diff --git a/devel/freebsd-gcc9/Makefile b/devel/freebsd-gcc9/Makefile
index 79d93195ca76..fd4ca08eb754 100644
--- a/devel/freebsd-gcc9/Makefile
+++ b/devel/freebsd-gcc9/Makefile
@@ -1,152 +1,154 @@
 PORTNAME=	gcc
 PORTVERSION=	9.5.0
 PORTREVISION=	11
 CATEGORIES=	devel
 MASTER_SITES=	GCC
 PKGNAMEPREFIX=	${TARGETARCH}-
 PKGNAMESUFFIX=	${SUFFIX}
 
 MAINTAINER=	jhb@FreeBSD.org
 COMMENT=	Cross GNU Compiler Collection for ${TARGETARCH}
 WWW=		https://gcc.gnu.org/
 
 LICENSE=	GPLv3 GPLv3RLE
 LICENSE_COMB=	multi
 
 BUILD_DEPENDS=	${BU_PREFIX}-as:devel/binutils@${BU_FLAVOR} \
 		objdump:devel/binutils
 LIB_DEPENDS=	libgmp.so:math/gmp \
 		libmpfr.so:math/mpfr \
 		libmpc.so:math/mpc
 RUN_DEPENDS=	${BU_PREFIX}-as:devel/binutils@${BU_FLAVOR}
 
 FLAVORS=	aarch64 amd64 armv6 armv7 i386 mips mips64 powerpc powerpc64 riscv64 sparc64
 TARGETARCH=	${FLAVOR}
 
 USES=		compiler:c++11-lang cpe gmake iconv libtool makeinfo tar:xz
 CPE_VENDOR=	gnu
 
+CXXFLAGS+=	-std=c++11
+
 PLIST_SUB=	OPSYS=${OPSYS:tl} \
 		SUFFIX=${SUFFIX} \
 		TARGETARCH=${TARGETARCH} \
 		GCC_TARGET=${GCC_TARGET} \
 		GCC_VERSION=${PORTVERSION}
 
 SUB_FILES=	xtoolchain.mk
 SUB_LIST=	BU_PREFIX=${BU_PREFIX} \
 		GCC_TARGET=${GCC_TARGET} \
 		SUFFIX=${SUFFIX}
 
 SUFFIX=		${PORTVERSION:C/([0-9]+).*/\1/}
 
 GNU_CONFIGURE=	yes
 CONFIGURE_OUTSOURCE=	yes
 CONFIGURE_ARGS+=--target=${GCC_TARGET} --disable-nls --enable-languages=c,c++ \
 		--enable-gnu-indirect-function \
 		--enable-initfini-array \
 		--program-prefix=${GCC_TARGET}- \
 		--program-suffix=${SUFFIX} \
 		--without-headers \
 		--with-gmp=${LOCALBASE} \
 		--with-pkgversion="FreeBSD Ports Collection for ${PKGNAMEPREFIX:C/-//g}" \
 		--with-system-zlib \
 		--without-zstd \
 		--with-gxx-include-dir=/usr/include/c++/v1/ \
 		--with-sysroot="/" \
 		--with-as=${LOCALBASE}/bin/${BU_PREFIX}-as \
 		--with-ld=${LOCALBASE}/bin/${BU_PREFIX}-ld
 
 .if ${TARGETARCH:Mpowerpc64*}
 CONFIGURE_ARGS+=--with-abi=elfv2
 .endif
 
 ALL_TARGET=	all-gcc
 INSTALL_TARGET=	install-gcc
 
 .include <bsd.port.pre.mk>
 
 .if ${TARGETARCH:Marm*}
 TARGET_ABI=	gnueabi
 BU_FLAVOR=	arm_${TARGET_ABI}
 BU_PREFIX=	arm-${TARGET_ABI}-${OPSYS:tl}${OSREL}
 .else
 TARGET_ABI=	unknown
 BU_FLAVOR=	${TARGETARCH}
 BU_PREFIX=	${GCC_TARGET}
 .endif
 GCC_TARGET=	${TARGETARCH:S/amd64/x86_64/}-${TARGET_ABI}-${OPSYS:tl}${OSREL}
 
