GPU: Add GPUCA_OPENCL_CLANGBIN setting to force OpenCL spirv clang ve…

…rsion

GPU/GPUTracking/Standalone/cmake/config.cmake

@@ -20,7 +20,8 @@ set(CONFIG_GL3W 0)
 set(CONFIG_O2 1)
 set(BUILD_DEBUG 0)
 set(GPUCA_NO_FAST_MATH 0)
-#set(CUDA_GCCBIN c++-8.3.0)
+#set(GPUCA_CUDA_GCCBIN c++-8.3.0)
+#set(GPUCA_OPENCL_CLANGBIN clang-15)
 #set(HIP_AMDGPUTARGET "gfx906;gfx908;gfx90a")
 set(HIP_AMDGPUTARGET "default")
 #set(CUDA_COMPUTETARGET 86 89)

dependencies/FindO2GPU.cmake

@@ -75,9 +75,9 @@ if(ENABLE_CUDA)
     set(CMAKE_CUDA_FLAGS "-allow-unsupported-compiler")
   endif()
   if(CMAKE_CUDA_COMPILER)
-    if(CUDA_GCCBIN)
-      message(STATUS "Using as CUDA GCC version: ${CUDA_GCCBIN}")
-      set(CMAKE_CUDA_HOST_COMPILER "${CUDA_GCCBIN}")
+    if(GPUCA_CUDA_GCCBIN)
+      message(STATUS "Using as CUDA GCC version: ${GPUCA_CUDA_GCCBIN}")
+      set(CMAKE_CUDA_HOST_COMPILER "${GPUCA_CUDA_GCCBIN}")
     endif()
     if(CUDA_COMPUTETARGET)
       set(CMAKE_CUDA_ARCHITECTURES ${CUDA_COMPUTETARGET} CACHE STRING "" FORCE)
@@ -170,9 +170,15 @@ if(ENABLE_OPENCL2)
     set(ROCM_ROOT "/opt/rocm")
   endif()
   find_program(ROCM_AGENT_ENUMERATOR rocm_agent_enumerator PATHS "${ROCM_ROOT}/bin")
-  find_program(LLVM_CLANG clang HINTS "${Clang_DIR}/../../../bin-safe")
+  set(GPUCA_OPENCL_CLANGBIN clang-15)
+  if (GPUCA_OPENCL_CLANGBIN)
+    set(LLVM_CLANG ${GPUCA_OPENCL_CLANGBIN})
+  else()
+    find_program(LLVM_CLANG clang HINTS "${Clang_DIR}/../../../bin-safe")
+  endif()
   if(Clang_FOUND
      AND LLVM_FOUND
+     AND NOT LLVM_CLANG STREQUAL "LLVM_CLANG-NOTFOUND"
      AND LLVM_PACKAGE_VERSION VERSION_GREATER_EQUAL 13.0)
     set(OPENCL2_COMPATIBLE_CLANG_FOUND ON)
   endif()