[cfe-dev] Cannot CMake self-hosted clang on Windows for lack of libxml2

[Ben Boeckel via cfe-dev]

On Tue, Aug 24, 2021 at 10:21:39 -0700, Adrian McCarthy wrote:
> >  Could an issue please be filed about this? CMake tries hard to not break
> > backwards compat, though we're not perfect (and we can't fix what we're
> > not aware of).
> 
> I appreciate that, but I don't think this is a CMake bug.
> 
> In this instance, llvm-mt is supposed to be a cross-platform drop-in
> alternative for mt.exe.  In theory, it shouldn't matter which one CMake
> selects.  And, in fact, the point of a self-hosted build is to use the LLVM
> tool chain.  The fact that llvm-mt's dependencies aren't met on Windows
> seems like an LLVM problem, either in the tool itself or in the
> documentation about how to set up the development environment.

Ah, OK. I'll keep that in mind in case we hear other rumbles of this
happening elsewhere. Maybe it's only a problem when in-dev `llvm-mt` is
"laying around".

> [Rant about the near-infinite size of LLVM's "supported" configuration
> space elided, for now.]

Yeah…I know that story :( .

--Ben