Merge pull request #2036 from npmiller/nicolas/find-rocm

[HIP] Take ROCm path from environment if available

Author: pbalcer

README.md

@@ -145,7 +145,7 @@ List of options provided by CMake:
 | UR_DEVICE_CODE_EXTRACTOR | Path of the `clang-offload-extract` executable from the DPC++ package, required for CTS device binaries | File path | `"${dirname(UR_DPCXX)}/clang-offload-extract"` |
 | UR_DPCXX_BUILD_FLAGS | Build flags to pass to DPC++ when compiling device programs | Space-separated options list | `""` |
 | UR_SYCL_LIBRARY_DIR | Path of the SYCL runtime library directory to build CTS device binaries | Directory path | `""` |
-| UR_HIP_ROCM_DIR | Path of the default ROCm HIP installation | Directory path | `/opt/rocm` |
+| UR_HIP_ROCM_DIR | Path of the default ROCm HIP installation | Directory path | `$ENV{ROCM_PATH}` or `/opt/rocm` |
 | UR_HIP_INCLUDE_DIR | Path of the ROCm HIP include directory | Directory path | `${UR_HIP_ROCM_DIR}/include` |
 | UR_HIP_HSA_INCLUDE_DIRS | Path of the ROCm HSA include directory | Directory path | `${UR_HIP_ROCM_DIR}/hsa/include;${UR_HIP_ROCM_DIR}/include` |
 | UR_HIP_LIB_DIR | Path of the ROCm HIP library directory | Directory path | `${UR_HIP_ROCM_DIR}/lib` |

source/adapters/hip/CMakeLists.txt

@@ -8,8 +8,13 @@ set(TARGET_NAME ur_adapter_hip)
 # Set default UR HIP platform to AMD
 set(UR_HIP_PLATFORM "AMD" CACHE STRING "UR HIP platform, AMD or NVIDIA")
 
+set(DEFAULT_ROCM_PATH "/opt/rocm")
+if(DEFINED ENV{ROCM_PATH})
+  set(DEFAULT_ROCM_PATH $ENV{ROCM_PATH})
+endif()
+
 # Set default ROCm installation directory
-set(UR_HIP_ROCM_DIR "/opt/rocm" CACHE STRING "ROCm installation dir")
+set(UR_HIP_ROCM_DIR "${DEFAULT_ROCM_PATH}" CACHE STRING "ROCm installation dir")
 # Allow custom location of HIP/HSA include and HIP library directories
 set(UR_HIP_INCLUDE_DIR "${UR_HIP_ROCM_DIR}/include" CACHE PATH
   "Custom ROCm HIP include dir")