-diff -burN crack-0.3.orig/config.m4 crack-0.3/config.m4
---- crack-0.3.orig/config.m4 2005-09-05 15:23:35.874777736 +0200
-+++ crack-0.3/config.m4 2005-09-05 15:23:59.894126240 +0200
+diff -burN crack-0.4.orig/config.m4 crack-0.4/config.m4
+--- crack-0.4.orig/config.m4 2005-09-05 15:23:35.874777736 +0200
++++ crack-0.4/config.m4 2005-09-05 15:23:59.894126240 +0200
@@ -10,7 +10,7 @@
if test "$PHP_CRACK" != "yes"; then
AC_MSG_ERROR(Only the bundled library is supported right now)