1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- M L I B . T G T . S P E C I F I C --
6 -- (Alpha VMS Version) --
10 -- Copyright (C) 2003-2010, Free Software Foundation, Inc. --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 3, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
20 -- http://www.gnu.org/licenses for a complete copy of the license. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
25 ------------------------------------------------------------------------------
27 -- This is the Alpha VMS version of the body
29 with Ada.Characters.Handling; use Ada.Characters.Handling;
34 with MLib.Tgt.VMS_Common; use MLib.Tgt.VMS_Common;
37 with Output; use Output;
39 with GNAT.Directory_Operations; use GNAT.Directory_Operations;
41 with System; use System;
42 with System.Case_Util; use System.Case_Util;
43 with System.CRTL; use System.CRTL;
45 package body MLib.Tgt.Specific is
47 -- Non default subprogram. See comment in mlib-tgt.ads
49 procedure Build_Dynamic_Library
50 (Ofiles : Argument_List;
51 Options : Argument_List;
52 Interfaces : Argument_List;
53 Lib_Filename : String;
55 Symbol_Data : Symbol_Record;
56 Driver_Name : Name_Id := No_Name;
57 Lib_Version : String := "";
58 Auto_Init : Boolean := False);
62 Empty_Argument_List : aliased Argument_List := (1 .. 0 => null);
63 Additional_Objects : Argument_List_Access := Empty_Argument_List'Access;
64 -- Used to add the generated auto-init object files for auto-initializing
65 -- stand-alone libraries.
67 Macro_Name : constant String := "mcr gnu:[bin]gcc -c -x assembler";
68 -- The name of the command to invoke the macro-assembler
70 VMS_Options : Argument_List := (1 .. 1 => null);
72 Gnatsym_Name : constant String := "gnatsym";
74 Gnatsym_Path : String_Access;
76 Arguments : Argument_List_Access := null;
77 Last_Argument : Natural := 0;
79 Success : Boolean := False;
81 Shared_Libgcc : aliased String := "-shared-libgcc";
83 Shared_Libgcc_Switch : constant Argument_List :=
84 (1 => Shared_Libgcc'Access);
86 ---------------------------
87 -- Build_Dynamic_Library --
88 ---------------------------
90 procedure Build_Dynamic_Library
91 (Ofiles : Argument_List;
92 Options : Argument_List;
93 Interfaces : Argument_List;
94 Lib_Filename : String;
96 Symbol_Data : Symbol_Record;
97 Driver_Name : Name_Id := No_Name;
98 Lib_Version : String := "";
99 Auto_Init : Boolean := False)
102 Lib_File : constant String :=
103 Lib_Dir & Directory_Separator & "lib" &
104 Fil.Ext_To (Lib_Filename, DLL_Ext);
106 Opts : Argument_List := Options;
107 Last_Opt : Natural := Opts'Last;
108 Opts2 : Argument_List (Options'Range);
109 Last_Opt2 : Natural := Opts2'First - 1;
111 Inter : constant Argument_List := Interfaces;
113 function Is_Interface (Obj_File : String) return Boolean;
114 -- For a Stand-Alone Library, returns True if Obj_File is the object
115 -- file name of an interface of the SAL. For other libraries, always
118 function Option_File_Name return String;
119 -- Returns Symbol_File, if not empty. Otherwise, returns "symvec.opt"
121 function Version_String return String;
122 -- Returns Lib_Version if not empty and if Symbol_Data.Symbol_Policy is
123 -- not Autonomous, otherwise returns "". When Symbol_Data.Symbol_Policy
124 -- is Autonomous, fails gnatmake if Lib_Version is not the image of a
131 function Is_Interface (Obj_File : String) return Boolean is
132 ALI : constant String :=
134 (Filename => To_Lower (Base_Name (Obj_File)),
138 if Inter'Length = 0 then
141 elsif ALI'Length > 2 and then
142 ALI (ALI'First .. ALI'First + 2) = "b__"
147 for J in Inter'Range loop
148 if Inter (J).all = ALI then
157 ----------------------
158 -- Option_File_Name --
159 ----------------------
161 function Option_File_Name return String is
163 if Symbol_Data.Symbol_File = No_Path then
166 Get_Name_String (Symbol_Data.Symbol_File);
167 To_Lower (Name_Buffer (1 .. Name_Len));
168 return Name_Buffer (1 .. Name_Len);
170 end Option_File_Name;
176 function Version_String return String is
177 Version : Integer := 0;
181 or else Symbol_Data.Symbol_Policy /= Autonomous
187 Version := Integer'Value (Lib_Version);
190 raise Constraint_Error;
196 when Constraint_Error =>
197 Fail ("illegal version """
199 & """ (on VMS version must be a positive number)");
205 ---------------------
206 -- Local Variables --
207 ---------------------
209 Opt_File_Name : constant String := Option_File_Name;
210 Version : constant String := Version_String;
211 For_Linker_Opt : String_Access;
213 -- Start of processing for Build_Dynamic_Library
216 -- If option file name does not ends with ".opt", append "/OPTIONS"
217 -- to its specification for the VMS linker.
