Index: head/misc/mxnet/Makefile
===================================================================
--- head/misc/mxnet/Makefile	(revision 525701)
+++ head/misc/mxnet/Makefile	(revision 525702)
@@ -1,66 +1,66 @@
 # $FreeBSD$
 
 PORTNAME=	mxnet
 DISTVERSION=	1.6.0
 DISTVERSIONSUFFIX=	.rc0
 PORTREVISION=	4
 CATEGORIES=	misc # machine-learning
 
 PATCH_SITES=	https://github.com/${GH_ACCOUNT}/${GH_PROJECT}/commit/
 PATCHFILES+=	cbd43cab6eef8362bcb1cc91e59b49045c90444c.patch:-p1 \
 		89c180d47b407913f0a9948d6e7f55daa523e7aa.patch:-p1
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Apache MXNet: Ultra-scalable deep learning framework
 
 LICENSE=	APACHE20
 
 BUILD_DEPENDS=	googletest>0:devel/googletest \
 		${LOCALBASE}/include/dnnl.h:math/mkl-dnn
 LIB_DEPENDS=	libdmlc.so:devel/dmlc-core \
 		liblapack.so:math/lapack \
 		libomp.so:devel/openmp \
 		libopenblas.so:math/openblas
 
-USES=		cmake localbase:ldflags
+USES=		cmake compiler:c++11-lang localbase:ldflags
 USE_GITHUB=	yes
 GH_ACCOUNT=	apache
 GH_PROJECT=	incubator-mxnet
 GH_TUPLE=	apache:incubator-tvm:5d66e7a:tvm/3rdparty/tvm \
 		dmlc:dlpack:b90e939:dlpack/3rdparty/dlpack
 USE_LDCONFIG=	yes
 
 CMAKE_OFF=	USE_CUDA USE_CUDNN USE_MKLDNN USE_NCCL ENABLE_CUDA_RTC \
 		BUILD_CPP_EXAMPLES USE_JEMALLOC USE_MKL_IF_AVAILABLE
 
 LDFLAGS+=	-pthread -lexecinfo
 
 OPTIONS_DEFINE=		CPP OPENCV
 OPTIONS_DEFAULT=	CPP OPENCV
 OPTIONS_SUB=		yes
 
 CPP_DESC=		Install the C++ binding (cpp-package)
 CPP_CMAKE_BOOL=		USE_CPP_PACKAGE
 CPP_USES=		python:build
 CPP_VARS=		BINARY_ALIAS=python=${PYTHON_CMD}
 
 OPENCV_CMAKE_BOOL=	USE_OPENCV
 OPENCV_LIB_DEPENDS=	libopencv_core.so:graphics/opencv-core \
 			libopencv_videoio.so:graphics/opencv
 
 .include <bsd.port.pre.mk>
 
 .if ${ARCH} != amd64 && ${ARCH} != i386
 CMAKE_OFF+=	USE_SSE
 .endif
 
 post-patch:
 .for lib in mkldnn.h mkldnn_types.h
 	@${RM} ${WRKSRC}/include/mkldnn/${lib}
 	@${LN} -s ${LOCALBASE}/include/dnnl.h ${WRKSRC}/include/mkldnn/${lib}
 .endfor
 
 post-install-CPP-on: # https://github.com/apache/incubator-mxnet/issues/17080
 	@cd ${STAGEDIR}${PREFIX} && ${RM} include/mxnet-cpp/.gitignore include/mxnet-cpp/CPPLINT.cfg
 
 .include <bsd.port.post.mk>