Index: Makefile
===================================================================
--- Makefile	(revision 499546)
+++ Makefile	(working copy)
@@ -13,7 +13,7 @@
 
 BUILD_DEPENDS=	bash:shells/bash
 
-USES=		gmake localbase
+USES=		compiler:c++11-lang gmake localbase
 USE_GITHUB=	yes
 GH_TAGNAME=	15Feb2019
 
@@ -34,7 +34,7 @@
 MPI_ALL_TARGET=			mpi
 MPI_PLIST_FILES=		bin/spa_mpi
 MPI_CXXFLAGS=			-I${LOCALBASE}/mpi/openmpi/include
-MPI_LDFLAGS=			${LOCALBASE}/mpi/openmpi/lib/libmpi.so -Wl,-rpath=${LOCALBASE}/mpi/openmpi/lib
+MPI_LDFLAGS=			${LOCALBASE}/mpi/openmpi/lib/libmpi.so ${LOCALBASE}/mpi/openmpi/lib/libmpi_cxx.so -Wl,-rpath=${LOCALBASE}/mpi/openmpi/lib
 MPI_LIB_DEPENDS=		libmpi.so:net/openmpi
 
 PORTSCOUT=	ignore # due to a special version tagging scheme that this project uses portscout fails to find new versions, watching their release page instead