Help with some mpn function to package flint using gmp instead of mpir

[Fredrik Johansson]

Hi Paulo,

The next release of flint (2.4) will support gmp out of the box. The
git version of flint already does this.

Best regards,
Fredrik


On Wed, Jul 31, 2013 at 4:35 PM, Paulo César Pereira de Andrade
<paulo.cesar.pereira.de.andrade at gmail.com> wrote:
>   Hi,
>
>   I have been packaging sagemath since early sagemath 3.x in Mandriva,
> and recently have been packaging in Fedora also. Only yesterday I had
> time to start working on packaging sagemath 5.10, but learned that now
> it requires flint 2.3, and that (flint 2.3) uses several mpir internals not
> available in gmp.
>
>   I cannot easily build flint using mpir if willing to use system packages,
> because everything else uses gmp, and system wide, mpir is not an
> alternative to gmp, that is, it is not the owner of gmp headers, so, there
> are conflicts starting there...
>
>   So, my initial patch looks like this:
>
> -            mpn_com_n(arr, ptr->_mp_d, size);
> +            mpn_copyi(arr, ptr->_mp_d, size);
> +            mpn_com(arr, ptr->_mp_d, size);
>
> -            mpn_com_n(p, p, l);
> +            mpn_com(p, p, l);
>
> -         mpn_neg_n(coeffs_f[i], coeff, size_j);
> +         mpn_neg(coeffs_f[i], coeff, size_j);
>
> but I am unsure how to patch the next ones:
>
> /home/pcpa/rpmbuild/BUILD/flint-2.3/libflint.a(fft_mulmod_2expp1.o):
> In function `_fft_mulmod_2expp1':
> /home/pcpa/rpmbuild/BUILD/flint-2.3/fft/mulmod_2expp1.c:124: undefined
> reference to `mpn_mulmod_2expp1'
>
> maybe I can just cut&paste these?
> http://gmplib.org/list-archives/gmp-devel/2010-January/001446.html
>
> the next one I am not sure, but could just cut&paste mpir implementation
> in flint source as a patch, as the implementation appears to be small/simple
> enough:
>
> /home/pcpa/rpmbuild/BUILD/flint-2.3/libflint.a(fft_butterfly_lshB.o):
> In function `butterfly_lshB':
> /home/pcpa/rpmbuild/BUILD/flint-2.3/fft/butterfly_lshB.c:59: undefined
> reference to `__gmpn_sumdiff_n'
>
> Probably there will be more, but so far I got make check to pass
> a lot of tests up to the above link failures:
>
> $ grep PASS log.txt | wc -l
> 222
>
>   This is still very early work in progress to package flint 2.3, but
> if you have some experience with rpm, here is the "prototype" srpm
> at the time of writing this email:
> http://pcpa.fedorapeople.org/flint-2.3-1.fc20.src.rpm
>
> Thanks,
> Paulo
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