--- libtool-1.5.6/ltmain.in.SED	2004-05-01 23:06:44.000000000 +0800
+++ libtool-1.5.6/ltmain.in	2004-05-02 01:06:26.803269552 +0800
@@ -33,6 +33,9 @@
 # function.
 progpath="$0"
 
+# define SED for historic ltconfig's generated by Libtool 1.3
+test -z "$SED" && SED=sed
+
 # The name of this program:
 progname=`echo "$progpath" | $SED $basename`
 modename="$progname"