ref: 19b480838af1721b833f6cd7575e994a5d55071d dir: /sys/src/cmd/diff/mkfile/
< /$objtype/mkfile TARG=diff merge3 OFILES=\ diffdir.$O\ diffio.$O\ diffreg.$O\ util.$O HFILES=diff.h BIN=/$objtype/bin </sys/src/cmd/mkmany