Plan 9 from Bell Labs’s /usr/web/sources/patch/applied/fs-gbe-usr997902/mkfile.6.orig
IPFILES=`{builtin cd ../ip;echo *.c | sed 's/ /|/g; s/\.c//g'} ^($IPFILES)\.$O:R: '../ip/\1.c' $CC $CFLAGS -I. ../ip/$stem1.c