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Re: Any way to apply patch on some archs only?





Le Thu Jan 29 2015 at 9:11:08 AM, Raphael Hertzog <hertzog@debian.org> a écrit :
Hi,

On Thu, 29 Jan 2015, olivier sallou wrote:
> I d like to know if it is posdible to apply a patch on some archs only.
> I have some FTBS on some archs for a package. I have a patch but I d like
> to apply it only on failings archs and keep original upstream code for
> others.
>
> Patches can indeed fix an issue but be less performant/optimal...
>
> I could not find a way to do so, but i am sure some others already faced
> the case before me and can drive me to the doc i did not find :-)

Best practices are to have a patch that can be used on all architectures
so that it can be submitted upstream. When you need architecture specific
behaviour, then you need code that will test some architecture-specific
variable/macros.

In C you would usually use the preprocessor's #ifdef directives. If you
need more guidance, then you need to provide more details.
 
In C/C++ I know the way to do this, but you cannot always do that in all languages. 
In my current case, I can apply on all archs if needed, but I wondered if there was an easy way, seems not... :-(
Thanks

Cheers,
--
Raphaël Hertzog ◈ Debian Developer

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