Index: x11-fm/thunar/Makefile
===================================================================
--- x11-fm/thunar/Makefile	(revision 500679)
+++ x11-fm/thunar/Makefile	(working copy)
@@ -38,7 +38,7 @@
 
 PORTSCOUT=	limit:^1\.6\.
 
-OPTIONS_DEFINE=		NLS NOTIFY
+OPTIONS_DEFINE=		DEBUG NLS NOTIFY
 OPTIONS_GROUP=		PLUGINS
 OPTIONS_GROUP_PLUGINS=	PLUG_APR PLUG_SBR PLUG_TPA PLUG_UCA PLUG_WALL
 OPTIONS_DEFAULT=	NOTIFY PLUG_APR PLUG_SBR PLUG_TPA PLUG_UCA PLUG_WALL
@@ -70,6 +70,13 @@
 PLUG_UCA_CONFIGURE_ENABLE=	uca-plugin
 PLUG_WALL_CONFIGURE_ENABLE=	wallpaper-plugin
 
+.include <bsd.port.options.mk>
+
+.if ${PORT_OPTIONS:MDEBUG} || defined(WITH_DEBUG)
+CONFIGURE_ARGS+=	--enable-debug
+WITH_DEBUG?=		yes
+.endif
+
 post-patch:
 	@${REINPLACE_CMD} -e 's|internet-mail|emblem-mail|' \
 		${WRKSRC