^CMake Error at SourceProperty-CMP0070-NEW.cmake:[0-9]+ \(add_library\):
  Cannot find source file:

.*\/relative-output-NEW\.c

  Tried extensions \.c \.C.*
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)


CMake Generate step failed.  Build files cannot be regenerated correctly.$