Re: [PATCH] xf86drm: only include <sys/sysctl.h> for FreeBSD build case

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Hi

On 2020년 01월 10일 00:28, Niclas Zeising wrote:
> On 2020-01-09 16:18, Jani Nikula wrote:
>> On Thu, 09 Jan 2020, Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx> wrote:
>>> The <sys/sysctl.h> header is only required FreeBSD and GNU libc
>>> 2.30 starts to warn about Linux specific <sys/sysctl.h> header
>>> deprecation. Only include <sys/sysctl.h> for FreeBSD.
>>>
>>> Signed-off-by: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
>>> ---
>>>   xf86drmMode.c |    2 ++
>>>   1 files changed, 2 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/xf86drmMode.c b/xf86drmMode.c
>>> index 207d7be..ff1d31d 100644
>>> --- a/xf86drmMode.c
>>> +++ b/xf86drmMode.c
>>> @@ -42,9 +42,11 @@
>>>   #include <stdint.h>
>>>   #include <stdlib.h>
>>>   #include <sys/ioctl.h>
>>> +#if defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
>>>   #ifdef HAVE_SYS_SYSCTL_H
>>
>> Not that I know anything about this, but shouldn't you instead fix
>> HAVE_SYS_SYSCTL_H definition in configure stage to only be enabled on
>> FreeBSD?
>>
>> BR,
>> Jani.
>>
>>>   #include <sys/sysctl.h>
>>>   #endif
>>> +#endif /* defined (__FreeBSD__) || defined (__FreeBSD_kernel__) */
>>>   #include <stdio.h>
>>>   #include <stdbool.h>
>>
> 
> Hi!
> This fix looks OK on FreeBSD (I haven't had time to test), however, as
> has been pointed out, perhaps the change should go into the meson build
> script or configure instead.

Ok, I will try to fix in build side instead of include itself.

> I don't know if other OSes (other BSDs primarily) need this as well. I'm
> pretty sure it's needed on DragonflyBSD at least.
> Perhaps keep the include for everything except Linux for the time being?

As far as I checked, sysctlbyname() called only with FreeBSD build flag
is only function defined in <sys/sysctl.h> at least for xf86drmMode.c,
but I missed something. The header deprecation is done from Linux, so it
seems fine removing the header include only for Linux.

Best Regards,
- Seung-Woo Kim

> Regards

-- 
Seung-Woo Kim
Samsung Research
--

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