[Numpy-discussion] can't build numpy 1.2.0 under python 2.6 (windows-amd64) using VS9

Hanni Ali hanni.ali@gmail....
Thu Nov 20 11:54:54 CST 2008


Hi All,

I have reached the point where I really need to get some sort of
optimised/accelerated BLAS/LAPACK for windows 64 so have been trying a few
different things out to see whether I can get anything usable, today i
stumbled across this:

http://icl.cs.utk.edu/lapack-for-windows/index.html

Has anyone used this before, I plan on seeing where it takes me in the
morning, so I will report back if i get it working with numpy.

Regards,

Hanni


2008/10/12 Michael Abshoff <michael.abshoff@googlemail.com>

> David Cournapeau wrote:
>
> > Michael Abshoff wrote:
>
> Hi David,
>
> >> Sure, but there isn't even a 32 bit gcc out there that can produce 64
> >> bit PE binaries (aside from the MinGW fork that AFAIK does not work
> >> particularly well and allegedly has issues with the cleanliness of some
> >> of the code which is allegedly the reason that the official MinGW people
> >> will not touch the code base) .
> >
> > The biggest problem is that officially, there is still no gcc 4 release
> > for mingw. I saw a gcc 4 section in cygwin, though, so maybe it is about
> > to be released. There is no support at all for 64 bits PE in the 3 serie.
>
> Yes, you are correct and I was wrong. I just checked out the mingw-64
> project and there has been a lot of activity the last couple month,
> including a patch to build pthread-win32 in 64 bit mode.
>
> > I think binutils officially support 64 bits PE (I can build a linux
> > hosted binutils for 64 bits PE with x86_64-pc-mingw32 as a target, and
> > it seems to work: disassembling and co). gcc 4 can work, too (you can
> > build a bootstrap C compiler which targets windows 64 bits IICR). The
> > biggest problem AFAICS is the runtime (mingw64, which is indeed legally
> > murky).
>
> I would really like to find the actual reason *why* the legal status of
> the 64 bit MinGW port is murky (To my knowledge it has to do with taking
> code from the MS Platform toolkit - but that is conjecture), so I guess
> I will do the obvious thing and ask on the MinGW list :)
>
> >> Ok, that is a concern I usually do not have since I tend to build my own
> >> Python :).
> >
> > I would say that if you can build python by yourself on windows, you can
> > certainly build numpy by yourself :) It took me quite a time to be able
> > to build python on windows by myself from scratch.
>
> Sure, I do see your point.
>
> Accidentally someone posted about
>
>    http://debian-interix.net/
>
> on the sage-windows list today. It offers a gcc 4.2 toolchain and AFAIK
> there is at least a patch set for ATLAS to make it work on Interix.
>
> > cheers,
> >
> > David
>
> Cheers,
>
> Michael
>
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