Line : String (1 .. 1000); -- Current line content
806 RB_Nlast : Integer; -- Slice last index
807 RB_Nfirst : Integer; -- Slice first index
809 procedure Get_Next_Line;
810 -- Read the next line from the binder file without the line
813 procedure Store_File_Context;
814 -- Store current file context, Fd position and current line data.
815 -- The file context is stored into the rollback data above (RB_*).
816 -- Store_File_Context can be called at any time, only the last call
817 -- will be used (i.e. this routine overwrites the file context).
819 procedure Rollback_File_Context;
820 -- Restore file context from rollback data. This routine must be called
821 -- after Store_File_Context. The binder file context will be restored
822 -- with the data stored by the last Store_File_Context call.
824 procedure Write_RF (S : String);
825 -- Write a string to the response file and check if it was successful.
826 -- Fail the program if it was not successful (disk full).
832 procedure Get_Next_Line is
836 Fchars := fgets (Next_Line'Address, Next_Line'Length, Fd);
838 if Fchars = System.Null_Address then
839 Exit_With_Error ("Error reading binder output");
842 Nfirst := Next_Line'First;
844 while Nlast <= Next_Line'Last
845 and then Next_Line (Nlast) /= ASCII.LF
846 and then Next_Line (Nlast) /= ASCII.CR
854 ---------------------------
855 -- Rollback_File_Context --
856 ---------------------------
858 procedure Rollback_File_Context is
860 Next_Line := RB_Next_Line;
863 Status := fseek (Fd, RB_File_Pos, Interfaces.C_Streams.SEEK_SET);
866 Exit_With_Error ("Error setting file position");
868 end Rollback_File_Context;
870 ------------------------
871 -- Store_File_Context --
872 ------------------------
874 procedure Store_File_Context is
875 use type System.CRTL.long;
878 RB_Next_Line := Next_Line;
881 RB_File_Pos := ftell (Fd);
883 if RB_File_Pos = -1 then
884 Exit_With_Error ("Error getting file position");
886 end Store_File_Context;
892 procedure Write_RF (S : String) is
893 Success : Boolean := True;
894 Back_Slash : constant Character := '\
';
897 -- If a GNU response file is used, space and backslash need to be
898 -- escaped because they are interpreted as a string separator and
899 -- an escape character respectively by the underlying mechanism.
900 -- On the other hand, quote and double-quote are not escaped since
901 -- they are interpreted as string delimiters on both sides.
903 if Using_GNU_response_file then
904 for J in S'Range loop
905 if S (J) = ' ' or else S (J) = '\
' then
906 if Write (Tname_FD, Back_Slash'Address, 1) /= 1 then
911 if Write (Tname_FD, S (J)'Address, 1) /= 1 then
917 if Write (Tname_FD, S'Address, S'Length) /= S'Length then
922 if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then
927 Exit_With_Error ("Error generating response file: disk full");
931 -- Start of processing for Process_Binder_File
934 Fd := fopen (Name'Address, Read_Mode'Address);
936 if Fd = NULL_Stream then
937 Exit_With_Error ("Failed to open binder output");
940 -- Skip up to the Begin Info line
944 exit when Next_Line (Nfirst .. Nlast) = Begin_Info;
950 -- Go to end when end line is reached (this will happen in
951 -- High_Integrity_Mode where no -L switches are generated)
953 exit when Next_Line (Nfirst .. Nlast) = End_Info;
955 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
958 -- Go to next section when switches are reached
960 exit when Next_Line (1) = '-';
962 -- Otherwise we have another object file to collect
964 Linker_Objects.Increment_Last;
966 -- Mark the positions of first and last object files in case they
967 -- need to be placed with a named file on systems having linker
970 if Objs_Begin = 0 then
971 Objs_Begin := Linker_Objects.Last;
974 Linker_Objects.Table (Linker_Objects.Last) :=
975 new String'(Next_Line
(Nfirst
.. Nlast
));
977 -- Nlast - Nfirst + 1, for the size, plus one for the space between
980 Link_Bytes
:= Link_Bytes
+ Nlast
- Nfirst
+ 2;
983 Objs_End
:= Linker_Objects
.Last
;
985 -- Continue to compute the Link_Bytes, the linker options are part of
986 -- command line length.
