--- scripts/mknmz.in.orig	Thu Jul 17 22:41:23 2003
+++ scripts/mknmz.in	Fri Jul 18 08:35:17 2003
@@ -369,6 +369,10 @@
 
 sub load_filtermodules () {
     unshift @INC, $FILTERDIR;
+    my $buildfilter;
+	if (defined $ENV{'top_builddir'} ){
+	$buildfilter = $ENV{'top_builddir'} . "/filter" ;
+	unshift @INC, $buildfilter;}
 
     #
     # Windows modules must be loaded first.
@@ -379,6 +383,7 @@
     # Check filter modules
     my @filters = ();
     @filters = glob "$FILTERDIR/*.pl";
+    push(@filters, glob "$buildfilter/*.pl") if defined $ENV{'top_builddir'} ;
 
     load_filters(@filters);
 }