[Numpy-discussion] draft release guide

[josef.pktd at gmail.com]

On Wed, Mar 24, 2010 at 3:31 PM, Francesc Alted <faltet at pytables.org> wrote:
> A Wednesday 24 March 2010 15:38:58 David Cournapeau escrigué:
>> Oh, it is not that easy :)
>>
>> First, for some reason, the mingw-w64 project does not provide 64
>> hosted compilers, and since pushing for mingw cross compilation
>> support in distutils would redefine the meaning of insanity, I build
>> my gcc. Since building gcc on windows is not a fun ride either, you
>> have to build it on unix (I have the scripts on my github account:
>> github.com/cournape/).
>
> Mmh, not sure about what you mean by hosted compiler, but there is certainly a
> native compiler package for Win64:
>
> mingw-w64-bin_x86_64-mingw_20100322_sezero.zip
>
> It comes with gcc, g++ and gfortran 4.4.4.  gdb support is also there.  So it
> seems like a pretty complete toolset for windows amd64.
>
> With it, and with some fixes in numpy sources (very few), I achieved to pass
> the build phase.  I can provide the patch in case someone is interested.  The
> generated extensions are:
>
> 24/03/2010  19:34         1.492.313 multiarray.pyd
> 24/03/2010  19:34           124.866 multiarray_tests.pyd
> 24/03/2010  19:34           453.377 scalarmath.pyd
> 24/03/2010  19:34         1.079.827 umath.pyd
> 24/03/2010  19:34           121.651 umath_tests.pyd
> 24/03/2010  19:34           304.014 _sort.pyd
>
> which looks good to my eyes.
>
> Now, when I try to generate the installable package I'm in trouble again:
>
> $ python setup.py bdist
> [...]
>  File "C:
> \Users\francesc\Desktop\NumPy\1.4.x\numpy\distutils\command\config.py"
> , line 56, in _check_compiler
>    self.compiler.initialize()
>  File "C:\Python26_64\lib\distutils\msvc9compiler.py", line 359, in
> initialize
>    vc_env = query_vcvarsall(VERSION, plat_spec)
>  File "C:\Python26_64\lib\distutils\msvc9compiler.py", line 275, in
> query_vcvar
> sall
>    raise ValueError(str(list(result.keys())))
> ValueError: [u'path']
> [...]
>
> So, it looks like either numpy or python cannot determine that the used
> compiler is mingw instead of msvc9.  However, when I try to specify mingw
> explicitly, I get the next error:
>
> $ python setup.py bdist --compiler=mingw32
> Running from numpy source directory.
> Forcing DISTUTILS_USE_SDK=1
> usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
>   or: setup.py --help [cmd1 cmd2 ...]
>   or: setup.py --help-commands
>   or: setup.py cmd --help
>
> error: option --compiler not recognized

For some similar problems, which I don't remember exactly, I needed to
create the dist in the same command as the build, e.g.

python setup.py build --compiler=mingw32 bdist

I don't know if this works in your case, I have the compiler specified
in distutils.cfg

Josef

>
> Someone could tell me why distutils can be told to use mingw32 compiler for
> the build stage but not for bdist?  What is more, why the need for a compiler
> for bdist if numpy is already built? I feel that I'm almost there, but some
> piece still resists...
>
> --
> Francesc Alted
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