diff -ru a/m4/ensc_pathprog.m4 b/m4/ensc_pathprog.m4
--- a/m4/ensc_pathprog.m4	2009-10-02 17:25:49.000000000 +0000
+++ b/m4/ensc_pathprog.m4	2009-10-02 17:31:28.000000000 +0000
@@ -61,7 +61,9 @@
 
 	if test "x$5" = x; then
 		if test -h "${$1}"; then
-			$1=`readlink -f "${$1}"`
+			case `readlink "{$1}"` in
+				../*) $1=`readlink -f "${$1}"`;;
+			esac
 		fi
 	fi