--- gcc/config/i386/t-bsdsunix.orig	2017-02-09 20:23:12 UTC
+++ gcc/config/i386/t-bsdsunix
@@ -0,0 +1,3 @@
+MULTILIB_OPTIONS = m64/m32
+MULTILIB_DIRNAMES = 64 32
+MULTILIB_OSDIRNAMES = ../lib ../lib32