added: option to disable cppcheck

cmake/Scripts/IFEMTesting.cmake

@@ -188,7 +188,9 @@ macro(add_check_target)
     list(APPEND IPATHS -I ${dep})
   endforeach()
 
-  find_program(CLANGCHECK_COMMAND clang-check)
+  if(NOT CMAKE_DISABLE_FIND_PACKAGE_ClangCheck)
+    find_program(CLANGCHECK_COMMAND clang-check)
+  endif()
   if(NOT CMAKE_DISABLE_FIND_PACKAGE_CppCheck)
     find_program(CPPCHECK_COMMAND cppcheck)
   endif()