h-vetinari wrote:
Thanks for the in-depth response, and trying to help fix this!
> Ideas for causes for it not working:
It's none of these, unfortunately.
> I ask you to send a reproducer that works without conda. If you cannot
> reproduce it without conda, I am assuming the problem is with conda.
It's not a function of conda the tool, but of packaging LLVM for the purpose of
shipping it as pre-compiled binaries. These need to be split into components
that may depend on each other, because it's imperative that things like
`libllvm`, `clang`, `compiler-rt` etc. are shared across all their dependents,
and not (for example) that a packaged `flang` repackages the already-existing
bits again. Plus, as mentioned, timing constraints in CI.
So the reproducer is pretty simple ("fully stand-alone components").
* build `../llvm` and install into `$PREFIX`
* build `../runtimes` (using
`-DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind"`) and install into
`$PREFIX`
* build `../clang` (while reusing the bits from llvm/libcxx in `$PREFIX`) and
install into `$PREFIX`
* build `../compiler-rt` (while reusing the bits from clang in `$PREFIX`) and
install into `$PREFIX`
* build `../mlir` (while reusing the bits from llvm in `$PREFIX`) and install
into `$PREFIX`
* build `../flang` (while reusing all the other bits in `$PREFIX`) and install
into `$PREFIX`
* build `../flang-rt`
If you want I can work out a full script that does this, but this is why we
might arrive in a different place, conceptually speaking.
https://github.com/llvm/llvm-project/pull/110217
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