[LLVMdev] Purpose of LLVM_ENABLE_LIBCXX and LLVM_ENABLE_LIBCXXABI

[Renato Golin]

On 28 July 2015 at 16:57, Schlottke-Lakemper, Michael
<m.schlottke-lakemper at aia.rwth-aachen.de> wrote:
> -DCLANG_DEFAULT_OPENMP_RUNTIME=libomp
>
> at configuration time when building LLVM. That way things would not break for existing users with unsupported systems while making things for users like us *much* easier :)

This is possible, but not yet done for compiler-rt / libc++. It needs
support in the driver to actually change the default. Shouldn't be too
hard, but we need something that can grow into architectural options
as well (like GCC), to make the life of distributions easier, so we
can't just hack up something that will work "just" for rt/libc++.

cheers,
--renato