--- ports/Mk.orig/bsd.port.mk	2011-10-30 15:18:11.000000000 +0100
+++ ports/Mk/bsd.port.mk	2011-10-30 16:54:58.000000000 +0100
@@ -1686,6 +1686,11 @@
 .include "${PORTSDIR}/Mk/bsd.gcc.mk"
 .endif
 
+.if defined(USE_CLANG) || defined(CLANG_PREFERRED) \
+	|| defined(PREFER_CLANG) || defined(FORCE_CLANG)
+.include "${PORTSDIR}/Mk/bsd.clang.mk"
+.endif
+
 .if defined(USE_BINUTILS) && !defined(DISABLE_BINUTILS)
 BUILD_DEPENDS+=	${LOCALBASE}/bin/as:${PORTSDIR}/devel/binutils
 BINUTILS?=	ADDR2LINE AR AS CPPFILT GPROF LD NM OBJCOPY OBJDUMP RANLIB \