message: Fixing issue with doctestAddTests.cmake
  Newer versions of CMake won't work with line 60: `if(${add_labels} EQUAL 1)`, changed it to simply `if (${add_labels})`
diff: @@ -61,7 +61,7 @@ foreach(line ${output})
  endif()
  set(test ${line})
  set(labels "")
  - if(${add_labels} EQUAL 1)
  + if(${add_labels})
  # get test suite that test belongs to
  execute_process(
  COMMAND ${TEST_EXECUTOR} "${TEST_EXECUTABLE}" --test-case=${test} --list-test-suites
  