From 321e3b99c1a8d54c8475f5ae998452069cc5eb71 Mon Sep 17 00:00:00 2001
From: Wenju He <wenju.he@intel.com>
Date: Thu, 18 May 2023 14:03:58 +0800
Subject: [PATCH] Fix standalone build (#415) (#437)
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Fixes https://github.com/intel/opencl-clang/issues/406
Fixes https://github.com/intel/opencl-clang/issues/374

(cherry picked from commit 529a9188114bcbd8ed753d2276942384fa50d7a1)

Co-authored-by: František Zatloukal <Zatloukal.Frantisek@gmail.com>
---
 cl_headers/CMakeLists.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cl_headers/CMakeLists.txt b/cl_headers/CMakeLists.txt
index 788adff8..86df76f6 100644
--- a/cl_headers/CMakeLists.txt
+++ b/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()