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
libmount/src/tab_parse.c: In function ‘__table_parse_stream’:
libmount/src/tab_parse.c:409:11: warning: ‘num’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  fs->size = num;
  ~~~~~~~~~^~~~~
libmount/src/tab_parse.c:375:11: note: ‘num’ was declared here
  uint64_t num;
           ^~~
ar: `u' modifier ignored since `D' is the default (see `U')
ar: `u' modifier ignored since `D' is the default (see `U')
ar: `u' modifier ignored since `D' is the default (see `U')
ar: `u' modifier ignored since `D' is the default (see `U')
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY