From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:50638) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QQoOX-00022a-Lx for qemu-devel@nongnu.org; Sun, 29 May 2011 18:23:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QQoOW-0001D9-OU for qemu-devel@nongnu.org; Sun, 29 May 2011 18:23:37 -0400 Received: from mail-qw0-f45.google.com ([209.85.216.45]:58269) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QQoOW-0001Cw-KK for qemu-devel@nongnu.org; Sun, 29 May 2011 18:23:36 -0400 Received: by qwj8 with SMTP id 8so1819423qwj.4 for ; Sun, 29 May 2011 15:23:36 -0700 (PDT) From: Alexandre Raymond Date: Sun, 29 May 2011 18:22:48 -0400 Message-Id: <1306707770-14632-2-git-send-email-cerbere@gmail.com> In-Reply-To: <1306707770-14632-1-git-send-email-cerbere@gmail.com> References: <1306707770-14632-1-git-send-email-cerbere@gmail.com> Subject: [Qemu-devel] [PATCH V2 1/3] Darwin: Fix incorrect check for fdatasync() in configure List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Alexandre Raymond , andreas.faerber@web.de Under darwin (OS X 10.6.7), a symbol exists for the fdatasync() method but it is not supported because _POSIX_SYNCHRONIZED_IO is set to '-1'. Enable fdatasync() only if _POSIX_SYNCHRONIZED_IO is '>0', as per The Open Group Base Specifications Issue 7. Signed-off-by: Alexandre Raymond --- configure | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/configure b/configure index a318d37..b21ef75 100755 --- a/configure +++ b/configure @@ -2477,7 +2477,13 @@ fi fdatasync=no cat > $TMPC << EOF #include -int main(void) { return fdatasync(0); } +int main(void) { +#if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0 +return fdatasync(0); +#else +#abort Not supported +#endif +} EOF if compile_prog "" "" ; then fdatasync=yes -- 1.7.5