990 while Next_Line
(Nfirst
.. Nlast
) /= End_Info
loop
991 Link_Bytes
:= Link_Bytes
+ Nlast
- Nfirst
+ 2;
995 Rollback_File_Context
;
997 -- On systems that have limitations on handling very long linker lines
998 -- we make use of the system linker option which takes a list of object
999 -- file names from a file instead of the command line itself. What we do
1000 -- is to replace the list of object files by the special linker option
1001 -- which then reads the object file list from a file instead. The option
1002 -- to read from a file instead of the command line is only triggered if
1003 -- a conservative threshold is passed.
1005 if Object_List_File_Required
1006 or else (Object_List_File_Supported
1007 and then Link_Bytes
> Link_Max
)
1009 -- Create a temporary file containing the Ada user object files
1010 -- needed by the link. This list is taken from the bind file and is
1011 -- output one object per line for maximal compatibility with linkers
1012 -- supporting this option.
1014 Create_Temp_File
(Tname_FD
, Tname
);
1016 -- ??? File descriptor should be checked to not be Invalid_FD.
1017 -- Status of Write and Close operations should be checked, and
1018 -- failure should occur if a status is wrong.
1020 for J
in Objs_Begin
.. Objs_End
loop
1021 Write_RF
(Linker_Objects
.Table
(J
).all);
1023 Response_File_Objects
.Increment_Last
;
1024 Response_File_Objects
.Table
(Response_File_Objects
.Last
) :=
1025 Linker_Objects
.Table
(J
);
1028 Close
(Tname_FD
, Closing_Status
);
1030 -- Add the special objects list file option together with the name
1031 -- of the temporary file (removing the null character) to the objects
1034 Linker_Objects
.Table
(Objs_Begin
) :=
1035 new String'(Object_File_Option &
1036 Tname (Tname'First .. Tname'Last - 1));
1038 -- The slots containing these object file names are then removed
1039 -- from the objects table so they do not appear in the link. They are
1040 -- removed by moving up the linker options and non-Ada object files
1041 -- appearing after the Ada object list in the table.
1047 N := Objs_End - Objs_Begin + 1;
1049 for J in Objs_End + 1 .. Linker_Objects.Last loop
1050 Linker_Objects.Table (J - N + 1) := Linker_Objects.Table (J);
1053 Linker_Objects.Set_Last (Linker_Objects.Last - N + 1);
1057 -- Process switches and options
1059 if Next_Line (Nfirst .. Nlast) /= End_Info then
1060 Xlinker_Was_Previous := False;
1063 if Xlinker_Was_Previous
1064 or else Next_Line (Nfirst .. Nlast) = "-Xlinker"
1066 Linker_Options.Increment_Last;
1067 Linker_Options.Table (Linker_Options.Last) :=
1068 new String'(Next_Line
(Nfirst
.. Nlast
));
1070 elsif Next_Line
(Nfirst
.. Nlast
) = "-static" then
1071 GNAT_Static
:= True;
1073 elsif Next_Line
(Nfirst
.. Nlast
) = "-shared" then
1074 GNAT_Shared
:= True;
1076 -- Add binder options only if not already set on the command line.
1077 -- This rule is a way to control the linker options order.
1080 if Nlast
> Nfirst
+ 2 and then
1081 Next_Line
(Nfirst
.. Nfirst
+ 1) = "-L"
1083 -- Construct a library search path for use later to locate
1084 -- static gnatlib libraries.
1086 if Libpath
.Last
> 1 then
1087 Libpath
.Increment_Last
;
1088 Libpath
.Table
(Libpath
.Last
) := Path_Separator
;
1091 for I
in Nfirst
+ 2 .. Nlast
loop
1092 Libpath
.Increment_Last
;
1093 Libpath
.Table
(Libpath
.Last
) := Next_Line
(I
);
1096 Linker_Options
.Increment_Last
;
1098 Linker_Options
.Table
(Linker_Options
.Last
) :=
1099 new String'(Next_Line (Nfirst .. Nlast));
1101 elsif Next_Line (Nfirst .. Nlast) = "-lgnarl"
1102 or else Next_Line (Nfirst .. Nlast) = "-lgnat"
1105 (1 .. Natural'Min (Nlast, 8 + Library_Version'Length)) =
1106 Shared_Lib ("gnarl")
1109 (1 .. Natural'Min (Nlast, 7 + Library_Version'Length)) =
1112 -- If it is a shared library, remove the library version.
1113 -- We will be looking for the static version of the library
1114 -- as it is in the same directory as the shared version.
