set(CPACK_RPM_COMPONENT_INSTALL "ON")

set(CPACK_RPM_FILE_NAME "RPM-DEFAULT")
set(CPACK_RPM_PKG_2_PACKAGE_NAME "second")
set(CPACK_RPM_PKG_3_FILE_NAME "pkg_3_abc.rpm")

install(FILES CMakeLists.txt DESTINATION foo COMPONENT pkg_1)
install(FILES CMakeLists.txt DESTINATION foo COMPONENT pkg_2)
install(FILES CMakeLists.txt DESTINATION foo COMPONENT pkg_3)

set(CPACK_PACKAGE_NAME "custom_names")