cc -D__PCC__ -I/inc/c -E -o sheet.i sheet.c
cc -D__PCC__ -I/inc/c -E -o edit.i edit.c
cc -D__PCC__ -I/inc/c -E -o search.i search.c

cc -S -o sheet.s sheet.i
cc -S -o edit.s edit.i
cc -S -o search.s search.i

as -o sheet.o sheet.s
as -o edit.o edit.s
as -o search.o search.s

ld -T /inc/_link.ld -o edit_ sheet.o edit.o search.o /lib/libc.a -lgcc