219 if Opt_File_Name'Length > 4
221 Opt_File_Name (Opt_File_Name'Last - 3 .. Opt_File_Name'Last) = ".opt"
223 For_Linker_Opt := new String'("--for-linker=" & Opt_File_Name);
226 new String'("--for-linker=" & Opt_File_Name & "/OPTIONS");
229 VMS_Options (VMS_Options'First) := For_Linker_Opt;
231 for J in Inter'Range loop
232 To_Lower (Inter (J).all);
235 -- "gnatsym" is necessary for building the option file
237 if Gnatsym_Path = null then
238 Gnatsym_Path := Locate_Exec_On_Path (Gnatsym_Name);
240 if Gnatsym_Path = null then
241 Fail (Gnatsym_Name & " not found in path");
245 -- For auto-initialization of a stand-alone library, we create
246 -- a macro-assembly file and we invoke the macro-assembler.
250 Macro_File_Name : constant String := Lib_Filename & "__init.asm";
251 Macro_File : File_Descriptor;
252 Init_Proc : constant String := Init_Proc_Name (Lib_Filename);
253 Popen_Result : System.Address;
254 Pclose_Result : Integer;
256 OK : Boolean := True;
258 command : constant String :=
259 Macro_Name & " " & Macro_File_Name & ASCII.NUL;
260 -- The command to invoke the assembler on the generated auto-init
263 mode : constant String := "r" & ASCII.NUL;
264 -- The mode for the invocation of Popen
268 Write_Str ("Creating auto-init assembly file """);
269 Write_Str (Macro_File_Name);
273 -- Create and write the auto-init assembly file
278 -- Output a dummy transfer address for debugging
279 -- followed by the LIB$INITIALIZE section.
281 Lines : constant String :=
283 HT & ".align 4" & LF &
284 HT & ".globl __main" & LF &
285 HT & ".ent __main" & LF &
287 HT & ".base $27" & LF &
288 HT & ".frame $29,0,$26,8" & LF &
289 HT & "ret $31,($26),1" & LF &
292 HT & ".pdesc __main..en,null" & LF &
293 HT & ".end __main" & LF & LF &
294 HT & ".section LIB$INITIALIZE,GBL,NOWRT" & LF &
295 HT & ".long " & Init_Proc & LF;
298 Macro_File := Create_File (Macro_File_Name, Text);
299 OK := Macro_File /= Invalid_FD;
303 (Macro_File, Lines (Lines'First)'Address,
305 OK := Len = Lines'Length;
309 Close (Macro_File, OK);
313 Fail ("creation of auto-init assembly file """
319 -- Invoke the macro-assembler
322 Write_Str ("Assembling auto-init assembly file """);
323 Write_Str (Macro_File_Name);
327 Popen_Result := popen (command (command'First)'Address,
328 mode (mode'First)'Address);
330 if Popen_Result = Null_Address then
331 Fail ("assembly of auto-init assembly file """
336 -- Wait for the end of execution of the macro-assembler
338 Pclose_Result := pclose (Popen_Result);
340 if Pclose_Result < 0 then
341 Fail ("assembly of auto init assembly file """
346 -- Add the generated object file to the list of objects to be
347 -- included in the library.
