при сборке systemd пишет:
meson.build:861:0: ERROR: Pkg-config binary for machine MachineChoice.HOST not found. Giving up.
# which pkg-config
/usr/bin/pkg-config
...
[ebuild R ] virtual/pkgconfig-1::gentoo ABI_X86="32 (64) (-x32)" 0 KiB
Total: 1 package (1 reinstall), Size of downloads: 0 KiB