--- a/libical-0.48.ebuild
+++ b/libical-0.48.ebuild
@@ -38,6 +38,11 @@
 }
 
 src_install() {
+	for FILE in `find "${S}" -iname \*.la`
+	do
+		sed -i~ -e "s;/usr;${D}/usr;" "${FILE}"
+	done
+
 	emake DESTDIR="${D}" install
 
 	rm -f "${ED}"usr/lib*/${PN}*.la