[libclc] use default paths with find_program when possible

Author: RossComputerGuy

libclc/CMakeLists.txt

@@ -55,7 +55,7 @@ if( LIBCLC_STANDALONE_BUILD OR CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DI
   # Import required tools
   if( NOT EXISTS ${LIBCLC_CUSTOM_LLVM_TOOLS_BINARY_DIR} )
     foreach( tool IN ITEMS clang llvm-as llvm-link opt )
-      find_program( LLVM_TOOL_${tool} ${tool} PATHS ${LLVM_TOOLS_BINARY_DIR} NO_DEFAULT_PATH )
+    find_program( LLVM_TOOL_${tool} ${tool} PATHS ${LLVM_TOOLS_BINARY_DIR} )
       set( ${tool}_exe ${LLVM_TOOL_${tool}} )
       set( ${tool}_target )
     endforeach()
@@ -91,7 +91,7 @@ if( EXISTS ${LIBCLC_CUSTOM_LLVM_TOOLS_BINARY_DIR} )
   # and custom tools.
   foreach( tool IN ITEMS clang llvm-as llvm-link opt )
     find_program( LLVM_CUSTOM_TOOL_${tool} ${tool}
-      PATHS ${LIBCLC_CUSTOM_LLVM_TOOLS_BINARY_DIR} NO_DEFAULT_PATH )
+      PATHS ${LIBCLC_CUSTOM_LLVM_TOOLS_BINARY_DIR} )
     set( ${tool}_exe ${LLVM_CUSTOM_TOOL_${tool}} )
     set( ${tool}_target )
   endforeach()
@@ -108,7 +108,7 @@ endforeach()
 if( TARGET llvm-spirv )
   get_host_tool_path( llvm-spirv LLVM_SPIRV llvm-spirv_exe llvm-spirv_target )
 else()
-  find_program( LLVM_SPIRV llvm-spirv PATHS ${LLVM_TOOLS_BINARY_DIR} NO_DEFAULT_PATH )
+  find_program( LLVM_SPIRV llvm-spirv PATHS ${LLVM_TOOLS_BINARY_DIR} )
   set( llvm-spirv_exe "${LLVM_SPIRV}" )
   set( llvm-spirv_target )
 endif()