--- libtool-1.5.2/libtool.m4	2004-02-10 00:23:58.000000000 +0200
+++ libtool-1.5.2.shared_ext/libtool.m4	2004-02-10 23:32:08.364266152 +0200
@@ -229,6 +229,7 @@
 tagname=
 AC_LIBTOOL_LANG_C_CONFIG
 _LT_AC_TAGCONFIG
+_LT_AC_SHARED_EXT
 ])# AC_LIBTOOL_SETUP
 
 
@@ -1788,6 +1789,24 @@
 fi
 ])# _LT_AC_TAGCONFIG
 
+# _LT_AC_SHARED_EXT
+# ----------------
+AC_DEFUN([_LT_AC_SHARED_EXT],[
+  if test ! -f "${ofile}"; then
+    AC_MSG_WARN([output file `$ofile' does not exist])
+  fi
+  if test -z `grep -e 'shared_ext.*shrext' $ofile`; then
+    # Make sure $shared_ext gets set to $shrext
+    if sed -e 's/${shared_ext}/${shrext}/g' "$ofile" > "${ofile}T"; then
+      mv "${ofile}T" "$ofile"
+      chmod +x "$ofile"
+    else
+      rm -f "${ofile}T"
+      AC_MSG_ERROR([unable to update shared_ext.])
+    fi
+  fi
+])# _LT_AC_SHARED_EXT
+
 
 # AC_LIBTOOL_DLOPEN
 # -----------------