^You have called ADD_LIBRARY for library TestObjectLibWithoutSources without any source files. This typically indicates a problem with your CMakeLists.txt file
CMake Error at OBJECTwithNoSourcesButLinkObjects.cmake:[0-9]+ \(target_link_libraries\):
  Object library target \"TestObjectLibWithoutSources\" may not link to
  anything.
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)$