[CMake] CPACK_PACKAGE_INSTALL_DIRECTORY / CPACK_INSTALL_PREFIX / CMAKE_INSTALL_PREFIX

[Mathieu Malaterre]

Hi there,

  Has anyone a good summary on how those three variable interfacts ?
It looks like CPACK_INSTALL_PREFIX is not taken into account for the
NSIS installer, and instead solely CPACK_PACKAGE_INSTALL_DIRECTORY is
used.
  I need to locate some resource files installed on the system, so I'd
like to know what should I do (previously I was using
CMAKE_INSTALL_PREFIX + some known internal value for gdcm), but that
does not seems to be the right path for an NSIS install, right ?

Thank you
-- 
Mathieu