Index: Makefile
===================================================================
--- Makefile	(revision 501174)
+++ Makefile	(working copy)
@@ -74,4 +74,10 @@
 	@${REINPLACE_CMD} -e 's|internet-mail|emblem-mail|' \
 		${WRKSRC}/plugins/thunar-sendto-email/thunar-sendto-email.desktop.in.in
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+.if defined(WITH_DEBUG)
+CONFIGURE_ARGS+=	--enable-debug
+.endif
+
+.include <bsd.port.post.mk>