math/givaro: Fix build with llvm16

Approved by:	portmgr (blanket)
Sponsored by:	The FreeBSD Foundation

math/givaro/Makefile

@@ -16,21 +16,24 @@ LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 LIB_DEPENDS=	libgmp.so:math/gmp
 
 USES=		autoreconf compiler:c++11-lang gmake libtool pathfix pkgconfig
+USE_CXXSTD=	c++11
+USE_GITHUB=	yes
+GH_ACCOUNT=	linbox-team
+USE_LDCONFIG=	yes
+
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-gmp="${LOCALBASE}"
-USE_LDCONFIG=	yes
+
 INSTALL_TARGET=	install-strip
 TEST_TARGET=	check
-USE_GITHUB=	yes
-GH_ACCOUNT=	linbox-team
 
 OPTIONS_DEFINE=	DOCS
 OPTIONS_SUB=	yes
 
 DOCS_BUILD_DEPENDS=	doxygen:devel/doxygen \
 			dot:graphics/graphviz
-DOCS_CONFIGURE_ON=	--enable-doc --with-docdir=${DOCSDIR}
 DOCS_USE=		TEX=base:build,dvipsk:build,latex:build,pdftex:build
+DOCS_CONFIGURE_ON=	--enable-doc --with-docdir=${DOCSDIR}
 
 post-install-DOCS-on:
 	${RMDIR} ${STAGEDIR}${DOCSDIR}/givaro-dev-html