--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/link.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,232 @@
+/****************************************************************************
+ *                                                                          *
+ *                         GNAT COMPILER COMPONENTS                         *
+ *                                                                          *
+ *                                 L I N K                                  *
+ *                                                                          *
+ *                          C Implementation File                           *
+ *                                                                          *
+ *          Copyright (C) 1992-2017, 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 3,  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.                                     *
+ *                                                                          *
+ * As a special exception under Section 7 of GPL version 3, you are granted *
+ * additional permissions described in the GCC Runtime Library Exception,   *
+ * version 3.1, as published by the Free Software Foundation.               *
+ *                                                                          *
+ * You should have received a copy of the GNU General Public License and    *
+ * a copy of the GCC Runtime Library Exception along with this program;     *
+ * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *
+ * <http://www.gnu.org/licenses/>.                                          *
+ *                                                                          *
+ * GNAT was originally developed  by the GNAT team at  New York University. *
+ * Extensive contributions were provided by Ada Core Technologies Inc.      *
+ *                                                                          *
+ ****************************************************************************/
+
+/*  This file contains host-specific parameters describing the behavior of the
+    linker.  It is used by gnatlink as well as all tools that use Mlib.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef IN_GCC
+#include "auto-host.h"
+#endif
+
+#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 threshold, 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 dynamic        */
+/*  loading of libraries.                                                   */
+
+/*  shared_libgnat_default gives the system dependent link method that      */
+/*  be used by default for linking libgnat (shared or static)               */
+
+/*  shared_libgcc_default gives the system dependent link method that       */
+/*  be used by default for linking libgcc (shared or static)                */
+
+/*  separate_run_path_options is set to 1 when separate "rpath" arguments   */
+/*  must be passed to the linker for each directory in the rpath.           */
+
+/*  default_libgcc_subdir is the subdirectory name (from the installation   */
+/*  root) where we may find a shared libgcc to use by default.              */
+
+#define SHARED 'H'
+#define STATIC 'T'
+
+#if defined (__WIN32)
+const char *__gnat_object_file_option = "-Wl,@";
+const char *__gnat_run_path_option = "";
+int __gnat_link_max = 30000;
+unsigned char __gnat_objlist_file_supported = 1;
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 0;
+const char *__gnat_default_libgcc_subdir = "lib";
+
+#elif defined (__hpux__)
+const char *__gnat_object_file_option = "-Wl,-c,";
+const char *__gnat_run_path_option = "-Wl,+b,";
+int __gnat_link_max = 5000;
+unsigned char __gnat_objlist_file_supported = 1;
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 0;
+const char *__gnat_default_libgcc_subdir = "lib";
+
+#elif defined (__FreeBSD__) || defined (__DragonFly__) \
+   || defined (__NetBSD__) || defined (__OpenBSD__)
+const char *__gnat_object_file_option = "-Wl,@";
+const char *__gnat_run_path_option = "-Wl,-rpath,";
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+int __gnat_link_max = 8192;
+unsigned char __gnat_objlist_file_supported = 1;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 0;
+const char *__gnat_default_libgcc_subdir = "lib";
+
+#elif defined (__APPLE__)
+const char *__gnat_object_file_option = "-Wl,-filelist,";
+const char *__gnat_run_path_option = "-Wl,-rpath,";
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = SHARED;
+int __gnat_link_max = 262144;
+unsigned char __gnat_objlist_file_supported = 1;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 1;
+const char *__gnat_default_libgcc_subdir = "lib";
+
+#elif defined (__linux__) || defined (__GLIBC__)
+const char *__gnat_object_file_option = "-Wl,@";
+const char *__gnat_run_path_option = "-Wl,-rpath,";
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+int __gnat_link_max = 8192;
+unsigned char __gnat_objlist_file_supported = 1;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 0;
+#if defined (__x86_64)
+# if defined (__LP64__)
+const char *__gnat_default_libgcc_subdir = "lib64";
+# else
+const char *__gnat_default_libgcc_subdir = "libx32";
+# endif
+#else
+const char *__gnat_default_libgcc_subdir = "lib";
+#endif
+
+#elif defined (_AIX)
+/* On AIX, even when with GNU ld we use native linker switches.  This is
+   particularly important for '-f' as it should be interpreted by collect2.  */
+
+const char *__gnat_object_file_option = "-Wl,-f,";
+const char *__gnat_run_path_option = "";
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+int __gnat_link_max = 15000;
+unsigned char __gnat_objlist_file_supported = 1;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 0;
+const char *__gnat_default_libgcc_subdir = "lib";
+
+#elif (HAVE_GNU_LD)
+/*  These are the settings for all systems that use gnu ld. GNU style response
+    file is supported, the shared library default is STATIC.  */
+
+const char *__gnat_object_file_option = "-Wl,@";
+const char *__gnat_run_path_option = "";
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+int __gnat_link_max = 8192;
+unsigned char __gnat_objlist_file_supported = 1;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 0;
+const char *__gnat_default_libgcc_subdir = "lib";
+
+#elif defined (VMS)
+const char *__gnat_object_file_option = "";
+const char *__gnat_run_path_option = "";
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+int __gnat_link_max = 2147483647;
+unsigned char __gnat_objlist_file_supported = 0;
+const char *__gnat_object_library_extension = ".olb";
+unsigned char __gnat_separate_run_path_options = 0;
+const char *__gnat_default_libgcc_subdir = "lib";
+
+#elif defined (__sun__)
+const char *__gnat_object_file_option = "";
+const char *__gnat_run_path_option = "-Wl,-R";
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+int __gnat_link_max = 2147483647;
+unsigned char __gnat_objlist_file_supported = 0;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 0;
+#if defined (__sparc_v9__) || defined (__sparcv9)
+const char *__gnat_default_libgcc_subdir = "lib/sparcv9";
+#elif defined (__x86_64)
+const char *__gnat_default_libgcc_subdir = "lib/amd64";
+#else
+const char *__gnat_default_libgcc_subdir = "lib";
+#endif
+
+#elif defined (__svr4__) && defined (__i386__)
+const char *__gnat_object_file_option = "";
+const char *__gnat_run_path_option = "";
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+int __gnat_link_max = 2147483647;
+unsigned char __gnat_objlist_file_supported = 0;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 0;
+const char *__gnat_default_libgcc_subdir = "lib";
+
+#else
+
+/*  These are the default settings for all other systems. No response file
+    is supported, the shared library default is STATIC.  */
+const char *__gnat_run_path_option = "";
+const char *__gnat_object_file_option = "";
+char __gnat_shared_libgnat_default = STATIC;
+char __gnat_shared_libgcc_default = STATIC;
+int __gnat_link_max = 2147483647;
+unsigned char __gnat_objlist_file_supported = 0;
+const char *__gnat_object_library_extension = ".a";
+unsigned char __gnat_separate_run_path_options = 0;
+const char *__gnat_default_libgcc_subdir = "lib";
+#endif
+
+#ifdef __cplusplus
+}
+#endif