[LLVMdev] RFC: LLVM should require a working C++11 <thread>, <mutex>, and <atomic>

[Óscar Fuentes]

Chandler Carruth <chandlerc at gmail.com> writes:

> AKA: MinGW + win32threads is holding LLVM (and all of its subprojects)
> back. We need to stop supporting this host platform.
>
> I'm aware of essentially 2 reasonably important use cases for supporting
> MinGW + win32threads:

I suppose that you are talking about MinGW (www.mingw.org) all along
and not about MinGW-w64 (www.mingw-w64.org) which supports the features
you are missing.

> 1) Sane host toolchain on Windows that doesn't require downloading MSVC.
> (I'm dubious about the value of this one...)

Oh, well. You are talking about "everything that is not MSVC++". Ok.

> 2) Cross-compiling a Windows clang.exe (and other tools) from a Linux (or
> other host) box.

I have no idea how cross-compiling from other OS can solve shortcomings
on the *runtime* libraries of a toolchain.

[snip]

> I *really* don't want to spend lots of time going
> there because it seems like a low-value platform, but we can.

Thanks, I knew that you consider MinGW* "low-value" all along. MinGW-w64
is well ahead of MSVC++ on C++ language and library support, and it is
very likely that it will remain that way, but you take every chance to
bad-mouth it to promote MSVC++ support on LLVM/Clang.

[snip]