cmake CXX_HAVE_OFFSETOF examples

Tencent/Forward source/third_party/hdf5/config/cmake_ext_mod/HDFUseCXX.cmake :99 

foreach (cxx_test
      OLD_HEADER_FILENAME
      HDF_NO_NAMESPACE
      HDF_NO_STD
      BOOL_NOTDEFINED
      NO_STATIC_CAST
      CXX_HAVE_OFFSETOF
  )

szcom/rnnlib hdf5_snap/config/cmake/ConfigureChecks.cmake :695 

foreach (test
      LONE_COLON
      HAVE_ATTRIBUTE
      HAVE_C99_FUNC
      HAVE_FUNCTION
      HAVE_C99_DESIGNATED_INITIALIZER
      SYSTEM_SCOPE_THREADS
      HAVE_SOCKLEN_T
      CXX_HAVE_OFFSETOF
  )