[libclc] [llvm] [libclc] Support LLVM_ENABLE_RUNTIMES when building (PR #141574)

[Joseph Huber via llvm-commits]

jhuber6 wrote:

> I'll need to look into that - maybe we can talk offline. Since `libclc` is used by downstream toolchains I feel it'll be hard to significantly change how it's built or presented to the host. We could support two methods of building but that would get sticky pretty quickly.

Sure, feel free to email me or ping me on the LLVM Discord.

https://github.com/llvm/llvm-project/pull/141574