Re: [PATCH 1/3] configure.ac: more carefully detect availability of res_querydomain(3)

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On 2/22/19 2:52 AM, Patrick Steinhardt wrote:
> On Mon, Feb 04, 2019 at 03:31:18PM +0100, Patrick Steinhardt wrote:
>> Since glibc 2.2, the function res_querydomain(3) is implemented as a
>> define to `__res_querydomain`. Due to this implementation detail, using
>> `AC_CHECK_LIB` with a symbol name of "res_querydomain" will cause a
>> linking failure and thus fail to detect its availability. This is why
>> right now, we try to detect availability of `__res_querydomain` instead.
>>
>> Unfortunately, this may break on other platforms where there is no
>> `__res_querydomain` but only the function without leading underscores.
>> To fix this, we can perform another `AC_CHECK_LIB([resolv],
>> [res_querydomain], ...)` call in case where the other one was not found
>> and only raise an error if both symbols weren't found.
>>
>> Signed-off-by: Patrick Steinhardt <ps@xxxxxx>
> 
> Is there anything I can do to get this rolling and improve my
> patches? Or did I accidentally pick the wrong mailing list for
> the userspace part of nfs?
Sorry about this... I'm looking at them now... 

steved.

> 
> Patrick
> 



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