busybox fails to link

[Eric Hanchrow <offby1@blarg.net>]

Looks like someone needs to write code for ping and logname.

    make[3]: Entering directory `/usr/src/boot-floppies/utilities/busybox'
    gcc -s -o busybox cat.o chmod_chown_chgrp.o chroot.o chvt.o
         clear.o cp_mv.o date.o dd.o df.o dmesg.o du.o fbset.o find.o
         grep.o gunzip.o head.o id.o init.o kill.o ln.o loadacm.o
         loadfont.o loadkmap.o logger.o ls.o mkdir.o mknod.o mkswap.o
         mktemp.o more.o mount.o nfsmount.o ps.o pwd.o reboot.o
         regexp.o rm.o rmdir.o sleep.o swaponoff.o sync.o syslogd.o
         tail.o tar.o touch.o true_false.o tty.o umount.o uname.o
         uptime.o busybox.o messages.o utility.o
    busybox.o(.rodata+0x10c): undefined reference to `ping_main'
    busybox.o(.rodata+0x15c): undefined reference to `logname_main'
    collect2: ld returned 1 exit status

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