1116 if Nlast >= Library_Version'Length
1118 Next_Line (Nlast - Library_Version'Length + 1 .. Nlast) =
1121 -- Set Last to point to last character before the
1124 Last := Nlast - Library_Version'Length - 1;
1130 (Next_Line => Next_Line,
1134 GNAT_Static => GNAT_Static,
1135 GNAT_Shared => GNAT_Shared);
1138 Linker_Options.Increment_Last;
1139 Linker_Options.Table (Linker_Options.Last) :=
1140 new String'(Next_Line
(Nfirst
.. Nlast
));
1144 Xlinker_Was_Previous
:= Next_Line
(Nfirst
.. Nlast
) = "-Xlinker";
1147 exit when Next_Line
(Nfirst
.. Nlast
) = End_Info
;
1149 Next_Line
(Nfirst
.. Nlast
- 8) := Next_Line
(Nfirst
+ 8 .. Nlast
);
1154 -- If -shared was specified, invoke gcc with -shared-libgcc
1157 Linker_Options
.Increment_Last
;
1158 Linker_Options
.Table
(Linker_Options
.Last
) := Shared_Libgcc
;
1161 Status
:= fclose
(Fd
);
1162 end Process_Binder_File
;
1164 -------------------------
1165 -- Search_Library_Path --
1166 -------------------------
1168 procedure Search_Library_Path
1169 (Next_Line
: String;
1173 GNAT_Static
: Boolean;
1174 GNAT_Shared
: Boolean)
1176 File_Path
: String_Access
;
1178 Object_Lib_Extension
: constant String :=
1179 Value
(Object_Library_Ext_Ptr
);
1181 File_Name
: constant String := "lib" &
1182 Next_Line
(Nfirst
+ 2 .. Last
) & Object_Lib_Extension
;
1184 Run_Path_Opt
: constant String :=
1185 Value
(Run_Path_Option_Ptr
);
1187 GCC_Index
: Natural;
1188 Run_Path_Opt_Index
: Natural := 0;
1192 Locate_Regular_File
(File_Name
,
1193 String (Libpath
.Table
(1 .. Libpath
.Last
)));
1195 if File_Path
/= null then
1198 -- If static gnatlib found, explicitly specify to overcome
1199 -- possible linker default usage of shared version.
1201 Linker_Options
.Increment_Last
;
1203 Linker_Options
.Table
(Linker_Options
.Last
) :=
1204 new String'(File_Path.all);
1206 elsif GNAT_Shared then
1207 if Opt.Run_Path_Option then
1209 -- If shared gnatlib desired, add appropriate system specific
1210 -- switch so that it can be located at runtime.
1212 if Run_Path_Opt'Length /= 0 then
1214 -- Output the system specific linker command that allows the
1215 -- image activator to find the shared library at
1216 -- runtime. Also add path to find libgcc_s.so, if relevant.
1219 Path : String (1 .. File_Path'Length + 15);
1221 Path_Last : constant Natural := File_Path'Length;
1224 Path (1 .. File_Path'Length) := File_Path.all;
1226 -- To find the location of the shared version of libgcc, we
1227 -- look for "gcc-lib" in the path of the library. However,
1228 -- this subdirectory is no longer present in recent versions
1229 -- of GCC. So, we look for the last subdirectory "lib" in
1232 GCC_Index := Index (Path (1 .. Path_Last), "gcc-lib");
1234 if GCC_Index /= 0 then
1236 -- The shared version of libgcc is located in the
1237 -- parent directory.
1239 GCC_Index := GCC_Index - 1;
1242 GCC_Index := Index (Path (1 .. Path_Last), "/lib/");
1244 if GCC_Index = 0 then
1246 Index (Path (1 .. Path_Last),
1247 Directory_Separator & "lib"
1248 & Directory_Separator);
1251 -- If we have found a "lib" subdir in the path to
1252 -- libgnat, the possible shared libgcc of interest by
1253 -- default is in libgcc_subdir at the same level.
1255 if GCC_Index /= 0 then
1257 Subdir : constant String :=
1258 Value (Libgcc_Subdir_Ptr);
1261 Path (GCC_Index + 1 .. GCC_Index + Subdir'Length)
1263 GCC_Index := GCC_Index + Subdir'Length;
1268 -- Look for an eventual run_path_option in
1269 -- the linker switches.
