Index: devel/powerpc64-gcc/Makefile
===================================================================
--- devel/powerpc64-gcc/Makefile
+++ devel/powerpc64-gcc/Makefile
@@ -47,7 +47,9 @@
 		--with-gmp=${LOCALBASE} \
 		--with-pkgversion="FreeBSD Ports Collection for ${PKGNAMEPREFIX:C/-//g}" \
 		--with-system-zlib \
-		--with-gcc-include-dir=/usr/include/c++/v1/ \
+		--with-gxx-include-dir=/usr/include/c++/v1/ \
+		--with-build-sysroot="${WRKDIR}/build_sysroot" \
+		--with-sysroot="/" \
 		--with-as=${LOCALBASE}/bin/${BU_PREFIX}-as \
 		--with-ld=${LOCALBASE}/bin/${BU_PREFIX}-ld
 
@@ -60,6 +62,7 @@
 post-patch:
 	@${REINPLACE_CMD} -e '/LIBSTDCXX/ s/stdc\+\+/c\+\+/g ' \
 		${WRKSRC}//gcc/cp/g++spec.c
+	@${MKDIR} ${WRKDIR}/build_sysroot/usr/include
 
 .if ${TARGETARCH} == "amd64"
 CONFIGURE_TARGET=	x86_64-unknown-${OPSYS:tl}${OSREL}