^CMake Warning \(author\) at GeneratedFilesByproduct\.cmake:[0-9]+ \(install\):
  An install rule installs or depends on file

    [^
]*/GeneratedFilesByproduct-build/byproduct\.txt

  which is generated but is not the unique output of a build target, so
  "install_prep/" targets cannot build it with this generator\..*
Call Stack \(most recent call first\):
  CMakeLists\.txt:[0-9]+ \(include\)
This warning is for project developers\.  Use -Wno-author to suppress it\.$
