clang detectHIPRuntime broken on Fedora,RHEL,SUSE distros #301
Description
These distro's package the hip runtime different from the AMD packages.
The implied ROCM_PATH and HIP_PATH are both the system directory /usr
The hidden file in the AMD package .hipVersion can not be installed to /usr
So this use to find the hip runtime is broken
https://github.com/ROCm/llvm-project/blob/amd-staging/clang/lib/Driver/ToolChains/AMDGPU.cpp#L490
The hip runtime and other rocm packages should have top level cmake options that allow the user to set these value at runtime. For the distro install, these values will be variable per disto but static, well known values.