 post-patch:
 	@${REINPLACE_CMD} -e '/LIBSTDCXX/ s/stdc\+\+/c\+\+/g ' \
 		${WRKSRC}//gcc/cp/g++spec.c
 	@${REINPLACE_CMD} -e '/LOCAL_INCLUDE_DIR/ d ' \
 		${WRKSRC}//gcc/Makefile.in
 
 .if ${ARCH} == "amd64"
 CONFIGURE_TARGET=	x86_64-unknown-${OPSYS:tl}${OSREL}
 .else
 CONFIGURE_TARGET=	${ARCH}-unknown-${OPSYS:tl}${OSREL}
 .endif
 
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "powerpc64"
 CONFIGURE_ARGS+=--enable-multilib
 .endif
 
 .if ${ARCH} == "aarch64"
 PLIST_SUB+=	PLUGINS="@comment plugin does not build"
 .else
 PLIST_SUB+=	PLUGINS=""
 .endif
 
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "i386"
 PLIST_SUB+=	FLOAT_H="@comment "
 .else
 PLIST_SUB+=	FLOAT_H=""
 .endif
 
 PLIST=		${.CURDIR}/pkg-plist
 
 .if ${TARGETARCH} == "aarch64"
 PLIST+=		${.CURDIR}/pkg-plist.aarch64
 .endif
 .if ${TARGETARCH} == "aarch64" || ${TARGETARCH:Marm*}
 PLIST+=		${.CURDIR}/pkg-plist.arm
 .endif
 .if ${TARGETARCH:Marm*}
 PLIST+=		${.CURDIR}/pkg-plist.arm_gnueabi
 .endif
 .if ${TARGETARCH} == "amd64"
 PLIST+=		${.CURDIR}/pkg-plist.amd64
 .endif
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "i386"
 PLIST+=		${.CURDIR}/pkg-plist.i386
 .endif
 .if ${TARGETARCH:Mmips*}
 PLIST+=		${.CURDIR}/pkg-plist.mips
 .endif
 .if ${TARGETARCH:Mpowerpc64*}
 PLIST+=		${.CURDIR}/pkg-plist.powerpc64
 .elif ${TARGETARCH:Mpowerpc*}
 PLIST+=		${.CURDIR}/pkg-plist.powerpc
 .endif
 .if ${TARGETARCH:Mriscv*}
 PLIST+=		${.CURDIR}/pkg-plist.riscv
 .endif
 .if ${TARGETARCH} == "sparc64"
 PLIST+=		${.CURDIR}/pkg-plist.sparc64
 .endif
 
 post-install:
 	@${RM} ${STAGEDIR}${PREFIX}/bin/${GCC_TARGET}-${GCC_TARGET}-*
 	@${RM} ${STAGEDIR}${PREFIX}/share/info/*
 	@${RM} ${STAGEDIR}${PREFIX}/man/man7/*
 	@${RM} -r ${STAGEDIR}${PREFIX}/lib/gcc/${GCC_TARGET}/${PORTVERSION}/include-fixed
 .if ${TARGETARCH} == "amd64" || ${TARGETARCH} == "i386"
 	# Conflicts with sys/x86/include/float.h
 	${RM} ${STAGEDIR}${PREFIX}/lib/gcc/${GCC_TARGET}/${PORTVERSION}/include/float.h
 .endif
 	${MKDIR} ${STAGEDIR}${PREFIX}/share/toolchains/
 	${INSTALL_DATA} ${WRKDIR}/xtoolchain.mk \
 		${STAGEDIR}${PREFIX}/share/toolchains/${TARGETARCH}-gcc${SUFFIX}.mk
 
 .include <bsd.port.post.mk>