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+/****************************************************************************
+ * *
+ * GNAT COMPILER COMPONENTS *
+ * *
+ * L I N K *
+ * *
+ * $Revision: 1.1 $
+ * *
+ * C Implementation File *
+ * *
+ * Copyright (C) 1992-2001, 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. *
+ * It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). *
+ * *
+ ****************************************************************************/
+
+/* 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 = SHARED;
+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;
+cnonst 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 = SHARED;
+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 (linux)
+const char *object_file_option = "";
+const char *run_path_option = "-Wl,-rpath,";
+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 (__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