--- /var/lib/portage/portage/media-libs/libtxc_dxtn/libtxc_dxtn-1.0.1.ebuild	2012-06-07 15:31:18.000000000 +0200
+++ libtxc_dxtn-1.0.1.ebuild	2012-08-13 14:55:10.871733038 +0200
@@ -11,24 +11,27 @@
 SRC_URI="http://people.freedesktop.org/~cbrill/${PN}/${P}.tar.bz2"
 
 LICENSE="MIT"
 SLOT="0"
 KEYWORDS="amd64 x86"
-IUSE=""
+IUSE="multilib"
 
 RDEPEND="media-libs/mesa"
 DEPEND="${RDEPEND}"
 
 RESTRICT="bindist"
 
 foreachabi() {
-	local ABI
-
-	for ABI in $(get_all_abis); do
-		multilib_toolchain_setup ${ABI}
-		AUTOTOOLS_BUILD_DIR=${WORKDIR}/${ABI} "${@}"
-	done
+	if use multilib; then
+		local ABI
+		for ABI in $(get_all_abis); do
+			multilib_toolchain_setup ${ABI}
+			AUTOTOOLS_BUILD_DIR=${WORKDIR}/${ABI} "${@}"
+		done
+	else
+		"${@}"
+	fi
 }
 
 src_configure() {
 	foreachabi autotools-utils_src_configure
 }