[CMake] Why does CMake 3.9.0 open VS2017 when targeting 2013 after installing 2017... sigh.

[Robert Maynard]

> Can't that be set by passing the toolset with a -T

That is what I was trying to say with my last sentence. You will need
to use CMake 3.12 to have support for specifying the minor toolset
version though.
On Thu, Aug 16, 2018 at 3:31 PM J Decker <d3ck0r at gmail.com> wrote:
>
>
> On Thu, Aug 16, 2018 at 9:18 AM Brian Davis <bitminer at gmail.com> wrote:
>>
>>
>>
>> On Wed, Aug 15, 2018 at 11:58 AM, Robert Maynard <robert.maynard at kitware.com> wrote:
>>>
>>> The MSVC / CUDA support recently has been very challenging to keep track of. In general CUDA will only support a single patch release of MSVC, and given how MSVC 2017 doesn't easily allow rollbacks and has a pretty aggressive update policy ( compared to older MSVC versions ) causes lots of pain. This in general has been a community wide MSVC+CUDA issue.
>>>
>>> CUDA 8 has zero support for VS2017 ( https://docs.nvidia.com/cuda/archive/8.0/cuda-installation-guide-microsoft-windows/index.html )
>>> CUDA 9.0 and 9.1 only supports VS 2017 15.0 (https://docs.nvidia.com/cuda/archive/9.0/cuda-installation-guide-microsoft-windows/index.html, https://docs.nvidia.com/cuda/archive/9.1/cuda-installation-guide-microsoft-windows/index.html)
>>> CUDA 9.2 only supports VS 2017 15.0 and 15.6
>>>
>>> When using MSVC 2017 and CUDA you will need to specify an explicit host side compiler with -T version=15.## including the minor version ( https://cmake.org/cmake/help/v3.12/release/3.12.html#id3 ).
>>
>>
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> Can't that be set by passing the toolset with a -T ? like -T "v120_xp"    or -T "v120"
>
> This is an article about side-by-side toolsets https://blogs.msdn.microsoft.com/vcblog/2017/11/15/side-by-side-minor-version-msvc-toolsets-in-visual-studio-2017/  but it looks like it only goes back to 2015...
>
> (and sorry to ramble a bit)
> Slightly off topic; but I ran into a feature of the new optimizer that shuffles commands.... I had a critical section lock that it ended up clearing the locking bit, before releasing the other value; can defiantly see lots of code breaking from that; firefox wants to only build with 15.6 but community is only 15.5 or 15.8 preview...  (I fixed the codea dding 'volatile , and referencing the other value with a computation that resulted with 0 instead.)
>
> Sometimes code is in a certain order for specific reasons :) Sometims, it can be shuffled ....   (a=1;b=2;) ~~ (b=2;a=1) (same result different order)
>
>
>
>>
>> sigh... of course (though be careful with the term does not and cannot and zero support - I am a thinkin I could get CMake to support CUDA 8 in VS2017 - if I realy wanted to - I mean it's not realy VS/MSVC doing the compiling is it?-rhetorical).  This is making the case for what I had to do in the 2.8 days (well also again when NVIDIA could not decide on where to put their.... stuff in the file system and CMake was always one version or so behind) and roll my own CMake cuda support... yes this happened... and it could again.  Time to look back into my old svn tree.  sweet... kickin it with svn again the good old days.
>>
>>
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