Index: Makefile
===================================================================
--- Makefile	(revision 431672)
+++ Makefile	(working copy)
@@ -38,5 +38,7 @@
 post-extract:
 	@${REINPLACE_CMD} -e "s/default/default.sample/g" ${WRKSRC}/Makefile.in
 	@${MV} ${WRKSRC}/xplanet/config/default ${WRKSRC}/xplanet/config/default.sample
+	@${FIND} ${WRKSRC}/src -name "*.cpp"|${XARGS} -tI{} ${REINPLACE_CMD} \
+		-e "/getline/ s|[!=]= NULL||" {}
 
 .include <bsd.port.mk>