$NetBSD: patch-ag,v 1.12 2008/03/14 01:16:36 joerg Exp $

--- lib/gvc/Makefile.in.orig	2008-03-11 04:40:48.000000000 +0100
+++ lib/gvc/Makefile.in
@@ -422,7 +422,7 @@ libgvc_la_LIBADD = $(libgvc_C_la_LIBADD)
 	$(top_builddir)/lib/cdt/libcdt.la \
 	$(top_builddir)/lib/graph/libgraph.la \
 	$(top_builddir)/lib/pathplan/libpathplan.la \
-	@EXPAT_LIBS@ @Z_LIBS@
+	@EXPAT_LIBS@ @Z_LIBS@ -lm ${PTHREAD_LDFLAGS} ${PTHREAD_LIBS}
 
 
 #For use without plugins.
