Index: head/science/chrono/Makefile
===================================================================
--- head/science/chrono/Makefile	(revision 499915)
+++ head/science/chrono/Makefile	(revision 499916)
@@ -1,42 +1,52 @@
 # $FreeBSD$
 
 PORTNAME=	chrono
 DISTVERSION=	2.0.0-9070
 DISTVERSIONSUFFIX=	-g57a828dc0
 PORTREVISION=	4
 CATEGORIES=	science devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ library for multi-physics simulation
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 PORTSCOUT=	skipv:3.0.0 # their development continues under the branch 2.X. 3.0.0 should be ignored until they release a higher version
 
 BUILD_DEPENDS=	openmpi>0:net/openmpi
 
 USES=		cmake compiler:c++14-lang fortran
 USE_GITHUB=	yes
 GH_ACCOUNT=	project${PORTNAME}
 USE_LDCONFIG=	yes
 
 OPTIONS_DEFINE=		HDF5 DEMOS TESTS
 OPTIONS_SUB=		yes
 
 HDF5_CMAKE_BOOL=	ENABLE_HDF5
 HDF5_LIB_DEPENDS=	libhdf5.so:science/hdf5
 
 DEMOS_DESC=		Build and install demo programs
 DEMOS_CMAKE_BOOL=	BUILD_DEMOS
 
 TESTS_DESC=		Build and install unit test programs
 TESTS_CMAKE_BOOL=	BUILD_TESTING
 
+.include <bsd.port.pre.mk>
+
+.if ${CHOSEN_COMPILER_TYPE} == gcc
+CXXFLAGS+=	-Wno-error=narrowing
+.endif
+
 post-extract:
 	@${RM} ${WRKSRC}/data/opensim/Rajagopal2015.orig
 
 post-patch:
 	@${FIND} ${WRKSRC} -name CMakeLists.txt -o -name "*.cmake*" | ${XARGS} ${REINPLACE_CMD} -i '' 's|lib64|lib|'
+	@${REINPLACE_CMD} -e 's/ -march=native//' \
+		${WRKSRC}/cmake/FindAVX.cmake \
+		${WRKSRC}/cmake/FindFMA.cmake \
+		${WRKSRC}/cmake/FindSSE.cmake
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>