From 0e672b6be3f214cf0fd941398b41a2014c4d8921 Mon Sep 17 00:00:00 2001
From: "Gary V. Vaughan" <gary@gnu.org>
Date: Fri, 27 Nov 1998 16:52:37 +0000
Subject: [PATCH] Added LD path canonicalization.

---
 ChangeLog   |  5 +++++
 libtool.m4  | 46 ++++++++++++++++++++++++++++++++++++++++++----
 ltconfig.in | 40 ++++++++++++++++++++++++++++++++++++++--
 3 files changed, 85 insertions(+), 6 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a14f7353..0ae69fb7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 1998-11-27  Gary V. Vaughan  <garyv@oranda.demon.co.uk>
 
+	* libtool.m4 (AM_PROG_LD): Cannonicalize the absolute path for the
+	ld program;  The order is funny to provide canonicalization to
+	paths with '\\' separators as well as '/'.
+	* ltconfig.in: ditto.
+
 	* AUTHORS: Added myself as a co-maintainer.
 
 	* ltconfig.in (archive_cmds): The `;\' in a compound statement is
diff --git a/libtool.m4 b/libtool.m4
index 09cba0c6..0e058d28 100644
--- a/libtool.m4
+++ b/libtool.m4
@@ -189,12 +189,50 @@ if test "$ac_cv_prog_gcc" = yes; then
   AC_MSG_CHECKING([for ld used by GCC])
   ac_prog=`($CC -print-prog-name=ld) 2>&5`
   case "$ac_prog" in
-  # Accept absolute paths.
+    # Accept absolute paths.
 changequote(,)dnl
-  /* | [A-Za-z]:\\*)
+    /* | [A-Za-z]:/*)
+      # Canonicalize the path of ld
+      re_direlt='/[^/]*/\.\./'
+      sub_uncdrive='s%^\([A-Za-z]\):/%//\1/%'
 changequote([,])dnl
-    test -z "$LD" && LD="$ac_prog"
-    ;;
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%g"`
+      done
+      case "$host_os" in
+      cygwin*)
+        # Convert to a UNC path for cygwin
+        test -z "$LD" && LD=`echo X$ac_prog | $Xsed -e "$sub_uncdrive"`
+	;;
+      *)
+        test -z "$LD" && LD="$ac_prog"
+	;;
+      esac
+      ;;
+    ##
+    ## FIXME:  The code fails later on if we try to use an $LD with
+    ##         '\\' path separators.
+    ##
+changequote(,)dnl
+    [A-Za-z]:[\\]*)
+      # Canonicalize the path of ld
+      re_direlt='\\[^\\]*\\\.\.\(\\\)'
+      sub_uncdrive='s%^\([A-Za-z]\):\\%//\1/%'
+changequote([,])dnl
+      sub_uncdir='s%\\%/%g'
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+        ac_prog=`echo $ac_prog| sed "s%$re_direlt%\1%g"`
+      done
+      case "$host_os" in
+      cygwin*)
+        # Convert to a UNC path for cygwin
+        test -z "$LD" && LD=`echo X$ac_prog | sed -e 's%^X%%' -e "$sub_uncdrive" -e "$sub_uncdir"`
+	;;
+      *)
+        test -z "$LD" && LD="$ac_prog"
+	;;
+      esac
+      ;;
   "")
     # If it fails, then pretend we aren't using GCC.
     ac_prog=ld
diff --git a/ltconfig.in b/ltconfig.in
index c17fc41b..0ad5f3fa 100755
--- a/ltconfig.in
+++ b/ltconfig.in
@@ -867,8 +867,44 @@ if test -z "$LD"; then
     ac_prog=`($CC -print-prog-name=ld) 2>&5`
     case "$ac_prog" in
     # Accept absolute paths.
-    /* | [A-Za-z]:[/\\]*)
-      test -z "$LD" && LD="$ac_prog"
+    /* | [A-Za-z]:/*)
+      re_direlt='/[^/]*/\.\./'
+      sub_uncdrive='s%^\([A-Za-z]\):/%//\1/%'
+      # Canonicalize the path of ld
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%g"`
+      done
+      case "$host_os" in
+      cygwin*)
+        # Convert to a UNC path for cygwin
+        test -z "$LD" && LD=`echo X$ac_prog | $Xsed -e "$sub_uncdrive"`
+	;;
+      *)
+        test -z "$LD" && LD="$ac_prog"
+	;;
+      esac
+      ;;
+    ##
+    ## FIXME:  The code fails later on if we try to use an $LD with
+    ##         '\\' path separators.
+    ##
+    [A-Za-z]:[\\]*)
+      re_direlt='\\[^\\]*\\\.\.\(\\\)'
+      sub_uncdrive='s%^\([A-Za-z]\):\\%//\1/%'
+      sub_uncdir='s%\\%/%g'
+      # Canonicalize the path of ld
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+        ac_prog=`echo $ac_prog| sed "s%$re_direlt%\1%g"`
+      done
+      case "$host_os" in
+      cygwin*)
+        # Convert to a UNC path for cygwin
+        test -z "$LD" && LD=`echo X$ac_prog | $Xsed -e "$sub_uncdrive" -e "$sub_uncdir"`
+	;;
+      *)
+        test -z "$LD" && LD="$ac_prog"
+	;;
+      esac
       ;;
     "")
       # If it fails, then pretend we are not using GCC.