Index: head/math/hmat-oss/Makefile
===================================================================
--- head/math/hmat-oss/Makefile	(revision 525703)
+++ head/math/hmat-oss/Makefile	(revision 525704)
@@ -1,32 +1,38 @@
 # $FreeBSD$
 
 PORTNAME=	hmat-oss
 DISTVERSION=	1.5.0-348
 DISTVERSIONSUFFIX=	-g76beaf3
 PORTREVISION=	5
 CATEGORIES=	math
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Hierarchical matrix C/C++ library
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 
 LIB_DEPENDS=	libopenblas.so:math/openblas
 
 USES=		cmake compiler:openmp
 USE_GITHUB=	yes
 GH_ACCOUNT=	jeromerobert
 USE_LDCONFIG=	yes
 
 CMAKE_ARGS=	-DBLAS_LIBRARIES:STRING=${LOCALBASE}/lib/libopenblas.so \
 		-DLAPACK_LIBRARIES:STRING=${LOCALBASE}/lib/libopenblas.so
 
+.include <bsd.port.pre.mk>
+
+.if ${CHOSEN_COMPILER_TYPE} == gcc
+USE_GCC=	yes
+.endif
+
 do-test:
 	@cd ${BUILD_WRKSRC} && \
 		${SETENV} ${CONFIGURE_ENV} ${CMAKE_BIN} ${CMAKE_ARGS} -DBUILD_EXAMPLES:BOOL=ON ${CMAKE_SOURCE_PATH} && \
 		${REINPLACE_CMD} "s|#define OPENBLAS_DISABLE_THREADS|\/\/&|" ${BUILD_WRKSRC}/config.h && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} ${ALL_TARGET} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} test
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>