--- a/common/autoconf/spec.gmk.in	Wed Jul 05 18:52:11 2017 +0200
+++ b/common/autoconf/spec.gmk.in	Mon Apr 29 12:34:30 2013 -0400
@@ -301,6 +301,8 @@
 # CL is cl.exe only.
 COMPILER_TYPE:=@COMPILER_TYPE@
 
+COMPILER_SUPPORTS_TARGET_BITS_FLAG=@COMPILER_SUPPORTS_TARGET_BITS_FLAG@
+
 CC_OUT_OPTION:=@CC_OUT_OPTION@
 EXE_OUT_OPTION:=@EXE_OUT_OPTION@
 LD_OUT_OPTION:=@LD_OUT_OPTION@