Is it required to build LLVM in order to build hipSYCL?

Question

I'm running Centos 7 and am trying to build hipSYCL (see here)

The issue is that hipSYCL needs to have cmake info from the LLVM build (via the LLVM_DIR cmake variable). This is problematic for me because building LLVM requires a massive 35Gb for the libraries and exes. I don't have that much memory to spare.

I did find a build of llvm-toolset-8.0 online for Centos 7 and installed it, but to my surprise, that didn't seem to work with LLVM_DIR because there's no cmake files (since I didn't build it locally).

So, my question would be, is there a way to build hipSYCL using pre-built LLVM-clang?

If I'm missing or misunderstanding something, I'd appreciate any help.

Answer 1

LLVM publishes the necessary cmake files, and the binary OS packages I've seen include it, generally in a directory called /usr/lib/llvm*/lib/cmake and in a package called something like llvm-*-dev.