[Numpy-discussion] mingw-w64 tutorial ?

Robin robince@gmail....
Sun Aug 22 03:35:14 CDT 2010

On Sun, Aug 22, 2010 at 8:41 AM, Sebastian Haase <seb.haase@gmail.com> wrote:
>>>> Do you know if that contains a C++ compiler ?  The first page before
>>>> it starts the actual download has "Visual C++ Compilers" grayed out
>>>> ... !?
>>>> -Sebastian
>>> Ok, apparently I had to install the "dot NET Framework 4" from
>>> http://msdn.microsoft.com/en-us/netframework/aa569263.aspx
>>> first, before then the C++ could be installed.
>>> But now setup.py still complains:
>>>       error: Unable to find vcvarsall.bat
>>> and I think it is looking for
>>> C:\Program Files (x86)\Microsoft Visual Studio 9.0
>>> while that file got installed in
>>> C:\Program Files (x86)\Microsoft Visual Studio 10.0
>>> I don't know how to get the "log.debug" messages from the setup.py
>>> script activated...
>>> ?

My limited understanding is that there are two different versions of
microsoft stuff at the moment:
VS 2008 which goes with SDK 3.5 and VS 2010 which goes with SDK 4.0. I
think Python is built with 2008 so that might be easier to try. I'm
not sure though.

While the SDK contains some compilers I think the easiest way to get
the compilers working is to first install the VS express edition,
which is 32 bit, and then install the SDK which provides 64 bit
support. Here are some instructions I lifted from the Matlab website
(I haven't tried building Python extensions yet but I was able to
embed Python with this setup).

To install Visual Studio 2008 Express Edition with all required components:
1. Install Microsoft Visual Studio 2008 Express Edition. The main
Visual Studio 2008 Express installer is available from:
This package can be installed using the default options.

2. Install the Microsoft Windows SDK. The Microsoft Windows SDK is
available by searching Microsoft's download site, or by going directly

Download the Windows Server 2008 & .NET 3.5 SDK. Do not install beta
or 'Release Candidate' (RC) versions. Also do NOT install "Microsoft
Windows SDK for Windows 7 and .NET Framework 4" (version 7.1); if you
want to use a 7.x version choose the "Microsoft Windows SDK for
Windows 7 and .NET Framework 3.5 SP1".

2.1. While installing the SDK, you must select "x64 Compilers and
Tools". For example, in the SDK installer above:
On screen "Installation Options"
Select "Developer Tools"->"Visual C++ Compilers".
This item has the Feature Description "Install the Visual C++ 9.0
Compilers. These compilers allow you to target x86, x64, IA64
processor architectures."

3. To verify that you have all installed components, check that the
Microsoft SDK contains the "amd64" version of the C/C++ compiler
"cl.exe". This is usually installed into

C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\bin\amd64\cl.exe



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