[Mesa-dev] [PATCH] intel: tools: fix build on old systems

[Matt Turner]

On Thu, Jul 5, 2018 at 7:42 AM Lionel Landwerlin
<lionel.g.landwerlin at intel.com> wrote:
>
> Older system might not have support for memfd_create at the kernel
> level. There we won't be able to use aubinator.
>
> We also initially tried to workaround some libc having the
> memfd_create syscall number defined, but not the memfd_create()
> function.
>
> This change fixes the broken build on the travis CI by only compiling
> aubinator if memfd_create() is available as part of the libc.

memfd_create() was added in glibc-2.27. I think that's too new to rely
on. I know aubinator is a developer tool, but I don't think most
developers have glibc 2.27 yet.

I'd suggest we rename our "memfd_create" functions to avoid the clash
with glibc-2.27+ and just use them regardless.

> Annoyingly the man page says which should include <sys/memfd.h> but

It doesn't exist in upstream glibc either. I think the man page is simply wrong.