[Nix-dev] Re: libgmp impurity

[Tony White]

2009/6/29 Marc Weber <marco-oweber at gmx.de>:
> On Mon, Jun 29, 2009 at 06:58:10PM +0200, Peter Simons wrote:
>> The gmp library in stdenv-updates uses plain GNU config.guess now. This
>> should remedy overly aggressive choice of optimizer flags.
>>
>> My understanding is that there is no trivial solution to the underlying
>> problem, though. Configure scripts usually guess a lot, and that's
>> [..]
>
> Maybe we should talk about solutions even if we can't implement them at
> the moment?
>
> a) patch the config.guess script.
>     can be easy but won't catch everything
>
> b) patch the stuff config.guess is using
>     requires patching gcc and assembler because the CPUID processor
>     instruction can't be faked. Thus gcc and the assemblers must be
>     taught to rewrite this instruction by a set of instruction returning a
>     constsant but similar string.
>
> c) cross compile everything from x86 to x86 or such.
>     I guess too much work. cross compiling can cause a lot of problem
>     because the majority of packages isn't cross compiled often except the
>     most basic ones (?)
>
> Can you think about other solutions?
>
> Marc Weber
> _______________________________________________
> nix-dev mailing list
> nix-dev at cs.uu.nl
> https://mail.cs.uu.nl/mailman/listinfo/nix-dev
>

Hi Marc,
How about moving upstream with it and being polite. :)

 	http://gmplib.org/mailman/listinfo/gmp-discuss

Looking here :

http://gmplib.org/#FUTURE

It's quite an active project, they have quite a few ambitious goals
and their focus seems to be on performance.

Sorry if I'm being too obvious, just a thought,

Tony