1271 if Separate_Run_Path_Options then
1272 Linker_Options.Increment_Last;
1273 Linker_Options.Table
1274 (Linker_Options.Last) :=
1278 (1 .. File_Path
'Length
1279 - File_Name
'Length));
1281 if GCC_Index
/= 0 then
1282 Linker_Options
.Increment_Last
;
1283 Linker_Options
.Table
(Linker_Options
.Last
) :=
1286 & Path (1 .. GCC_Index));
1290 for J in reverse 1 .. Linker_Options.Last loop
1291 if Linker_Options.Table (J) /= null
1293 Linker_Options.Table (J)'Length
1294 > Run_Path_Opt'Length
1296 Linker_Options.Table (J)
1297 (1 .. Run_Path_Opt'Length) =
1300 -- We have found an already specified
1301 -- run_path_option: we will add to this switch,
1302 -- because only one run_path_option should be
1305 Run_Path_Opt_Index := J;
1310 -- If there is no run_path_option, we need to add one.
1312 if Run_Path_Opt_Index = 0 then
1313 Linker_Options.Increment_Last;
1316 if GCC_Index = 0 then
1317 if Run_Path_Opt_Index = 0 then
1318 Linker_Options.Table
1319 (Linker_Options.Last) :=
1323 (1 .. File_Path
'Length
1324 - File_Name
'Length));
1327 Linker_Options
.Table
1328 (Run_Path_Opt_Index
) :=
1330 (Linker_Options.Table
1331 (Run_Path_Opt_Index).all
1334 (1 .. File_Path'Length
1335 - File_Name'Length));
1339 if Run_Path_Opt_Index = 0 then
1340 Linker_Options.Table
1341 (Linker_Options.Last) :=
1345 (1 .. File_Path
'Length
1348 & Path
(1 .. GCC_Index
));
1351 Linker_Options
.Table
1352 (Run_Path_Opt_Index
) :=
1354 (Linker_Options.Table
1355 (Run_Path_Opt_Index).all
1358 (1 .. File_Path'Length
1361 & Path (1 .. GCC_Index));
1369 -- Then we add the appropriate -l switch
1371 Linker_Options.Increment_Last;
1372 Linker_Options.Table (Linker_Options.Last) :=
1373 new String'(Next_Line
(Nfirst
.. Nlast
));
1377 -- If gnatlib library not found, then add it anyway in
1378 -- case some other mechanism may find it.
1380 Linker_Options
.Increment_Last
;
1381 Linker_Options
.Table
(Linker_Options
.Last
) :=
1382 new String'(Next_Line (Nfirst .. Nlast));
1384 end Search_Library_Path;
1392 Write_Str ("Usage: ");
1393 Write_Str (Base_Command_Name.all);
1394 Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]");
1397 Write_Line (" mainprog.ali the ALI file of the main program");
1400 Display_Usage_Version_And_Help;
1401 Write_Line (" -f Force object file list to be generated");
1402 Write_Line (" -g Compile binder source file with debug information");
1403 Write_Line (" -n Do not compile the binder source file");
1404 Write_Line (" -P Process files for use by CodePeer");
1405 Write_Line (" -R Do not use a run_path_option");
1406 Write_Line (" -v Verbose mode");
1407 Write_Line (" -v -v Very verbose mode");
1409 Write_Line (" -o nam Use 'nam
' as the name of the executable");
1410 Write_Line (" -Bdir Load compiler executables from dir");
1412 if Is_Supported (Map_File) then
1413 Write_Line (" -Mmap Create map file map");
1414 Write_Line (" -M Create map file mainprog.map");
1417 Write_Line (" --GCC=comp Use 'comp
' as the compiler rather than 'gcc
'");
1418 Write_Line (" --LINK=lnk Use 'lnk
' as the linker rather than 'gcc
'");
1420 Write_Line (" [non-Ada-objects] list of non Ada object files");
1421 Write_Line (" [linker-options] other options for the linker");
1428 procedure Write_Header is
1430 if Verbose_Mode then
1432 Display_Version ("GNATLINK", "1995");
1440 procedure Write_Usage is
1446 -- Start of processing for Gnatlink
1449 -- Add the directory where gnatlink is invoked in front of the path, if
1450 -- gnatlink is invoked with directory information.
