[pydotorg-www] Windows compilers

Thu Jan 27 08:43:46 EST 2022

I see no reason to point to anything but the newest Visual Studio, and any of the v14x toolsets (there are no v15x toolsets to worry about yet, so this is essentially the newest MSVC).

Ideally, I'd rather Python _users_ point package developers to this page so they can release wheels, rather than expecting users to manage package compilation. But if they've ended up with that job then Visual Studio is still the safest recommendation. The Build Tools are only slightly more convenient, but they also obscure the license terms users are working under because they implicitly require the acceptance (and eligibility) of a Visual Studio license.

So for simplicity: install latest Visual Studio, with Python workload and Python Native Development option.

For specificity: install any v14x MSVC toolset for your target platform(s), and the latest Windows SDK (which are all found in the VS installer under Native development). Set $env:PlatformToolset to your toolset version before building if it doesn't detect it.

Currently we're using the v143 toolset for releases, but this can change at any time because it has no impact on the ABI. If someone wants to put that information on the page, feel free, but I'm not volunteering to keep it updated :) The "official" source of truth is https://github.com/python/cpython/blob/main/PCbuild/python.props

Cheers,
Steve

(Apologies for the messed up quotes below, I can't override my work email's settings on this. Use steve.dower at python.org to avoid it.)

-----Original Message-----
From: Marc-Andre Lemburg <mal at egenix.com> 
Sent: Thursday, January 27, 2022 9:48 AM
To: Gerard Higgins <higgins at chalmers.se>; pydotorg-www at python.org; Steve Dower <Steve.Dower at microsoft.com>
Subject: Re: [pydotorg-www] Windows compilers

[You don't often get email from mal at egenix.com. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.]

Hi Gerard,

thanks for the note. I'll try to get more information from our Windows expert on this: Steve Dower.

Steve: How could we best update the page to guide people to the current set of tools ?

https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.python.org%2Fmoin%2FWindowsCompilers&data=04%7C01%7CSteve.Dower%40microsoft.com%7C03b91616d6f14d3b18ce08d9e17a28f3%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637788738672467195%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=LC6b2UKiUd5F3w5n6drH2ObHWQ1RmE7xrGwcMalirsw%3D&reserved=0

The dev guide (still) points to VS2017:

https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdevguide.python.org%2Fsetup%2F%23windows&data=04%7C01%7CSteve.Dower%40microsoft.com%7C03b91616d6f14d3b18ce08d9e17a28f3%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637788738672467195%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=q1OdXgCTf%2BA7gc1bjVcbqbllnuShR1BWiM9Mq47YvH8%3D&reserved=0

but it already mentions the the "workload" installation approach.

Would it be a good idea to point Python users in the same direction or is there a less involved setup/download available ?

Thanks,
--
Marc-Andre Lemburg

On 27.01.2022 08:59, Gerard Higgins wrote:
> Hi,
>
>
>
> I suggest an edit on the windows compilers page 
> https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.python.org%2Fmoin%2FWindowsCompilers&data=04%7C01%7CSteve.Dower%40microsoft.com%7C03b91616d6f14d3b18ce08d9e17a28f3%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637788738672467195%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=LC6b2UKiUd5F3w5n6drH2ObHWQ1RmE7xrGwcMalirsw%3D&reserved=0.
>
> The link to /Microsoft Build Tools for Visual Studio 2019 
> <https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww
> .visualstudio.com%2Fdownloads%2F%23build-tools-for-visual-studio-2019&
> amp;data=04%7C01%7CSteve.Dower%40microsoft.com%7C03b91616d6f14d3b18ce0
> 8d9e17a28f3%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C6377887386724
> 67195%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJB
> TiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=7PilJT%2FsdfD3nNdMWE7AKE1L
> 1TBHzb%2BzOnQ%2Fesxafy8%3D&reserved=0>
> //now goes to Visual Studio 2022. I suggest linking to
> https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmy.v
> isualstudio.com%2FDownloads%3Fq%3Dvisual%2520studio%25202019%26wt.mc_i
> d%3Do~msft~vscom~older-downloads&data=04%7C01%7CSteve.Dower%40micr
> osoft.com%7C03b91616d6f14d3b18ce08d9e17a28f3%7C72f988bf86f141af91ab2d7
> cd011db47%7C1%7C0%7C637788738672467195%7CUnknown%7CTWFpbGZsb3d8eyJWIjo
> iMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp
> ;sdata=Cle0FmaIrr4XI4u44k8PfGoi6WYpradZK7eg2onfHew%3D&reserved=0
> and recommending version 16.0 (in the latest version it's difficult to 
> find the
> C++ build tools./
>
>
>
> All the best,
>
> Gerard
>
>
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>

--
Marc-Andre Lemburg
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