Index: Makefile
===================================================================
--- Makefile	(revision 409811)
+++ Makefile	(working copy)
@@ -63,4 +63,11 @@
 		-e '/find_package(SharedMimeInfo/ d' \
 		${PATCH_WRKSRC}/CMakeLists.txt
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+# boost misdetects the fact that base libstdc++ on 9.x lacks c++11 support
+.if ${OPSYS} == FreeBSD && ${OSVERSION} < 1000000
+CXXFLAGS+=	-DBOOST_NO_CXX11_RVALUE_REFERENCES
+.endif
+
+.include <bsd.port.post.mk>