[llvm] [ORC-RT] Initial check-in for a new, top-level ORC runtime project. (PR #113499)

[Lang Hames via llvm-commits]

lhames wrote:

> Are multi-target builds possible when using `llvm-project/runtimes` as the source directory? Are there any other options that I need to pass?

Having done a bit more reading, and chatting with @etcwilde, it looks like `llvm-project/runtimes` is for single target builds and we expect some higher level script to invoke this for each target. Using `llvm-project/llvm` as the source project gets us some kind of multi-target support, but I'm struggling to hold it right: Ideally I want to be able to do a multi-target build of orc-rt with either the host compiler or the just-built compiler, depending on config. Is that doable with the existing CMake machinery?


https://github.com/llvm/llvm-project/pull/113499