--- /usr/portage/dev-libs/yajl/yajl-2.0.3.ebuild
+++ /usr/local/portage/dev-libs/yajl/yajl-2.0.3.ebuild
@@ -17,6 +17,7 @@
 
 PATCHES=(
 	"${FILESDIR}"/${PN}-fix_static_linking.patch
+	"${FILESDIR}"/${PN}-add_libm.patch
 )
 
 src_unpack() {