  toybox          - Build toybox.
  COMMANDNAME     - Build individual toybox command as a standalone binary.
  list            - List COMMANDNAMEs you can build standalone.
  list_pending    - List unfinished COMMANDNAMEs out of toys/pending.
  change          - Build each command standalone under change/.
  baseline        - Create toybox_old for use by bloatcheck.
  bloatcheck      - Report size differences between old and current versions
  test_COMMAND    - Run tests for COMMAND (test_ps, test_cat, etc.)
  tests           - Run test suite against all compiled commands.
                    export TEST_HOST=1 to test host command, VERBOSE=1
                    to show diff, VERBOSE=fail to stop after first failure.
  clean           - Delete temporary files.
  distclean       - Delete everything that isn't shipped.
  install_airlock - Install toybox and host toolchain into $PREFIX directory
                    (providing $PATH for hermetic builds).
  install_flat    - Install toybox into $PREFIX directory.
  install         - Install toybox into subdirectories of $PREFIX.
  uninstall_flat  - Remove toybox from $PREFIX directory.
  uninstall       - Remove toybox from subdirectories of $PREFIX.
  root            - Build/package root filesystem under root/ controlled by
                    CROSS= cross compile (see scripts/mcm-buildall.sh)
                    LINUX= build kernel from this source, configured for qemu
  run_root        - boot toyroot under qemu, I.E. cd root/$CROSS && ./qemu-*.sh

example: make defconfig toybox install CFLAGS="--static" CROSS_COMPILE=armv5l-
or     : make root run_root CROSS=sh4 LINUX=~/linux