diff -urN /usr/ports/math/yacas/Makefile math/yacas/Makefile
--- /usr/ports/math/yacas/Makefile	2014-12-21 14:25:29.000000000 +0900
+++ math/yacas/Makefile	2015-04-07 00:00:00.000000000 +0900
@@ -11,41 +11,41 @@
 COMMENT=	Yet Another Computer Algebra System
 
 LICENSE=	GPLv2
-LICENSE_FILE=	${WRKSRC}/COPYING
-
-OPTIONS_DEFINE=	DOCS
 
+USES=		compiler:c++11-lib libtool
 GNU_CONFIGURE=	yes
-USES=		libtool
+CONFIGURE_ARGS=	--with-html-dir=${DOCSDIR}
 INSTALL_TARGET=	install-strip
+USE_LDCONFIG=	yes
 
-.include <bsd.port.options.mk>
+PORTDOCS=	*
 
-.if ${ARCH} == "sparc64"
-BROKEN=		Does not compile with GCC 4.2
-.endif
+OPTIONS_DEFINE=		DOCS
 
-.if ${PORT_OPTIONS:MDOCS}
-CONFIGURE_ARGS+=--enable-html-doc --with-html-dir=${DOCSDIR}
-PORTDOCS=	*
-USES+=		perl5
-USE_PERL5=	build
-.else
-CONFIGURE_ARGS+=--disable-html-doc
+DOCS_USES=		perl5
+DOCS_USE=		perl5=build
+DOCS_CONFIGURE_ENABLE=	html-doc
+
+.include <bsd.port.pre.mk>
+
+.if ${CHOSEN_COMPILER_TYPE} == "gcc"
+CPPFLAGS+=	-D_GLIBCXX_USE_C99
 .endif
 
 post-patch:
+	@${REINPLACE_CMD} -e \
+		's|"GNU strip"|"strip"|' ${WRKSRC}/configure
+	@${REINPLACE_CMD} -e \
+		's|%%DATADIR%%|${DATADIR}|' ${WRKSRC}/src/yacasmain.cpp
 #	Can't use USES=shebangfix here, cause the path appears several
 #	times in the file.
-	@${REINPLACE_CMD} -e 's| /bin/bash| ${LOCALBASE}/bin/bash|g' \
-	    ${WRKSRC}/tests/test-yacas
-	@${REINPLACE_CMD} -e 's|%%DATADIR%%|${DATADIR}|' \
-	    ${WRKSRC}/src/yacasmain.cpp
+	@${REINPLACE_CMD} -e \
+		's| /bin/bash| ${LOCALBASE}/bin/bash|g' \
+		${WRKSRC}/tests/test-yacas
 
 regression-test: build
-#	This requires bash. I don't add it as a dependency to the port, as it's
-#	not needed for the general use.
-	@(cd ${WRKSRC} && ${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_FLAGS} \
-	    ${MAKEFILE} check ${MAKE_ARGS})
+#	This requires bash. I don't add it as a dependency to the port, as
+#	it's not needed for the general use.
+	@(cd ${WRKSRC} && ${DO_MAKE_BUILD} check)
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>