Index: /usr/ports/devel/boost-all/compiled.mk
===================================================================
--- /usr/ports/devel/boost-all/compiled.mk	(revision 315714)
+++ /usr/ports/devel/boost-all/compiled.mk	(working copy)
@@ -13,9 +13,15 @@
 		--prefix=${PREFIX}
 
 .if ${ARCH} == amd64
-BJAM_ARGS+=	cxxflags=-fPIC
+BJAM_ARGS_CXXFLAGS=-fPIC
 .endif
 
+.if ${PORT_OPTIONS:MLIBCXX}
+BJAM_ARGS+=	cxxflags="${BJAM_ARGS_CXXFLAGS} -stdlib=libc++ -std=c++11" linkflags="-stdlib=libc++"
+.else
+BJAM_ARGS+=	cxxflags="${BJAM_ARGS_CXXFLAGS}"
+.endif
+
 NO_CCACHE=	yes
 .if ${CC:T:Mgcc*}
 BOOST_TOOLSET:=	gcc
Index: /usr/ports/devel/boost-libs/Makefile
===================================================================
--- /usr/ports/devel/boost-libs/Makefile	(revision 315714)
+++ /usr/ports/devel/boost-libs/Makefile	(working copy)
@@ -8,8 +8,9 @@
 
 BUILD_DEPENDS+=	bjam:${PORTSDIR}/devel/boost-jam
 
-OPTIONS_DEFINE=	VERBOSE_BUILD DEBUG ICU OPTIMIZED_CFLAGS
+OPTIONS_DEFINE=	LIBCXX VERBOSE_BUILD DEBUG ICU OPTIMIZED_CFLAGS
 OPTIONS_DEFAULT=	ICU
+LIBCXX_DESC=	Build with libc++ and c++11
 VERBOSE_BUILD_DESC=	Show compiler messages
 ICU_DESC=		Boost.Regex with ICU unicode support