[PATCH wayland] build: Add declaration checks to check for required syscall flags

[Kristian Høgsberg]

On Tue, Jun 04, 2013 at 01:27:49PM +0100, Rob Bradford wrote:
> From: Rob Bradford <rob at linux.intel.com>
> 
> The required flags are relatively new and some older enterprise distributions
> do not feature them.

Applied with TFD_CLOEXEC fixup as the other patch, thanks.

Kristian

> https://bugs.freedesktop.org/show_bug.cgi?id=63360
> ---
>  configure.ac | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/configure.ac b/configure.ac
> index f317a73..d4c58e6 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -41,6 +41,17 @@ AC_SUBST(GCC_CFLAGS)
>  
>  AC_CHECK_FUNCS([accept4 mkostemp])
>  
> +AC_CHECK_DECL(SFD_CLOEXEC,[],
> +	      [AC_MSG_ERROR("SFD_CLOEXEC is needed to compile weston")],
> +	      [[#include <sys/signalfd.h>]])
> +AC_CHECK_DECL(SFD_CLOEXEC,[],
> +	      [AC_MSG_ERROR("TFD_CLOEXEC is needed to compile weston")],
> +	      [[#include <sys/timerfd.h>]])
> +AC_CHECK_DECL(CLOCK_MONOTONIC,[],
> +	      [AC_MSG_ERROR("CLOCK_MONOTONIC is needed to compile weston")],
> +	      [[#include <time.h>]])
> +AC_CHECK_HEADERS([execinfo.h])
> +
>  AC_ARG_ENABLE([scanner],
>                [AC_HELP_STRING([--disable-scanner],
>                                [Disable compilation of wayland-scanner])],
> -- 
> 1.8.1.4
> 
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