Index: Makefile
===================================================================
--- Makefile	(revision 483399)
+++ Makefile	(working copy)
@@ -14,7 +14,7 @@
 
 LIB_DEPENDS=	libebml.so:textproc/libebml
 
-USES=		cmake pathfix pkgconfig tar:xz
+USES=		cmake compiler:c++11-lang pathfix pkgconfig tar:xz
 USE_LDCONFIG=	yes
 GNU_CONFIGURE=	yes