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