CPACK_DEBIAN_PACKAGE_SHLIBDEPS_PRIVATE_DIRS doesn't have a <COMPONENT> variant
Many CPACK_DEBIAN_PACKAGE_*
variables have a CPACK_DEBIAN_<COMPONENT>_PACKAGE_*
variant (e.g. CPACK_DEBIAN_PACKAGE_SHLIBDEPS
and CPACK_DEBIAN_<COMPONENT>_PACKAGE_SHLIBDEPS
.
CPACK_DEBIAN_PACKAGE_SHLIBDEPS_PRIVATE_DIRS
does not and probably should.