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Subject: Re: [Boost-build] Need toolset for Clang with Microsoft CodeGen (aka clang/c2)
From: Edward Diener (eldiener_at_[hidden])
Date: 2015-12-10 22:20:33

On 12/10/2015 5:03 PM, Beman Dawes wrote:
> See
> I've been testing clang/c2 both via the Visual Studio IDE and from the
> command line. While it is just a preview release, it already works well
> enough that having a Boost.Build toolset would be quite useful.
> It would be great if someone could contribute such a toolset!

I contributed a general Windows toolset for clang-cl, which was actually
taken from another user's post. The toolset is called clang-win.jam.
This was never integrated into the general clang.jam because of the
difficulty under Windows of distinguishing between the clang/gcc and
clang-cl implementations of clang on Windows. Furthermore because I did
not believe that attempting to replicate the broken VC++ preprocessor in
clang-cl in all situations is a viable way of using that compiler I did
not pursue that sort of integration in Boost build, even if I were
capable of doing it ( which I am not because my level of understanding
Boost build is pretty low ).

Given the assumption that clang/c2 uses the clang preprocessor and not
the broken VC++ imitation clang-cl preprocessor I would also like to see
a clang/c2 implementation in Boost build to test out libraries under
Windows using it. But someone else with a much greater understanding of
Boost build than mine needs to step and provide it, perhaps using what
is already in clang-win.jam.

While clang/gcc on Windows is a very strong and relibale compiler, its
linker is still broken in numerous situations where the Windows gcc
linker is working properly. I just haven't had the time to present
those situations to clang on their developers mailing list. Therefore if
clang/c2 on Windows works better overall it would be great.

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