include:

[pf3gnuchains/gcc-fork.git] / libiberty / make-relative-prefix.c

diff --git a/libiberty/make-relative-prefix.c b/libiberty/make-relative-prefix.c
index 3d40c5f..4116ec9 100644 (file)
--- a/libiberty/make-relative-prefix.c
+++ b/libiberty/make-relative-prefix.c
@@ -1,6 +1,6 @@
 /* Relative (relocatable) prefix support.
    Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2006 Free Software Foundation, Inc.
 
 This file is part of libiberty.
 
@@ -16,8 +16,8 @@ for more details.
 
 You should have received a copy of the GNU General Public License
 along with GCC; see the file COPYING.  If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.  */
+Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+02110-1301, USA.  */
 
 /*
 
@@ -102,7 +102,7 @@ static void free_split_directories (char **);
 static char *
 save_string (const char *s, int len)
 {
-  char *result = malloc (len + 1);
+  char *result = (char *) malloc (len + 1);
 
   memcpy (result, s, len);
   result[len] = 0;
@@ -217,9 +217,9 @@ free_split_directories (char **dirs)
 
    If no relative prefix can be found, return NULL.  */
 
-char *
-make_relative_prefix (const char *progname,
-                      const char *bin_prefix, const char *prefix)
+static char *
+make_relative_prefix_1 (const char *progname, const char *bin_prefix,
+                       const char *prefix, const int resolve_links)
 {
   char **prog_dirs, **bin_dirs, **prefix_dirs;
   int prog_num, bin_num, prefix_num;
@@ -289,9 +289,14 @@ make_relative_prefix (const char *progname,
        }
     }
 
-  full_progname = lrealpath (progname);
-  if (full_progname == NULL)
-    return NULL;
+  if ( resolve_links )
+    {
+      full_progname = lrealpath (progname);
+      if (full_progname == NULL)
+       return NULL;
+    }
+  else
+    full_progname = strdup(progname);
 
   prog_dirs = split_directories (full_progname, &prog_num);
   bin_dirs = split_directories (bin_prefix, &bin_num);
@@ -387,3 +392,33 @@ make_relative_prefix (const char *progname,
 
   return ret;
 }
+
+
+/* Do the full job, including symlink resolution.
+   This path will find files installed in the same place as the
+   program even when a soft link has been made to the program
+   from somwhere else. */
+
+char *
+make_relative_prefix (progname, bin_prefix, prefix)
+     const char *progname;
+     const char *bin_prefix;
+     const char *prefix;
+{
+  return make_relative_prefix_1 (progname, bin_prefix, prefix, 1);
+}
+
+/* Make the relative pathname without attempting to resolve any links.
+   '..' etc may also be left in the pathname.
+   This will find the files the user meant the program to find if the
+   installation is patched together with soft links. */
+
+char *
+make_relative_prefix_ignore_links (progname, bin_prefix, prefix)
+     const char *progname;
+     const char *bin_prefix;
+     const char *prefix;
+{
+  return make_relative_prefix_1 (progname, bin_prefix, prefix, 0);
+}
+