--- boot0-9.0.ebuild.orig	2012-05-18 00:01:27.000000000 +0900
+++ boot0-9.0.ebuild.orig	2012-06-06 19:21:19.000000000 +0900
@@ -18,10 +18,13 @@ 
 
 RDEPEND=""
 DEPEND="=sys-freebsd/freebsd-mk-defs-${RV}*
-	=sys-freebsd/freebsd-lib-${RV}*"
+	=sys-freebsd/freebsd-lib-${RV}*
+	|| ( =sys-devel/gcc-4.5* >=sys-devel/clang-3.0 )"
 
 S="${WORKDIR}/sys/boot"
 
+PATCHES=( "${FILESDIR}"/${P}-clang.patch )
+
 boot0_use_enable() {
 	use ${1} && mymakeopts="${mymakeopts} LOADER_${2}_SUPPORT=\"yes\""
 }
@@ -34,7 +37,7 @@ 
 }
 
 src_prepare() {
-	sed -e '/-fomit-frame-pointer/d' -e '/-mno-align-long-strings/d' \
+	sed -e '/-mno-align-long-strings/d' \
 		-i "${S}"/i386/boot2/Makefile \
 		-i "${S}"/i386/gptboot/Makefile \
 		-i "${S}"/i386/gptzfsboot/Makefile \
@@ -44,6 +47,16 @@ 
 src_compile() {
 	strip-flags
 	append-flags "-fno-strict-aliasing"
+
+	if [ -e /usr/bin/clang ] ; then
+		export CC=clang
+	else
+		GCC=`ls -1 /usr/bin/gcc-4.5* | tail -n 1`
+		if [ -e ${GCC} ] ; then
+			export CC=${GCC}
+		fi
+	fi
+
 	NOFLAGSTRIP="yes" freebsd_src_compile
 }