CMake Error at CMP0037-NEW-space.cmake:4 \(add_library\):
  The target name "lib with spaces" is reserved or not valid for certain
  CMake features, such as generator expressions, and may result in undefined
  behavior.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)
+
CMake Error at CMP0037-NEW-space.cmake:5 \(add_executable\):
  The target name "exe with spaces" is reserved or not valid for certain
  CMake features, such as generator expressions, and may result in undefined
  behavior.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)
+
CMake Error at CMP0037-NEW-space.cmake:6 \(add_custom_target\):
  The target name "custom with spaces" is reserved or not valid for certain
  CMake features, such as generator expressions, and may result in undefined
  behavior.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)