1453 Command : constant String := Command_Name;
1455 for Index in reverse Command'Range loop
1456 if Command (Index) = Directory_Separator then
1458 Absolute_Dir : constant String :=
1460 (Command (Command'First .. Index));
1462 PATH : constant String :=
1465 Getenv ("PATH").all;
1468 Setenv ("PATH", PATH);
1476 Base_Command_Name := new String'(Base_Name
(Command_Name
));
1479 if Argument_Count
= 0
1480 or else (Verbose_Mode
and then Argument_Count
= 1)
1483 Exit_Program
(E_Fatal
);
1486 -- Initialize packages to be used
1491 -- We always compile with -c
1493 Binder_Options_From_ALI
.Increment_Last
;
1494 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1497 if Ali_File_Name = null then
1498 Exit_With_Error ("no ali file given for link");
1501 if not Is_Regular_File (Ali_File_Name.all) then
1502 Exit_With_Error (Ali_File_Name.all & " not found");
1505 -- Read the ALI file of the main subprogram if the binder generated file
1506 -- needs to be compiled and no --GCC= switch has been specified. Fetch the
1507 -- back end switches from this ALI file and use these switches to compile
1508 -- the binder generated file
1510 if Compile_Bind_File and then Standard_Gcc then
1512 Name_Len := Ali_File_Name'Length;
1513 Name_Buffer (1 .. Name_Len) := Ali_File_Name.all;
1517 F : constant File_Name_Type := Name_Find;
1518 T : Text_Buffer_Ptr;
1522 -- Load the ALI file
1524 T := Read_Library_Info (F, True);
1526 -- Read it. Note that we ignore errors, since we only want very
1527 -- limited information from the ali file, and likely a slightly
1528 -- wrong version will be just fine, though in normal operation
1529 -- we don't expect this to happen.
1535 Ignore_Errors => True);
1537 if A /= No_ALI_Id then
1539 Index in Units.Table (ALIs.Table (A).First_Unit).First_Arg ..
1540 Units.Table (ALIs.Table (A).First_Unit).Last_Arg
1542 -- Do not compile with the front end switches. However, --RTS
1543 -- is to be dealt with specially because it needs to be passed
1544 -- to compile the file generated by the binder.
1547 Arg : String_Ptr renames Args.Table (Index);
1549 if not Is_Front_End_Switch (Arg.all) then
1550 Binder_Options_From_ALI.Increment_Last;
1551 Binder_Options_From_ALI.Table
1552 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1554 -- GNAT doesn't support GCC's multilib mechanism when it
1555 -- is configured with --disable-libada. This means that,
1556 -- when a multilib switch is used to request a particular
1557 -- compilation mode, the corresponding --RTS switch must
1558 -- also be specified. It is convenient to eliminate the
1559 -- redundancy by keying the compilation mode on a single
1560 -- switch, namely --RTS, and have the compiler reinstate
1561 -- the multilib switch (see gcc-interface/lang-specs.h).
1562 -- This switch must be passed to the driver at link time.
1565 and then Arg (Arg'First + 1 .. Arg'First + 4) = "mrtp"
1567 Linker_Options.Increment_Last;
1568 Linker_Options.Table
1569 (Linker_Options.Last) := String_Access (Arg);
1572 elsif Arg'Length > 5
1573 and then Arg (Arg'First + 2 .. Arg'First + 5) = "RTS="
1575 Binder_Options_From_ALI.Increment_Last;
1576 Binder_Options_From_ALI.Table
1577 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1579 -- Set the RTS_*_Path_Name variables, so that
1580 -- the correct directories will be set when
1581 -- Osint.Add_Default_Search_Dirs will be called later.
1583 Opt.RTS_Src_Path_Name :=
1585 (Arg (Arg'First + 6 .. Arg'Last), Include);
1587 Opt.RTS_Lib_Path_Name :=
1589 (Arg (Arg'First + 6 .. Arg'Last), Objects);
1597 -- Get target parameters
1599 Osint.Add_Default_Search_Dirs;
1600 Targparm.Get_Target_Parameters;
1602 -- Compile the bind file with the following switches:
1604 -- -gnatA stops reading gnat.adc, since we don't know what
1605 -- pragmas would work, and we do not need it anyway.
1607 -- -gnatWb allows brackets coding for wide characters
1609 -- -gnatiw allows wide characters in identifiers. This is needed
1610 -- because bindgen uses brackets encoding for all upper
1611 -- half and wide characters in identifier names.
