CMake Error at add_test.cmake:5 \(add_test\):
  Error evaluating generator expression:

    \$<COMPILE_LANG_AND_ID:CXX,GNU>

  \$<COMPILE_LANG_AND_ID:lang,id> may only be used with binary targets to
  specify include directories, compile definitions, and compile options.  It
  may not be used with the add_custom_command, add_custom_target, or
  file\(GENERATE\) commands.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)