Add "guard" to prevent use of <stdbool.h> in old versions of GCC.

Although we don't load that file, it is indirectly loaded by some
other include files.

diff --git a/v7/src/microcode/confshared.h b/v7/src/microcode/confshared.h
index 015f8272ebaab5e41021ebbc29f16ac4476a67c2..22712d8345e79b22a08c9a97b8e9c415b894cc1d 100644 (file)
--- a/v7/src/microcode/confshared.h
+++ b/v7/src/microcode/confshared.h
@@ -1,6 +1,6 @@
 /* -*-C-*-
 
-$Id: confshared.h,v 11.14 2008/01/29 02:01:56 cph Exp $
+$Id: confshared.h,v 11.15 2008/01/29 02:21:46 cph Exp $
 
 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
     1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
@@ -104,6 +104,11 @@ USA.
 #  define false 0
 #  define true 1
 #  define __bool_true_false_are_defined 1
+#  ifdef __GNUC__
+     /* Old versions of GCC have an incompatible <stdbool.h>.
+       This declaration should prevent them from overriding our defs.  */
+#    define _STDBOOL_H
+#  endif
 #endif
 
 #ifdef HAVE_STDINT_H