1613 -- In addition, in CodePeer mode compile with -x adascil -gnatcC
1615 Binder_Options_From_ALI.Increment_Last;
1616 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1617 new String'("-gnatA");
1618 Binder_Options_From_ALI
.Increment_Last
;
1619 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1620 new String'("-gnatWb");
1621 Binder_Options_From_ALI.Increment_Last;
1622 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1623 new String'("-gnatiw");
1625 if Opt
.CodePeer_Mode
then
1626 Binder_Options_From_ALI
.Increment_Last
;
1627 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1629 Binder_Options_From_ALI.Increment_Last;
1630 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1631 new String'("adascil");
1632 Binder_Options_From_ALI
.Increment_Last
;
1633 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1634 new String'("-gnatcC");
1637 -- Locate all the necessary programs and verify required files are present
1639 Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all);
1641 if Gcc_Path = null then
1642 Exit_With_Error ("Couldn't locate " & Gcc.all);
1645 if Linker_Path = null then
1646 Linker_Path := Gcc_Path;
1651 Target_Debuggable_Suffix := Get_Target_Debuggable_Suffix;
1653 -- If no output name specified, then use the base name of .ali file name
1655 if Output_File_Name = null then
1657 new String'(Base_Name
(Ali_File_Name
.all)
1658 & Target_Debuggable_Suffix
.all);
1661 Linker_Options
.Increment_Last
;
1662 Linker_Options
.Table
(Linker_Options
.Last
) := new String'("-o");
1664 Linker_Options.Increment_Last;
1665 Linker_Options.Table (Linker_Options.Last) :=
1666 new String'(Output_File_Name
.all);
1668 Check_Existing_Executable
(Output_File_Name
.all);
1670 -- Warn if main program is called "test", as that may be a built-in command
1671 -- on Unix. On non-Unix systems executables have a suffix, so the warning
1672 -- will not appear. However, do not warn in the case of a cross compiler.
1674 -- Assume this is a cross tool if the executable name is not gnatlink.
1675 -- Note that the executable name is also gnatlink on windows, but in that
1676 -- case the output file name will be test.exe rather than test.
1678 if Base_Command_Name
.all = "gnatlink"
1679 and then Output_File_Name
.all = "test"
1681 Error_Msg
("warning: executable name """ & Output_File_Name
.all
1682 & """ may conflict with shell command");
1685 -- Special warnings for worrisome file names on windows
1687 -- Recent versions of Windows by default cause privilege escalation if an
1688 -- executable file name contains substrings "install", "setup", "update"
1689 -- or "patch". A console application will typically fail to load as a
1690 -- result, so we should warn the user.
1692 Bad_File_Names_On_Windows
: declare
1693 FN
: String := Output_File_Name
.all;
1695 procedure Check_File_Name
(S
: String);
1696 -- Warn if file name has the substring S
1698 procedure Check_File_Name
(S
: String) is
1700 for J
in 1 .. FN
'Length - (S
'Length - 1) loop
1701 if FN
(J
.. J
+ (S
'Length - 1)) = S
then
1703 ("warning: executable file name """ & Output_File_Name
.all
1704 & """ contains substring """ & S
& '"');
1706 ("admin privileges may be required to run this file");
1709 end Check_File_Name
;
1711 -- Start of processing for Bad_File_Names_On_Windows
1714 for J
in FN
'Range loop
1715 FN
(J
) := Csets
.Fold_Lower
(FN
(J
));
1718 -- For now we detect Windows by its executable suffix of .exe
1720 if Target_Debuggable_Suffix
.all = ".exe" then
1721 Check_File_Name
("install");
1722 Check_File_Name
("setup");
1723 Check_File_Name
("update");
1724 Check_File_Name
("patch");
1726 end Bad_File_Names_On_Windows
;
1728 -- If -M switch was specified, add the switches to create the map file
1730 if Create_Map_File
then
1732 Map_Name
: constant String := Base_Name
(Ali_File_Name
.all) & ".map";
1733 Switches
: String_List_Access
;
1736 Convert
(Map_File
, Map_Name
, Switches
);
1738 if Switches
/= null then
1739 for J
in Switches
'Range loop
1740 Linker_Options
.Increment_Last
;
1741 Linker_Options
.Table
(Linker_Options
.Last
) := Switches
(J
);
1747 -- Perform consistency checks
1749 -- Transform the .ali file name into the binder output file name
1751 Make_Binder_File_Names
: declare
1752 Fname
: constant String := Base_Name
(Ali_File_Name
.all);
1753 Fname_Len
: Integer := Fname
'Length;
1755 Maximum_File_Name_Length
: constant Integer :=
1756 Get_Maximum_File_Name_Length
;
1758 Bind_File_Prefix
: Types
.String_Ptr
;
1759 -- Contains prefix used for bind files
1764 Bind_File_Prefix
:= new String'("b~");
1766 -- If the length of the binder file becomes too long due to
1767 -- the addition of the "b?" prefix, then truncate it.
