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CC=gcc
CFLAGS = -Wall -nostdlib -nostdinc -ffreestanding -DKERNEL_SOS
LDFLAGS = --warn-common
OBJECTS = bootstrap/multiboot.o \
hwcore/idt.o hwcore/gdt.o \
hwcore/exception.o hwcore/exception_wrappers.o \
hwcore/irq.o hwcore/irq_wrappers.o hwcore/i8259.o \
hwcore/paging.o \
hwcore/i8254.o drivers/x86_videomem.o drivers/bochs.o \
sos/physmem.o sos/klibc.o sos/main.o
KERNEL_OBJ = sos.elf
MULTIBOOT_IMAGE = fd.img
PWD := $(shell pwd)
# Main target
all: $(MULTIBOOT_IMAGE)
$(MULTIBOOT_IMAGE): $(KERNEL_OBJ)
./support/build_image.sh $@ $<
$(KERNEL_OBJ): $(OBJECTS) ./support/sos.lds
$(LD) $(LDFLAGS) -T ./support/sos.lds -o $@ $(OBJECTS)
-nm -C $@ | cut -d ' ' -f 1,3 > sos.map
-include .mkvars
# Create objects from C source code
%.o: %.c
$(CC) -I$(PWD) -c $< $(CFLAGS) -o $@
# Create objects from assembler (.S) source code
%.o: %.S
$(CC) -I$(PWD) -c $< $(CFLAGS) -DASM_SOURCE=1 -o $@
# Clean directory
clean:
$(RM) *.img *.o mtoolsrc *~ menu.txt *.img *.elf *.bin *.map
$(RM) *.log *.out bochs*
$(RM) bootstrap/*.o bootstrap/*~
$(RM) drivers/*.o drivers/*~
$(RM) hwcore/*.o hwcore/*~
$(RM) sos/*.o sos/*~
$(RM) support/*~
$(RM) extra/*~
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