How do I add openmp support when I have built hipcc

[JiaJiDuan]

trafficstars

Hi,I have built all the hipcc related libraries from tag rocm-5.7.0（llvm-project ROCm-Device-Libs ROCm-CompilerSupport ROCT-Thunk-Interface ROCR-Runtime HIPCC clr）. I want to add openmp support but don't want to build from scratch.
So what should I do.
My current cmake configuration for llvm-project is cmake -S llvm -B build -G Ninja -DCMAKE_INSTALL_PREFIX=$ROCM_PATH -DLLVM_TARGETS_TO_BUILD="AMDGPU;X86" -DLLVM_ENABLE_PROJECTS="llvm;clang;lld;compiler-rt;clang-tools-extra" -DCMAKE_BUILD_TYPE=Release