[Numpy-discussion] Building Windows binaries on OS X

[josef.pktd at gmail.com]

On Mon, Feb 8, 2010 at 9:54 AM, Ralf Gommers
<ralf.gommers at googlemail.com> wrote:
>
>
> On Mon, Feb 8, 2010 at 10:25 PM, <josef.pktd at gmail.com> wrote:
>>
>> On Mon, Feb 8, 2010 at 7:14 AM, Ralf Gommers
>> <ralf.gommers at googlemail.com> wrote:
>> > Hi David and all,
>> >
>> > I have a few questions on setting up the build environment on OS X for
>> > Windows binaries. I have Wine installed with Python 2.5 and 2.6,
>> > MakeNsis
>> > and MinGW. The first question is what is meant in the Paver script by
>> > "cpuid
>> > plugin". Wine seems to know what to do with a cpuid instruction, but I
>> > can
>> > not find a plugin. Searching for "cpuid plugin" turns up nothing except
>> > the
>> > NumPy pavement.py file. What is this?
>> >
>> > Second question is about Fortran. It's needed for SciPy at least, so I
>> > may
>> > as well get it right now. MinGW only comes with g77, and this page:
>> > http://www.scipy.org/Installing_SciPy/Windows says that this is the
>> > default
>> > compiler. So Fortran 77 on Windows and Fortran 95 on OS X as defaults,
>> > is
>> > that right? No need for g95/gfortran at all?
>> >
>> > Final question is about Atlas and friends. Is 3.8.3 the best version to
>> > install? Does it compile out of the box under Wine? Is this page
>> > http://www.scipy.org/Installing_SciPy/Windows still up-to-date with
>> > regard
>> > to the Lapack/Atlas info and does it apply for Wine?  And do I have to
>> > compile it three times, with the only difference the '-arch' flag set to
>> > "SSE2", "SSE3" and "<what's NoSSE?>"?
>>
>> Currently scipy binaries are build with MingW 3.4.5, as far as I know,
>> which includes g77. The latest release of MingW uses gfortran, gcc
>> 4.4.0
>
> You mean gcc 3.4.5, and yes that's what I've got. MinGW itself is at version
> 5.1.6 now, and still include gcc and g77 3.4.5. Not sure where you see gcc
> 4.4.0 but I can easily have missed it on what surely has to be the worst
> download page on SourceForge: http://sourceforge.net/projects/mingw/files/

(I don't think the mingw version is important, it's more important
which gcc is bundled, so I'm sloppy.)

http://sourceforge.net/projects/mingw/files/GCC%20Version%204/Current%20Release_%20gcc-4.4.0/

"view all files"  and header "GCC Version 4"

mingw hompage is a bit scarce on information on release version, at
least I don't find it

>>
>> I think, that, eventually, scipy should switch to gfortran also on
>> Windows. But it might need some compatibility testing.
>> And it would be very useful if someone could provide the Lapack/Atlas
>> binaries, similar to the ones that are on the scipy webpage for mingw
>> 3.4.5. (I don't have a setup where I can build Atlas binaries).
>
> Where are these binaries hidden? All I can find is
> http://scipy.org/Cookbook/CompilingExtensionsOnWindowsWithMinGW

These are the Atlas binaries that I am using with MinGW gcc 3.4.5

http://scipy.org/Installing_SciPy/Windows#head-cd37d819e333227e327079e4c2a2298daf625624

>
>>
>> I haven't switched yet, but, given some comments on the mailinglists,
>> it looks like several windows users are using gfortran without
>> reported problems.
>>
> Makes sense to use the same Fortran compiler everywhere. gfortran works well
> for me on OS X. Thanks Josef.
>
> Cheers,
> Ralf
>
>
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