Plan 9 from Bell Labs’s /usr/web/sources/contrib/quanstro/src/grepfold/mkfile
</$objtype/mkfile TARG=grep HFILES=\ grep.h\ OFILES=\ y.tab.$O\ fold.$O\ main.$O\ comp.$O\ sub.$O\ YFILES=grep.y\ BIN=/$objtype/bin </sys/src/cmd/mkone