| /**************************************************************************** |
| * * |
| * GNAT COMPILER COMPONENTS * |
| * * |
| * L I N K * |
| * * |
| * C Implementation File * |
| * * |
| * Copyright (C) 1992-2004, Free Software Foundation, Inc. * |
| * * |
| * GNAT is free software; you can redistribute it and/or modify it under * |
| * terms of the GNU General Public License as published by the Free Soft- * |
| * ware Foundation; either version 2, or (at your option) any later ver- * |
| * sion. GNAT is distributed in the hope that it will be useful, but WITH- * |
| * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * |
| * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * |
| * for more details. You should have received a copy of the GNU General * |
| * Public License distributed with GNAT; see file COPYING. If not, write * |
| * to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, * |
| * MA 02111-1307, USA. * |
| * * |
| * As a special exception, if you link this file with other files to * |
| * produce an executable, this file does not by itself cause the resulting * |
| * executable to be covered by the GNU General Public License. This except- * |
| * ion does not however invalidate any other reasons why the executable * |
| * file might be covered by the GNU Public License. * |
| * * |
| * GNAT was originally developed by the GNAT team at New York University. * |
| * Extensive contributions were provided by Ada Core Technologies Inc. * |
| * * |
| ****************************************************************************/ |
| |
| /* This file contains parameterizations used by gnatlink.adb in handling */ |
| /* very long linker lines in systems where there are limitations on the */ |
| /* argument length when the command line is used to pass items to the */ |
| /* linker */ |
| |
| #include <string.h> |
| |
| /* objlist_file_supported is set to 1 when the system linker allows */ |
| /* response file, that is a file that contains the list of object files. */ |
| /* This is useful on systems where the command line length is limited, */ |
| /* meaning that putting all the object files on the command line can */ |
| /* result in an unacceptable limit on the number of files. */ |
| |
| /* object_file_option denotes the system dependent linker option which */ |
| /* allows object file names to be placed in a file and then passed to */ |
| /* the linker. object_file_option must be set if objlist_file_supported */ |
| /* is set to 1. */ |
| |
| /* link_max is a conservative system specific threshold (in bytes) of the */ |
| /* argument length passed to the linker which will trigger a file being */ |
| /* used instead of the command line directly. If the argument length is */ |
| /* greater than this threshhold, then an objlist_file will be generated */ |
| /* and object_file_option and objlist_file_supported must be set. If */ |
| /* objlist_file_supported is set to 0 (unsupported), then link_max is */ |
| /* set to 2**31-1 so that the limit will never be exceeded. */ |
| |
| /* run_path_option is the system dependent linker option which specifies */ |
| /* the run time path to use when loading dynamic libraries. This should */ |
| /* be set to the null string if the system does not support dynmamic */ |
| /* loading of libraries. */ |
| |
| /* shared_libgnat_default gives the system dependent link method that */ |
| /* be used by default for linking libgnat (shared or static) */ |
| |
| /* using_gnu_linker is set to 1 when the GNU linker is used under this */ |
| /* target. */ |
| |
| /* RESPONSE FILE & GNU LINKER */ |
| /* -------------------------- */ |
| /* objlist_file_supported and using_gnu_link used together tell gnatlink */ |
| /* to generate a GNU style response file. Note that object_file_option */ |
| /* must be set to "" in this case, since no option is required for a */ |
| /* response file to be passed to GNU ld. With a GNU linker we use the */ |
| /* linker script to implement the response file feature. Any file passed */ |
| /* in the GNU ld command line with an unknown extension is supposed to be */ |
| /* a linker script. Each linker script augment the current configuration. */ |
