--- /usr/portage/x11-libs/pixman/pixman-0.12.0.ebuild	2009-03-15 14:07:21.000000000 -0700
+++ pixman-0.12.0.ebuild	2009-03-16 20:30:39.000000000 -0700
@@ -21,6 +21,12 @@
 		die "SSE2 selected without SSE"
 	fi
 
+	if use sse2 & ! use mmx; then
+		eerror "You enabled SSE2 but have MMX disabled. This is an invalid"
+		eerror "configuration for pixman. Either do USE='mmx' or USE='-sse2'"
+		die "SSE2 selected without MMX"
+	fi
+
 	if use x86; then
 		if use sse2 && ! $(version_is_at_least "4.2" "$(gcc-version)"); then
 			eerror "SSE2 instructions require GCC 4.2 or higher. Either use"