[COMMITTED] alpha: Fix static gettimeofday symbol

[Adhemerval Zanella]

On 13/02/2020 09:37, Florian Weimer wrote:
> * Adhemerval Zanella:
> 
>> On 13/02/2020 09:04, Florian Weimer wrote:
>>> * Adhemerval Zanella:
>>>
>>>> By undef strong_alias on alpha implementation, the
>>>> default_symbol_version macro becomes an empty macro on static build.
>>>> It fixes the issue introduced at c953219420.
>>>
>>> Aren't we using a different mechanism for this in other cases?
>>> Like defining macros for the alias targets?
>>>
>>> In any case, SET_VERSION for this macro isn't very descriptive.
>>
>> I don't have a strong opinion here, on some ifunc variant definitions
>> some implementation undef/redefine the alias macros.  The problems with 
>> this approach are:
>>
>>   1. once you have composed macros (such as default_symbol_version).
>>     
>>   2. if you want to use the same macro you need to undef after the
>>      common case inclusion. 
>>
>> On both cases you will need to redefined it using libc-symbol.h 
>> internals which defeats the usage of such macros imho (for instance
>> the usage of _weak_alias or any other internal macros).
> 
> I thought we had cases where we redefined the *target* identifiers of
> these aliases, but maybe I'm wrong about that.
> 
> But I'm sure we have cases somewhere where we have a -common.c file
> which contains the code, without the aliases.

It might be a better option, I will prepare a patch.