--- /usr/portage/media-libs/x264/x264-0.0.20111220.ebuild	2012-04-15 20:31:17.000000000 +0200
+++ /usr/local/portage/petr_p/media-libs/x264/x264-0.0.20111220.ebuild	2012-04-26 20:55:41.000000000 +0200
@@ -31,7 +31,7 @@
 else
 	KEYWORDS="alpha amd64 ~mips ~ppc ~ppc64 sparc x86 ~x86-fbsd"
 fi
-IUSE="10bit custom-cflags debug +interlaced pic static-libs +threads"
+IUSE="10bit custom-cflags debug +interlaced pic sse static-libs +threads"
 
 RDEPEND=""
 DEPEND="amd64? ( >=dev-lang/yasm-1 )
@@ -83,6 +83,7 @@
 		cflags="${cflags//$(get-flag O)/}"
 		cflags="${cflags//-O? /$(get-flag O) }"
 		cflags="${cflags//-g /}"
+		use sse || cflags="${cflags//-mfpmath=sse -msse/}"
 		sed -i "s:^CFLAGS=.*:CFLAGS=${cflags//:/\\:}:" config.mak
 	fi
 }