[PATCH libxshmfence] futex: unbreak build on FreeBSD 11.0+

[Julien Cristau]

On Fri, Jul  7, 2017 at 16:31:07 +0200, Jan Beich wrote:

> From: Jung-uk Kim <jkim at FreeBSD.org>
> Date: Tue, 15 Apr 2014 17:08:46 +0000
> 
> In file included from src/xshmfence_alloc.c:27:
> In file included from src/xshmfenceint.h:32:
> src/xshmfence_futex.h:40:39: error: use of undeclared identifier 'INT_MAX'
>         return sys_futex(addr, UMTX_OP_WAKE, INT_MAX);
>                                              ^
> 1 error generated.
> 
> Signed-off-by: Jan Beich <jbeich at FreeBSD.org>
> ---
>  src/xshmfence_futex.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/src/xshmfence_futex.h b/src/xshmfence_futex.h
> index ea96cf4..c1b743d 100644
> --- a/src/xshmfence_futex.h
> +++ b/src/xshmfence_futex.h
> @@ -29,6 +29,7 @@
>  #ifdef HAVE_UMTX
>  
>  #include <sys/types.h>
> +#include <sys/limits.h>
>  #include <sys/umtx.h>
>  
>  static inline int sys_futex(void *addr, int op, int32_t val)

Can we make that <limits.h>?

Cheers,
Julien