[Debian-science-sagemath] fpylll: dependency or dependencee of Sage ?

[Jerome BENOIT]

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Hi, thanks for your prompt reply.

On 17/10/16 00:10, François Bissey wrote:
> Well sage needs fpylll at runtime but not at build time.

> fpylll can be configured to work “standalone” or with sage.

Is the configuration taking place at building time or on the fly
at running time ?


> The standalone configuration doesn’t work from sage.
> If fpylll needs to be configured with sage, sage has to be
> installed. It needs the location of various .pxd and headers
> files to do so.
> That’s what the:
> if have_sage:
>    from sage.env import SAGE_SRC
>    fplll["include_dirs"].append(SAGE_SRC)
>    config_pxi.append("DEF HAVE_SAGE=True”)
> 
> does. Instead of import SAGE_SRC we could use SAGE_LIB for
> a sage install rather sage’s sources. SAGE_LIB should
> point to sage’s location in python’s site-packages folder.

Jerome

> 
> François
> 
>> On 17/10/2016, at 11:56, Jerome BENOIT <calculus at rezozer.net> wrote:
>>
> Hello Forum,
> 
> I am on my way to package fpylll.
> 
> I thought that Sage depends on fpylll, but after reading the setup.py of fpylll,
> it rather appears that it is the reverse. We read:
> 
> # SAGE
> have_sage = False
> 
> try:
>    import sage
>    have_sage = True
> except ImportError:
>    pass
> 
> if have_sage:
>    from sage.env import SAGE_SRC
>    fplll["include_dirs"].append(SAGE_SRC)
>    config_pxi.append("DEF HAVE_SAGE=True")
> else:
>    config_pxi.append("DEF HAVE_SAGE=False")
> 
> 
> What is going on here ?
> 
> 
> Thanks in advance,
> Jerome
> 
>>
>> _______________________________________________
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>> Debian-science-sagemath at lists.alioth.debian.org
>> https://lists.alioth.debian.org/mailman/listinfo/debian-science-sagemath
> 

- -- 
Jerome BENOIT | calculus+at-rezozer^dot*net
https://qa.debian.org/developer.php?login=calculus@rezozer.net
AE28 AE15 710D FF1D 87E5  A762 3F92 19A6 7F36 C68B
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