--- libffi-3.0.10_rc8.ebuild.orig	2011-03-26 03:42:20.000000000 +0900
+++ libffi-3.0.10_rc8.ebuild	2011-04-12 19:35:57.000000000 +0900
@@ -37,6 +37,7 @@
 }
 
 src_configure() {
+	use userland_BSD && export HOST="${CHOST}"
 	econf \
 		--disable-dependency-tracking \
 		$(use_enable static-libs static) \