$NetBSD: patch-cl__headers_CMakeLists.txt,v 1.1 2023/12/14 13:16:06 adam Exp $

Fix standalone build
https://github.com/intel/opencl-clang/pull/485

--- cl_headers/CMakeLists.txt.orig	2023-04-13 01:08:59.000000000 +0000
+++ cl_headers/CMakeLists.txt
@@ -1,5 +1,9 @@
 set(CL_HEADERS_LIB cl_headers)
-set(CLANG_COMMAND $<TARGET_FILE:clang> )
+if(USE_PREBUILT_LLVM)
+  find_program(CLANG_COMMAND clang PATHS ${LLVM_TOOLS_BINARY_DIR} NO_DEFAULT_PATH)
+else()
+  set(CLANG_COMMAND $<TARGET_FILE:clang> )
+endif()
 if(LLVM_USE_HOST_TOOLS AND NOT OPENCL_CLANG_BUILD_EXTERNAL)
   build_native_tool(clang CLANG_COMMAND)
 endif()
@@ -16,7 +20,7 @@ endfunction(copy_file)
 
 if(USE_PREBUILT_LLVM)
     set(OPENCL_HEADERS_DIR
-      "${LLVM_LIBRARY_DIRS}/clang/${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}/include/")
+      "${LLVM_LIBRARY_DIRS}/clang/${LLVM_VERSION_MAJOR}/include/")
 else(USE_PREBUILT_LLVM)
     set(OPENCL_HEADERS_DIR "${CLANG_SOURCE_DIR}/lib/Headers")
 endif(USE_PREBUILT_LLVM)