1769 if Maximum_File_Name_Length > 0 then
1771 Maximum_File_Name_Length - Bind_File_Prefix.all'Length
1773 Fname_Len := Fname_Len - 1;
1778 Fnam : constant String :=
1779 Bind_File_Prefix.all &
1780 Fname (Fname'First .. Fname'First + Fname_Len - 1);
1783 Binder_Spec_Src_File := new String'(Fnam
& ".ads");
1784 Binder_Body_Src_File
:= new String'(Fnam & ".adb");
1785 Binder_Ali_File := new String'(Fnam
& ".ali");
1787 Binder_Obj_File
:= new String'(Fnam & Get_Target_Object_Suffix.all);
1790 if Fname_Len /= Fname'Length then
1791 Binder_Options.Increment_Last;
1792 Binder_Options.Table (Binder_Options.Last) := new String'("-o");
1793 Binder_Options
.Increment_Last
;
1794 Binder_Options
.Table
(Binder_Options
.Last
) := Binder_Obj_File
;
1796 end Make_Binder_File_Names
;
1798 Process_Binder_File
(Binder_Body_Src_File
.all & ASCII
.NUL
);
1800 -- Compile the binder file. This is fast, so we always do it, unless
1801 -- specifically told not to by the -n switch
1803 if Compile_Bind_File
then
1807 Args
: Argument_List
1808 (1 .. Binder_Options_From_ALI
.Last
+ Binder_Options
.Last
+ 1);
1811 for J
in 1 .. Binder_Options_From_ALI
.Last
loop
1812 Args
(J
) := Binder_Options_From_ALI
.Table
(J
);
1815 for J
in 1 .. Binder_Options
.Last
loop
1816 Args
(Binder_Options_From_ALI
.Last
+ J
) :=
1817 Binder_Options
.Table
(J
);
1820 -- Use the full path of the binder generated source, so that it is
1821 -- guaranteed that the debugger will find this source, even with
1825 new String'(Normalize_Pathname (Binder_Body_Src_File.all));
1827 if Verbose_Mode then
1828 Write_Str (Base_Name (Gcc_Path.all));
1830 for J in Args'Range loop
1832 Write_Str (Args (J).all);
1838 System.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
1841 Exit_Program (E_Fatal);
1846 -- In CodePeer mode, there's nothing left to do after the binder file has
1849 if Opt.CodePeer_Mode then
1850 if Tname_FD /= Invalid_FD then
1857 -- Now, actually link the program
1860 Num_Args : Natural :=
1861 (Linker_Options.Last - Linker_Options.First + 1) +
1862 (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) +
1863 (Linker_Objects.Last - Linker_Objects.First + 1);
1864 Stack_Op : Boolean := False;
1867 -- Remove duplicate stack size setting from the Linker_Options table.
1868 -- The stack setting option "-Xlinker --stack=R,C" can be found
1869 -- in one line when set by a pragma Linker_Options or in two lines
1870 -- ("-Xlinker" then "--stack=R,C") when set on the command line. We
1871 -- also check for the "-Wl,--stack=R" style option.
1873 -- We must remove the second stack setting option instance because
1874 -- the one on the command line will always be the first one. And any
1875 -- subsequent stack setting option will overwrite the previous one.
1876 -- This is done especially for GNAT/NT where we set the stack size
1877 -- for tasking programs by a pragma in the NT specific tasking
1878 -- package System.Task_Primitives.Operations.
1880 -- Note: This is not a FOR loop that runs from Linker_Options.First
1881 -- to Linker_Options.Last, since operations within the loop can
1882 -- modify the length of the table.
1884 Clean_Link_Option_Set : declare
1886 Shared_Libgcc_Seen : Boolean := False;
1887 Static_Libgcc_Seen : Boolean := False;
1890 J := Linker_Options.First;
1891 while J <= Linker_Options.Last loop
1892 if Linker_Options.Table (J).all = "-Xlinker"
1893 and then J < Linker_Options.Last
1894 and then Linker_Options.Table (J + 1)'Length > 8
1895 and then Linker_Options.Table (J + 1) (1 .. 8) = "--stack="
1898 Linker_Options.Table (J .. Linker_Options.Last - 2) :=
1899 Linker_Options.Table (J + 2 .. Linker_Options.Last);
1900 Linker_Options.Decrement_Last;
1901 Linker_Options.Decrement_Last;
1902 Num_Args := Num_Args - 2;
1909 -- Remove duplicate -shared-libgcc switches
1911 if Linker_Options.Table (J).all = Shared_Libgcc_String then
1912 if Shared_Libgcc_Seen then
1913 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1914 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1915 Linker_Options.Decrement_Last;
1916 Num_Args := Num_Args - 1;
1919 Shared_Libgcc_Seen := True;
1923 -- Remove duplicate -static-libgcc switches
1925 if Linker_Options.Table (J).all = Static_Libgcc_String then
1926 if Static_Libgcc_Seen then
1927 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1928 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1929 Linker_Options.Decrement_Last;
1930 Num_Args := Num_Args - 1;
1933 Static_Libgcc_Seen := True;
1937 -- Here we just check for a canonical form that matches the
1938 -- pragma Linker_Options set in the NT runtime.
