Re: [boost] `b2 toolset=clang-win` now works on Appveyor

Subject: Re: [boost] `b2 toolset=clang-win` now works on Appveyor
From: Peter Dimov (lists_at_[hidden])
Date: 2018-11-17 20:00:12

Edward Diener wrote:
> But if I invoke 'b2 toolset=clang-win-6.0' against some test jam file with 
> a user-config.jam file of 'using clang-win : 6.0 : 
> C:/Utilities/LLVM/601/x32/bin/clang-cl ;' I constantly get:
>
> C:\Program Files (x86)\Microsoft Visual 
> Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include\yvals_core.h(294,5): 
> error: STL1000: Unexpected compiler version, expected Clang 7 or newer.
>     #error STL1000: Unexpected compiler version, expected Clang 7 or 
> newer.

That's a feature of the new MSVC 15.9. 15.8 worked with clang 6.

> Even if I add a 'using msvc : 14.0 ;' to my user-config.jam the same 
> problem occurs. It seems as if clang-win always uses the latest version of 
> vc++, which of course does not work with an earlier version of clang, as 
> the error message shows.

Which version of VS is used by clang-cl.exe is not determined by 
clang-win.jam, it's decided by clang-cl.exe itself. You could 
try -fmsc-version=1900, I suppose.