CMake Error at BadInstallPrefix.cmake:1 \(add_custom_target\):
  Error evaluating generator expression:

    \$<INSTALL_PREFIX>

  INSTALL_PREFIX is a marker for install\(EXPORT\) only.  It should never be
  evaluated.
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)
