ref: 5e2071caecc32e4c5ff3ee9e0c7ac3cd13bd43c6 dir: /sys/src/9/pc/pcmkfile/
PCFILES=`{../port/mkfilelist ../pc} ^($PCFILES)\.$O:R: '../pc/\1.c' $CC $CFLAGS -.I. ../pc/$stem1.c