I built a Yocto image, but could not find /init, usually it should be a symbolic link in /init->/sbin/init->/lib/systemd/systemd, In /lib/systemd directory, it only contains a subdirectory system, all other systemd binaries are missing, many system commands in /sbin are also missing. What could I get wrong here to miss out all systemd files?
Are you using an existing image recipe or writing your own? If it's your own, do you have packagegroup-core-boot included?