| /* The format of such response file is as follow : */ |
| /* INPUT (obj1.p obj2.o ...) */ |
| |
| #define SHARED 'H' |
| #define STATIC 'T' |
| |
| #if defined (__osf__) |
| const char *object_file_option = "-Wl,-input,"; |
| const char *run_path_option = "-Wl,-rpath,"; |
| int link_max = 10000; |
| unsigned char objlist_file_supported = 1; |
| char shared_libgnat_default = STATIC; |
| unsigned char using_gnu_linker = 0; |
| const char *object_library_extension = ".a"; |
| |
| #elif defined (sgi) |
| const char *object_file_option = "-Wl,-objectlist,"; |
| const char *run_path_option = "-Wl,-rpath,"; |
| int link_max = 5000; |
| unsigned char objlist_file_supported = 1; |
| char shared_libgnat_default = STATIC; |
| unsigned char using_gnu_linker = 0; |
| const char *object_library_extension = ".a"; |
| |
| #elif defined (__WIN32) |
| const char *object_file_option = ""; |
| const char *run_path_option = ""; |
| int link_max = 30000; |
| unsigned char objlist_file_supported = 1; |
| char shared_libgnat_default = STATIC; |
| unsigned char using_gnu_linker = 1; |
| const char *object_library_extension = ".a"; |
| |
| #elif defined (__INTERIX) |
| const char *object_file_option = ""; |
| const char *run_path_option = ""; |
| int link_max = 5000; |
| unsigned char objlist_file_supported = 1; |
| char shared_libgnat_default = STATIC; |
| unsigned char using_gnu_linker = 1; |
| const char *object_library_extension = ".a"; |
| |
| #elif defined (hpux) |
| const char *object_file_option = "-Wl,-c,"; |
| const char *run_path_option = "-Wl,+b,"; |
| int link_max = 5000; |
| unsigned char objlist_file_supported = 1; |
| char shared_libgnat_default = STATIC; |
| unsigned char using_gnu_linker = 0; |
| const char *object_library_extension = ".a"; |
| |
| #elif defined (_AIX) |
| const char *object_file_option = "-Wl,-f,"; |
| const char *run_path_option = ""; |
| int link_max = 15000; |
| const unsigned char objlist_file_supported = 1; |
| char shared_libgnat_default = STATIC; |
| unsigned char using_gnu_linker = 0; |
| const char *object_library_extension = ".a"; |
| |
| #elif defined (VMS) |
| const char *object_file_option = ""; |
| const char *run_path_option = ""; |
| char shared_libgnat_default = STATIC; |
| int link_max = 2147483647; |
| unsigned char objlist_file_supported = 0; |
| unsigned char using_gnu_linker = 0; |
| const char *object_library_extension = ".olb"; |
| |
| #elif defined (sun) |
| const char *object_file_option = ""; |
| const char *run_path_option = "-R"; |
| char shared_libgnat_default = STATIC; |
| int link_max = 2147483647; |
| unsigned char objlist_file_supported = 0; |
| unsigned char using_gnu_linker = 0; |
| const char *object_library_extension = ".a"; |
| |
| #elif defined (__FreeBSD__) |
| char *object_file_option = ""; |
| char *run_path_option = ""; |
| char shared_libgnat_default = STATIC; |
| int link_max = 2147483647; |
| unsigned char objlist_file_supported = 0; |
| unsigned char using_gnu_linker = 0; |
| char *object_library_extension = ".a"; |
| |
| #elif defined (linux) |
| const char *object_file_option = ""; |
| const char *run_path_option = "-Wl,-rpath,"; |
| char shared_libgnat_default = STATIC; |
| int link_max = 8192; |
| unsigned char objlist_file_supported = 1; |
| unsigned char using_gnu_linker = 1; |
| const char *object_library_extension = ".a"; |
| |
| #elif defined (__svr4__) && defined (i386) |
| const char *object_file_option = ""; |
| const char *run_path_option = ""; |
| char shared_libgnat_default = STATIC; |
| int link_max = 2147483647; |
| unsigned char objlist_file_supported = 0; |
| unsigned char using_gnu_linker = 0; |
| const char *object_library_extension = ".a"; |
| |
| #else |
| |
| /* These are the default settings for all other systems. No response file |
| is supported, the shared library default is STATIC. */ |
| const char *run_path_option = ""; |
| const char *object_file_option = ""; |
| char shared_libgnat_default = STATIC; |
| int link_max = 2147483647; |
| unsigned char objlist_file_supported = 0; |
| unsigned char using_gnu_linker = 0; |
| const char *object_library_extension = ".a"; |
| #endif |
