[PATCH] linux: Make tst-mount-consts unsupported for kernels headers older than 5.0

[Florian Weimer]

* Adhemerval Zanella:

> The linux/mount.h is only provided by Linux 5.0.
>
> Checked on x86_64-linux-gnu.
> ---
>  sysdeps/unix/sysv/linux/tst-mount-consts.py | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/sysdeps/unix/sysv/linux/tst-mount-consts.py b/sysdeps/unix/sysv/linux/tst-mount-consts.py
> index 4fb356310b..0f5b982430 100755
> --- a/sysdeps/unix/sysv/linux/tst-mount-consts.py
> +++ b/sysdeps/unix/sysv/linux/tst-mount-consts.py
> @@ -34,6 +34,9 @@ def main():
>      args = parser.parse_args()
>  
>      linux_version_headers = glibcsyscalls.linux_kernel_version(args.cc)
> +    # Linux started to provide mount.h with 5.0.
> +    if linux_version_headers < (5, 0):
> +        sys.exit (77)
>      # Constants in glibc were updated to match Linux v5.19.  When glibc
>      # constants are updated this value should be updated to match the
>      # released kernel version from which the constants were taken.

Should this use compile_c_snippet from the other patch?

Thanks,
Florian