The LXR Cross Referencer for SOS

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001 CC=gcc
002 CFLAGS  = -Wall -nostdlib -nostdinc -ffreestanding
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/klibc.o sos/main.o
010 
011 KERNEL_OBJ   = sos.elf
012 MULTIBOOT_IMAGE = fd.img
013 PWD := $(shell pwd)
014 
015 # Main target
016 all: $(MULTIBOOT_IMAGE)
017 
018 $(MULTIBOOT_IMAGE): $(KERNEL_OBJ)
019         ./support/build_image.sh $@ $<
020 
021 $(KERNEL_OBJ): $(OBJECTS)
022         $(LD) $(LDFLAGS) -T ./support/sos.lds -o $@ $^
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 # Create objects from assembler (.S) source code
032 %.o: %.S
033         $(CC) -I$(PWD) -c $< $(CFLAGS) -DASM_SOURCE=1 -o $@
034 
035 # Clean directory
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/*~

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