[Mesa-dev] [PATCH v2] configure.ac: Do not error out if librt is not available.

[Matt Turner]

On Fri, Feb 8, 2013 at 7:19 PM, Vinson Lee <vlee at freedesktop.org> wrote:
> Some platforms, such as Mac OS X, do not have librt.

But Mac OS X (apparently from my quick Google search) doesn't clock_gettime.

clock_gettime is called from two places:
  src/gallium/auxiliary/os/os_time.c
  src/mesa/drivers/dri/intel/intel_screen.c

So this patch will just turn configure failures on platforms we do
care about into build failures. I don't think this is a good idea.

Do we care about either of these pieces of code on Mac OS X? Actually,
I'm curious why you're doing testing on Mac OS X at all? src/glx/apple
hasn't even been converted to automake.

> Signed-off-by: Vinson Lee <vlee at freedesktop.org>
> ---
>  configure.ac | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/configure.ac b/configure.ac
> index 6735fdc..9b9a0ad 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -500,8 +500,7 @@ AC_CHECK_FUNC([dlopen], [DEFINES="$DEFINES -DHAVE_DLOPEN"],
>  AC_SUBST([DLOPEN_LIBS])
>
>  AC_CHECK_FUNCS([clock_gettime], [CLOCK_LIB=],
> -               [AC_CHECK_LIB([rt], [clock_gettime], [CLOCK_LIB=-lrt],
> -                             [AC_MSG_ERROR([Couldn't find clock_gettime])])])
> +               [AC_CHECK_LIB([rt], [clock_gettime], [CLOCK_LIB=-lrt])])
>  AC_SUBST([CLOCK_LIB])
>
>  dnl See if posix_memalign is available
> --
> 1.7.12.4 (Apple Git-37)