diff --git a/math/openblas/Makefile b/math/openblas/Makefile
index 3815b2d7dfe9..2934de8d5027 100644
--- a/math/openblas/Makefile
+++ b/math/openblas/Makefile
@@ -1,146 +1,147 @@
 PORTNAME=	openblas
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.3.27
 PORTEPOCH=	2
 CATEGORIES=	math
 MASTER_SITES=	NL/lapack/timing/:lapack_tmg
 DISTFILES=	large.tgz:lapack_tmg \
 		timing.tgz:lapack_tmg
 DIST_SUBDIR=	openblas
 
 MAINTAINER=	phd_kimberlite@yahoo.co.jp
 COMMENT=	Optimized BLAS library based on GotoBLAS2
 WWW=		https://github.com/OpenMathLib/OpenBLAS
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		compiler:c11 cpe fortran gmake perl5 pkgconfig
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	OpenMathLib
 GH_PROJECT=	OpenBLAS
 GH_TAGNAME=	ce3f668
 LARGE_FILE=	large.tgz
 TIMING_FILE=	timing.tgz
 CPE_VENDOR=	openblas_project
 
 USE_LDCONFIG=	yes
 USE_PERL5=	build
 
 OPENBLAS_SVER=	0
 TEST_TARGET=	tests
 
 PLIST_SUB+=	PORTVERSION=${PORTVERSION}
 
 OPTIONS_DEFINE=			DYNAMIC_ARCH INTERFACE64 OPENMP
 OPTIONS_DEFAULT=		OPENMP
 OPTIONS_DEFINE_i386=		AVX AVX2 AVX512
 OPTIONS_DEFINE_amd64=		AVX AVX2 AVX512
 OPTIONS_EXCLUDE_armv6=		OPENMP
 OPTIONS_EXCLUDE_armv7=		OPENMP
 OPTIONS_EXCLUDE_powerpc64le=	OPENMP
 OPTIONS_EXCLUDE_powerpc64=	OPENMP
 OPTIONS_EXCLUDE_powerpc=	OPENMP
 OPTIONS_RADIO=	${OPTIONS_RADIO_${ARCH}}
 OPTIONS_RADIO_powerpc64=	POWER
 OPTIONS_RADIO_POWER=	POWER6 POWER8
 OPTIONS_SUB=	yes
 
 .if defined(BATCH) || defined(PACKAGE_BUILDING)
 OPTIONS_DEFAULT_i386=	DYNAMIC_ARCH
 OPTIONS_DEFAULT_amd64=	DYNAMIC_ARCH
 OPTIONS_DEFAULT_powerpc64le=	DYNAMIC_ARCH
 .endif
 
 DYNAMIC_ARCH_DESC=	Optimize for multiple CPU types, otherwise for this CPU
 INTERFACE64_DESC=	Use 8 byte integers on 64-bit architectures
 OPENMP_DESC=		Use OpenMP for threading
 AVX_DESC=		Support Advanced Vector Extensions (AVX)
 AVX2_DESC=		Support Advanced Vector Extensions 2 (AVX2)
 AVX512_DESC=		Support Advanced Vector Extensions 512 (AVX512)
 POWER6_DESC=		Optimize for POWER6, instead of the default PPC970
 POWER8_DESC=		Optimize for POWER8, instead of the default PPC970
 
 .include <bsd.port.options.mk>
 
 .if ${ARCH} == powerpc64
 USE_GCC=		yes
 .  if ${PORT_OPTIONS:MPOWER6}
 TARGET_CPU_ARCH=	POWER6
 .  elif ${PORT_OPTIONS:MPOWER8}
 TARGET_CPU_ARCH=	POWER8
 .else
 TARGET_CPU_ARCH=	PPC970
 .  endif
 .endif
 
 .if ${ARCH} == powerpc
 USE_GCC=		yes
 TARGET_CPU_ARCH=	PPCG4
 .endif
 
 .if ${ARCH} == powerpc64le
+CFLAGS+=		-lm
 USE_GCC=		yes
 .endif
 
 MAXTHREADS?=	64
 
 .include <bsd.port.pre.mk>
 
 post-extract:
 	cd ${DISTDIR}/${DIST_SUBDIR} ; \
 	${CP} ${LARGE_FILE} ${TIMING_FILE} ${WRKSRC}
 
 post-patch:
 	@${ECHO_CMD} MAKE_NB_JOBS=-1 >> ${WRKSRC}/Makefile.rule
 	@${ECHO_CMD} NUM_THREADS=${MAXTHREADS} >> ${WRKSRC}/Makefile.rule
 	@${ECHO_CMD} USE_THREAD=1 >> ${WRKSRC}/Makefile.rule
 .if ! ${PORT_OPTIONS:MAVX}
 	@${ECHO_CMD} NO_AVX=1 >> ${WRKSRC}/Makefile.rule
 .endif
 .if ! ${PORT_OPTIONS:MAVX2}
 	@${ECHO_CMD} NO_AVX2=1 >> ${WRKSRC}/Makefile.rule
 .endif
 .if ! ${PORT_OPTIONS:MAVX512}
 	@${ECHO_CMD} NO_AVX512=1 >> ${WRKSRC}/Makefile.rule
 .endif
 .if ${PORT_OPTIONS:MDYNAMIC_ARCH}
 	@${ECHO_CMD} DYNAMIC_ARCH=1 >> ${WRKSRC}/Makefile.rule
 	@${ECHO_CMD} DYNAMIC_OLDER=1 >> ${WRKSRC}/Makefile.rule
 .endif
 .if defined(TARGET_CPU_ARCH)
 	@${ECHO_CMD} TARGET=${TARGET_CPU_ARCH} >> ${WRKSRC}/Makefile.rule
 .endif
 .if ${PORT_OPTIONS:MINTERFACE64}
 	@${ECHO_CMD} INTERFACE64=1 >> ${WRKSRC}/Makefile.rule
 .endif
 .if ${PORT_OPTIONS:MOPENMP}
 	@${ECHO_CMD} USE_OPENMP=1 >> ${WRKSRC}/Makefile.rule
 .endif
 .if ${ARCH:M*64*} == ""
 	@${ECHO_CMD} BINARY=32 >> ${WRKSRC}/Makefile.rule
 .else
 	@${ECHO_CMD} BINARY=64 >> ${WRKSRC}/Makefile.rule
 .endif
 
 post-patch-OPENMP-on:
 	@${REINPLACE_CMD} -e "s+OPENBLAS_NUM_THREADS+OMP_NUM_THREADS+g" \
 		${WRKSRC}/test/Makefile \
 		${WRKSRC}/ctest/Makefile
 
 BENCHMARK_MAXTHREADS?=	${MAXTHREADS}
 .if ${PORT_OPTIONS:MOPENMP}
 BENCHMARK_THREADS_FLAG=	OMP_NUM_THREADS=${BENCHMARK_MAXTHREADS}
 .else
 BENCHMARK_THREADS_FLAG=	OPENBLAS_NUM_THREADS=${BENCHMARK_MAXTHREADS}
 .endif
 
 benchmark: build
 	cd ${WRKSRC} ; ${SETENV} ${MAKE_CMD} ${MAKE_ARGS} hpl
 	cd ${WRKSRC}/benchmark ; ${SETENV} ${BENCHMARK_THREADS_FLAG} ${MAKE_CMD} ${MAKE_ARGS}
 
 post-install-DYNAMIC_ARCH-off:
 	cd ${STAGEDIR}${PREFIX} && ls lib/libopenblas_*p-r${PORTVERSION}.* >> ${TMPPLIST}
 
 .include <bsd.port.post.mk>