CMake Error at bad-feature4.cmake:[0-9]+ \(add_library\):
  Feature 'feat', specified by variable 'CMAKE_C_LINK_GROUP_USING_feat', is
  malformed \(wrong number of elements\) and cannot be used to link target
  'lib'.
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)
