CMake `enable_language(HIP)` fails with test program compile error

[atafra]

enable_language(HIP) in CMake 3.22.3 and 3.23.0-rc3 fails when linking the test program using ROCm 5.0.2 on Ubuntu 20.04:

-- The HIP compiler identification is Clang 14.0.0
-- Detecting HIP compiler ABI info
-- Detecting HIP compiler ABI info - failed
-- Check for working HIP compiler: /opt/rocm-5.0.2/llvm/bin/clang++
-- Check for working HIP compiler: /opt/rocm-5.0.2/llvm/bin/clang++ - broken
CMake Error at /snap/cmake/1049/share/cmake-3.23/Modules/CMakeTestHIPCompiler.cmake:65 (message):
  The HIP compiler

    "/opt/rocm-5.0.2/llvm/bin/clang++"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /home/user/project/build/CMakeFiles/CMakeTmp
    
    Run Build Command(s):/usr/bin/ninja cmTC_74f12 && [1/2] Building HIP object CMakeFiles/cmTC_74f12.dir/testHIPCompiler.hip.o
    [2/2] Linking HIP executable cmTC_74f12
    FAILED: cmTC_74f12 
    : && /opt/rocm-5.0.2/llvm/bin/clang++ --cuda-host-only  --offload-arch=gfx1030  CMakeFiles/cmTC_74f12.dir/testHIPCompiler.hip.o -o cmTC_74f12   && :
    clang-14: error: '-fopenmp-targets' must be used in conjunction with a '-fopenmp' option compatible with offloading; e.g., '-fopenmp=libomp' or '-fopenmp=libiomp5'
    ninja: build stopped: subcommand failed.
    
    

  

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:126 (enable_language)

The same error happens with a completely empty CMake project. The -fopenmp error is very strange because I don't see OpenMP referenced anywhere else. Building and running the HIP samples (which simply use find_package(hip)) work fine, so the issue seems to be limited to the enable_language feature. Could this be a bug in CMake, perhaps an incompatibility with the latest ROCm? I didn't try an older version.

[skyreflectedinmirrors]

For what it's worth, I've hit this issue in ROCm 5.0 and it should be resolved in 5.1

[atafra]

Thanks! With ROCm 5.1.1 it does not fail here anymore but now it fails when linking. For example:

/snap/cmake/1082/bin/cmake -E cmake_link_script CMakeFiles/HIPOnlyMathFunctions.dir/link.txt --verbose=1
/opt/rocm-5.1.1/llvm/bin/clang++  --offload-arch=gfx1030 CMakeFiles/HIPOnlyMathFunctions.dir/main.hip.o -o HIPOnlyMathFunctions 
clang-14: warning: argument unused during compilation: '--offload-arch=gfx1030' [-Wunused-command-line-argument]
ld.lld: error: undefined symbol: hipMalloc

[ppanchad-amd]

@atafra Can you please test with latest ROCm 6.0.2 (HIP 6.0.32831) to see if it fails linking? Thanks!