Add (e)z80-clang compilers.

[adriweb]

These clang + LLVM backends are not upstreamed, so it's a bit customized.

I've tested locally and the binaries get installed as expected.

See also compiler-explorer/compiler-explorer#7546

[partouf]

These didn't install last night, will have to investigate what's going on

[adriweb]

Ah, that's odd considering I tested it fine locally and even the frontend worked, and I don't believe I manually changed anything...

Anyway there's some double bin folder in the path, from the error log, oops?
sudo: z80-clang-15.0.7/bin/bin/clang++: command not found
Maybe it's just the check_exe that needs to have bin/ removed.

Note that clang++ is a symlink to clang but I doubt this changes anything.

[mattgodbolt]

Right, the two that fail are:

Failed:
  compilers/c++/z80-clang 15.0.0
  compilers/c++/z80-clang 15.0.7

I'm taking a quick look now.

[mattgodbolt]

yeah; looks like you're unpacking by telling it the dir is ../bin/ - the check_exe is relative to this directory, so a check_exe of bin/clang means it's doing bin/bin/clang. I'll poke about and either change the unpack dir or fix the check_exe

[mattgodbolt]

Looks like the tarball only has clang and clang++ -- does it really need to be in a bin directory?

[mattgodbolt]

bollo:~/d/c/infra (main|✔) $ curl -sL https://github.com/CE-Programming/llvm-project/releases/download/nightly-rebase-v15/z80-clang-v1500-ubuntu-22.04Release.tar.gz | tar ztvf -

-rwxr-xr-x adriweb/staff   187 2025-04-08 03:49 ._clang
tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.quarantine'
-rwxr-xr-x adriweb/staff 88274976 2025-04-08 03:49 clang
lrwxr-xr-x adriweb/staff        0 2025-04-08 17:57 clang++ -> clang

[mattgodbolt]

I'm going to assume so, if only to make it look a bit more like a "normal" installation.