Index: mdp/Makefile
===================================================================
--- mdp/Makefile	(revision 376239)
+++ mdp/Makefile	(working copy)
@@ -17,6 +17,9 @@
 WRKSRC=		${WRKDIR}/${GH_ACCOUNT}-${GH_PROJECT}-${GH_COMMIT}
 PLIST_FILES=	bin/${PORTNAME}
 
+OPTIONS_DEFINE=		DEBUG
+DEBUG_MAKE_ARGS+=	DEBUG=1
+
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/mdp ${STAGEDIR}${PREFIX}/bin