001 CC=gcc
002 CFLAGS = -Wall -nostdlib -nostdinc -ffreestanding -DKERNEL_SOS
003 LDFLAGS = --warn-common
004 OBJECTS = bootstrap/multiboot.o \
005 hwcore/idt.o hwcore/gdt.o \
006 hwcore/exception.o hwcore/exception_wrappers.o \
007 hwcore/irq.o hwcore/irq_wrappers.o hwcore/i8259.o \
008 hwcore/i8254.o drivers/x86_videomem.o drivers/bochs.o \
009 sos/physmem.o sos/klibc.o sos/main.o
010
011 KERNEL_OBJ = sos.elf
012 MULTIBOOT_IMAGE = fd.img
013 PWD := $(shell pwd)
014
015
016 all: $(MULTIBOOT_IMAGE)
017
018 $(MULTIBOOT_IMAGE): $(KERNEL_OBJ)
019 ./support/build_image.sh $@ $<
020
021 $(KERNEL_OBJ): $(OBJECTS) ./support/sos.lds
022 $(LD) $(LDFLAGS) -T ./support/sos.lds -o $@ $(OBJECTS)
023 -nm -C $@ | cut -d ' ' -f 1,3 > sos.map
024
025 -include .mkvars
026
027 # Create objects from C source code
028 %.o: %.c
029 $(CC) -I$(PWD) -c $< $(CFLAGS) -o $@
030
031
032 %.o: %.S
033 $(CC) -I$(PWD) -c $< $(CFLAGS) -DASM_SOURCE=1 -o $@
034
035
036 clean:
037 $(RM) *.img *.o mtoolsrc *~ menu.txt *.img *.elf *.bin *.map
038 $(RM) *.log *.out bochs*
039 $(RM) bootstrap/*.o bootstrap/*~
040 $(RM) drivers/*.o drivers/*~
041 $(RM) hwcore/*.o hwcore/*~
042 $(RM) sos/*.o sos/*~
043 $(RM) support/*~
044 $(RM) extra/*~