os/Makefile
2019-04-30 17:11:26 -05:00

63 lines
1.9 KiB
Makefile

PLAT=i386
C_SOURCES = $(wildcard kernel/*.c drivers/$(PLAT)/*.c drivers/$(PLAT)/*/*.c cpu/$(PLAT)/*.c fs/*.c)
ASM = $(wildcard cpu/$(PLAT)/*.asm)
S_ASM = $(wildcard cpu/$(PLAT)/*.s)
LIBC_SOURCES = $(wildcard libc/*.c libc/*/*.c)
LIBC_HEADERS = $(wildcard libc/*.h libc/*/*.h)
OBJ = $(C_SOURCES:.c=.o cpu/$(PLAT)/boot.o)
ASM_OBJ = $(S_ASM:.s=.o)
S_ASM_OBJ = $(ASM:.asm=.o)
LIBC_OBJ = $(LIBC_SOURCES:.c=.o)
CC = $(shell cat psinfo/$(PLAT)/cc.txt)
AS = $(shell cat psinfo/$(PLAT)/as.txt)
AR = $(shell cat psinfo/$(PLAT)/ar.txt)
NASM = $(shell cat psinfo/$(PLAT)/nasm.txt)
EMU = $(shell cat psinfo/$(PLAT)/emu.txt)
GDB = $(shell cat psinfo/$(PLAT)/gdb.txt)
CFLAGS = -Isysroot/usr/include -Wextra -Wall -Wno-unused-parameter -g -ffreestanding
QFLAGS = -hda image.img -m 2G -boot d -cdrom os.iso #-chardev socket,id=s1,port=3000,host=localhost -serial chardev:s1
.PHONY: sysroot
all: os.iso
run: os.iso
$(EMU) $(QFLAGS) -monitor stdio
debug: os.iso kernel/kernel.elf
$(EMU) -s $(QFLAGS) &
$(GDB) -ex "target remote localhost:1234" -ex "symbol-file kernel/kernel.elf"
os.iso: kernel/kernel.elf initrd/* initrd/prog.elf
cp kernel/kernel.elf iso/boot
ruby makeinitrd.rb initrd iso/boot/initrd
grub-mkrescue -o $@ iso
initrd/prog.elf: prog/*
cd prog && make
cp prog/prog.elf initrd
kernel/kernel.elf: $(OBJ) $(ASM_OBJ) $(S_ASM_OBJ) libc/libc.a
$(CC) -z max-page-size=4096 -Xlinker -n -T cpu/$(PLAT)/linker.ld -o $@ $(CFLAGS) -nostdlib $^ -lgcc
sysroot: $(LIBC_HEADERS)
mkdir -p sysroot/usr/include
cp -r libc/* sysroot/usr/include
rm -f sysroot/usr/include/libc.a sysroot/usr/include/*.o sysroot/usr/include/*/*.o sysroot/usr/include/*.c sysroot/usr/include/*/*.c
libc/libc.a: $(LIBC_OBJ)
$(AR) rcs $@ $^
%.o: %.c sysroot
$(CC) $(CFLAGS) -c $< -o $@
%.o: %.asm
$(NASM) $< -o $@
%.o: %.s
$(AS) $< -o $@
clean:
rm -rf $(OBJ) $(OBJ) $(ASM_OBJ) $(S_ASM_OBJ) libc/libc.a kernel/cstart.o cpu/memory.h os.iso */*.elf iso/boot/initrd.tar