Tests/RunCMake/file/COPY_FILE-file-ONLY_IF_DIFFERENT-fail.cmake - third_party/cmake - Git at Google

 set(oldname "${CMAKE_CURRENT_BINARY_DIR}/input")
 set(newname "${CMAKE_CURRENT_BINARY_DIR}/output")
 file(WRITE "${oldname}" "")
 file(MAKE_DIRECTORY "${newname}")
 file(COPY_FILE "${oldname}" "${newname}" ONLY_IF_DIFFERENT)
	set(oldname "${CMAKE_CURRENT_BINARY_DIR}/input")
	set(newname "${CMAKE_CURRENT_BINARY_DIR}/output")
	file(WRITE "${oldname}" "")
	file(MAKE_DIRECTORY "${newname}")
	file(COPY_FILE "${oldname}" "${newname}" ONLY_IF_DIFFERENT)