349 Additional_Objects :=
351 (1 => new String'(Lib_Filename & "__init.obj"));
355 -- Allocate the argument list and put the symbol file name, the
356 -- reference (if any) and the policy (if not autonomous).
358 Arguments := new Argument_List (1 .. Ofiles'Length + 8);
365 Last_Argument := Last_Argument + 1;
366 Arguments (Last_Argument) := new String'("-v");
369 -- Version number (major ID)
371 if Lib_Version /= "" then
372 Last_Argument := Last_Argument + 1;
373 Arguments (Last_Argument) := new String'("-V");
374 Last_Argument := Last_Argument + 1;
375 Arguments (Last_Argument) := new String'(Version);
380 Last_Argument := Last_Argument + 1;
381 Arguments (Last_Argument) := new String'("-s");
382 Last_Argument := Last_Argument + 1;
383 Arguments (Last_Argument) := new String'(Opt_File_Name);
385 -- Reference Symbol File
387 if Symbol_Data.Reference /= No_Path then
388 Last_Argument := Last_Argument + 1;
389 Arguments (Last_Argument) := new String'("-r");
390 Last_Argument := Last_Argument + 1;
391 Arguments (Last_Argument) :=
392 new String'(Get_Name_String (Symbol_Data.Reference));
397 case Symbol_Data.Symbol_Policy is
402 Last_Argument := Last_Argument + 1;
403 Arguments (Last_Argument) := new String'("-c");
406 Last_Argument := Last_Argument + 1;
407 Arguments (Last_Argument) := new String'("-C");
410 Last_Argument := Last_Argument + 1;
411 Arguments (Last_Argument) := new String'("-R");
414 Last_Argument := Last_Argument + 1;
415 Arguments (Last_Argument) := new String'("-D");
419 -- Add each relevant object file
421 for Index in Ofiles'Range loop
422 if Is_Interface (Ofiles (Index).all) then
423 Last_Argument := Last_Argument + 1;
424 Arguments (Last_Argument) := new String'(Ofiles (Index).all);
430 Spawn (Program_Name => Gnatsym_Path.all,
431 Args => Arguments (1 .. Last_Argument),
435 Fail ("unable to create symbol file for library """
442 -- Move all the -l switches from Opts to Opts2
445 Index : Natural := Opts'First;
449 while Index <= Last_Opt loop
452 if Opt'Length > 2 and then
453 Opt (Opt'First .. Opt'First + 1) = "-l"
455 if Index < Last_Opt then
456 Opts (Index .. Last_Opt - 1) :=
457 Opts (Index + 1 .. Last_Opt);
460 Last_Opt := Last_Opt - 1;
462 Last_Opt2 := Last_Opt2 + 1;
463 Opts2 (Last_Opt2) := Opt;
471 -- Invoke gcc to build the library
474 (Output_File => Lib_File,
475 Objects => Ofiles & Additional_Objects.all,
476 Options => VMS_Options,
477 Options_2 => Shared_Libgcc_Switch &
478 Opts (Opts'First .. Last_Opt) &
479 Opts2 (Opts2'First .. Last_Opt2),
480 Driver_Name => Driver_Name);
482 -- The auto-init object file need to be deleted, so that it will not
483 -- be included in the library as a regular object file, otherwise
484 -- it will be included twice when the library will be built next
485 -- time, which may lead to errors.
489 Auto_Init_Object_File_Name : constant String :=
490 Lib_Filename & "__init.obj";
495 Write_Str ("deleting auto-init object file """);
496 Write_Str (Auto_Init_Object_File_Name);
500 Delete_File (Auto_Init_Object_File_Name, Success => Disregard);
503 end Build_Dynamic_Library;
505 -- Package initialization
508 Build_Dynamic_Library_Ptr := Build_Dynamic_Library'Access;
509 end MLib.Tgt.Specific;