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To: python-list@python.org
From: Mark Lawrence <breamoreboy@yahoo.co.uk>
Subject: Re: problem building python 3.5 extensions for windows
Date: Mon, 21 Sep 2015 14:27:24 +0100
References: <55FFFE50.8090703@chamonix.reportlab.co.uk>
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On 21/09/2015 13:55, Robin Becker wrote:
> I have installed VS2015; this is the full version and was a great deal
> of trouble to install. First time out it started whining and I had to
> 'repair' it.
>
> Anyhow after the 'repair' it said all was OK and no complaints.
>
> However, when I try to use it I don't see options for starting C++
> projects, but instead only C#.
>
> I get an error like this trying to build for x86 or amd64
>
>           | building 'reportlab.lib._rl_accel' extension
> Stderr:  | error: Unable to find vcvarsall.bat

The most reported problem trying to build anything on Windows that is 
Python related.

>
> There is a folder "C:\Program Files (x86)\Microsoft Visual Studio
> 14.0\VC", but it doesn't contain any batch scripts. Document
> https://msdn.microsoft.com/en-us/library/x4d2c09s.aspx claims to be
> about VS2015, but has as example
>
> cd "\Program Files (x86)\Microsoft Visual Studio 12.0\VC"
>
> which is presumably not for VS2015.

Correct, the folder you referenced first should contain the batch file.

>
> Any ideas how to get this to work? Should I try a full reinstall of
> VS2015? I can start the VS2015 Developer command prompt, but it doesn't
> then know about the "cl" command.

I'd be inclined to go for the reinstall, painful as that might be.  I've 
tried finding the batch file as a separate download but there's just too 
many hits about "download Visual Studio".

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence