configure: WARNING: Unable to detect syscall pidfd_open. configure: WARNING: Unable to detect syscall pidfd_send_signal. configure: WARNING: disable all programs by default configure: WARNING: hwclock disabled; not building hwclock_cmos libtool: warning: relinking 'libmount.la' CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY