Index: Makefile
===================================================================
--- Makefile	(revision 487131)
+++ Makefile	(working copy)
@@ -13,11 +13,9 @@
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-BROKEN_powerpc64=	Does not build: relocation truncated to fit: R_PPC64_TOC16_DS
-
 CONFLICTS_INSTALL=	babel-*
 
-USES=		cmake:outsource eigen:3
+USES=		compiler:c++11-lang cmake:outsource eigen:3 gnome
 USE_CXXSTD=	gnu++98
 USE_GNOME=	libxml2
 USE_LDCONFIG=	yes
@@ -39,6 +37,11 @@
 GUI_CMAKE_ON=	-DwxWidgets_CONFIG_EXECUTABLE:STRING=${WX_CONFIG}
 GUI_USE=	WX=3.0
 
+.if exists(/usr/lib/libstdc++.so)
+CXXFLAGS+=	-Wno-narrowing
+USE_CXXSTD=	c++11
+.endif
+
 post-patch:
 	${REINPLACE_CMD} -e '/pkgconfig/s,$${LIB_INSTALL_DIR},libdata,' \
 		${WRKSRC}/CMakeLists.txt