Fixed compilation with some failing test cases on LLVM 16

CMakeLists.txt

@@ -25,11 +25,6 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
-if(APPLE)
-    set(CMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES
-            ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES})
-endif(APPLE)
-
 #
 # clang-uml custom defines
 #
@@ -124,6 +119,11 @@ else()
     message(STATUS "Found LibTooling libraries: ${LIBTOOLING_LIBS}")
 endif()
 
+if(APPLE OR (LLVM_VERSION_MAJOR GREATER_EQUAL 16))
+    set(CMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES
+            ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES})
+endif()
+
 #
 # Setup threads library
 #