1940 if (Linker_Options.Table (J)'Length > 17
1941 and then Linker_Options.Table (J) (1 .. 17) =
1942 "-Xlinker --stack=")
1944 (Linker_Options.Table (J)'Length > 12
1945 and then Linker_Options.Table (J) (1 .. 12) =
1949 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1950 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1951 Linker_Options.Decrement_Last;
1952 Num_Args := Num_Args - 1;
1962 if Linker_Path = Gcc_Path then
1964 -- For systems where the default is to link statically with
1965 -- libgcc, if gcc is not called with -shared-libgcc, call it
1966 -- with -static-libgcc, as there are some platforms where one
1967 -- of these two switches is compulsory to link.
1968 -- Don't push extra switches if we already saw one.
1970 if Shared_Libgcc_Default = 'T
'
1971 and then not Shared_Libgcc_Seen
1972 and then not Static_Libgcc_Seen
1974 Linker_Options.Increment_Last;
1975 Linker_Options.Table (Linker_Options.Last) := Static_Libgcc;
1976 Num_Args := Num_Args + 1;
1979 -- Likewise, the reverse.
1981 if Shared_Libgcc_Default = 'H
'
1982 and then not Static_Libgcc_Seen
1983 and then not Shared_Libgcc_Seen
1985 Linker_Options.Increment_Last;
1986 Linker_Options.Table (Linker_Options.Last) := Shared_Libgcc;
1987 Num_Args := Num_Args + 1;
1990 end Clean_Link_Option_Set;
1992 -- Prepare arguments for call to linker
1994 Call_Linker : declare
1996 Args : Argument_List (1 .. Num_Args + 1);
1997 Index : Integer := Args'First;
2000 Args (Index) := Binder_Obj_File;
2002 -- Add the object files and any -largs libraries
2004 for J in Linker_Objects.First .. Linker_Objects.Last loop
2006 Args (Index) := Linker_Objects.Table (J);
2009 -- Add the linker options from the binder file
2011 for J in Linker_Options.First .. Linker_Options.Last loop
2013 Args (Index) := Linker_Options.Table (J);
2016 -- Finally add the libraries from the --GCC= switch
2018 for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop
2020 Args (Index) := Gcc_Linker_Options.Table (J);
2023 if Verbose_Mode then
2024 Write_Str (Linker_Path.all);
2026 for J in Args'Range loop
2028 Write_Str (Args (J).all);
2033 -- If we are on very verbose mode (-v -v) and a response file
2034 -- is used we display its content.
2036 if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then
2038 Write_Str ("Response file (" &
2039 Tname (Tname'First .. Tname'Last - 1) &
2044 Response_File_Objects.First .. Response_File_Objects.Last
2046 Write_Str (Response_File_Objects.Table (J).all);
2054 System.OS_Lib.Spawn (Linker_Path.all, Args, Success);
2056 -- Delete the temporary file used in conjunction with linking if one
2057 -- was created. See Process_Bind_File for details.
2059 if Tname_FD /= Invalid_FD then
2064 Error_Msg ("error when calling " & Linker_Path.all);
2065 Exit_Program (E_Fatal);
2070 -- Only keep the binder output file and it's associated object
2071 -- file if compiling with the -g option. These files are only
2072 -- useful if debugging.
2074 if not Debug_Flag_Present then
2075 Delete (Binder_Ali_File.all & ASCII.NUL);
2076 Delete (Binder_Spec_Src_File.all & ASCII.NUL);
2077 Delete (Binder_Body_Src_File.all & ASCII.NUL);
2078 Delete (Binder_Obj_File.all & ASCII.NUL);
2081 Exit_Program (E_Success);
2085 Write_Line (Exception_Information (X));
2086 Exit_With_Error ("INTERNAL ERROR. Please report");