--- polkit-0.112-r2.ebuild.orig	2014-11-06 11:56:13.294243125 +0300
+++ polkit-0.112-r2.ebuild	2014-11-06 12:30:33.775090734 +0300
@@ -91,7 +91,7 @@
 	use hppa && m='mr'
 	use ia64 && m='mr'
 	use mips && m='mr'
-	pax-mark ${m} ${f}
+	[ -n "$m" ] && pax-mark ${m} ${f}
 }
 
 src_install() {