--- gas/config.in.orig	2016-08-03 08:16:32 UTC
+++ gas/config.in
@@ -2,7 +2,7 @@
 
 /* Check that config.h is #included before system headers
    (this works only for glibc, but that should be enough).  */
-#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
+#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__BSDSUniX_kernel__) && !defined(__CONFIG_H__)
 #  error config.h must be #included before system headers
 #endif
 #define __CONFIG_H__ 1