On 11/30/2009 10:19 PM, Ralf Wildenhues wrote:
- AC_HEADER_STDBOOL
probably a macro bug, haven't investigated yet.
Not necessarily; _Bool is not provided by g++ unless stdbool.h is
included. Can be fixed by the attached patch, but it's better declared
a feature given that the suggested snippet in the documentation uses
HAVE__BOOL only if stdbool.h is not found.
Paolo
>From 480aade50f27e18a0e3d6731b856d70752bb15d4 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <bonz...@gnu.org>
Date: Tue, 1 Dec 2009 11:38:19 +0100
Subject: [PATCH] Fix _Bool detection under G++.
* lib/autoconf/headers.m4 (AC_HEADER_STDBOOL): Include stdbool.h
when testing for _Bool.
---
ChangeLog | 6 ++++++
lib/autoconf/headers.m4 | 4 +++-
2 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 572d645..71c6182 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-12-01 Paolo Bonzini <bonz...@gnu.org>
+
+ Fix _Bool detection under G++.
+ * lib/autoconf/headers.m4 (AC_HEADER_STDBOOL): Include stdbool.h
+ when testing for _Bool.
+
2009-11-27 Paolo Bonzini <bonz...@gnu.org>
Bump m4.m4 serial number.
diff --git a/lib/autoconf/headers.m4 b/lib/autoconf/headers.m4
index 5c35ab5..d9e291d 100644
--- a/lib/autoconf/headers.m4
+++ b/lib/autoconf/headers.m4
@@ -674,7 +674,9 @@ AC_DEFUN([AC_HEADER_STDBOOL],
]])],
[ac_cv_header_stdbool_h=yes],
[ac_cv_header_stdbool_h=no])])
-AC_CHECK_TYPES([_Bool])
+AC_CHECK_TYPES([_Bool], , ,
+[AC_INCLUDES_DEFAULT
+#include <stdbool.h>])
if test $ac_cv_header_stdbool_h = yes; then
AC_DEFINE(HAVE_STDBOOL_H, 1, [Define to 1 if stdbool.h conforms to C99.])
fi
--
1.6.5.2
