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PATH := $(shell pwd)/toolchain/binutils-2.37/bin/:$(PATH)
AS = i686-elf-as
CC = i686-elf-gcc
CFLAGS = -std=gnu99 -ffreestanding -O2 -Wall -Wextra
CFLAGS += -mgeneral-regs-only
CFLAGS += -Isrc/
LFLAGS = -ffreestanding -O2 -nostdlib -lgcc
QFLAGS = -no-reboot -d guest_errors,int,pcall,cpu_reset
define from_sources
$(patsubst src/%.s,out/obj/%.s.o,$(shell find $(1) -type f -name '*.s')) \
$(patsubst src/%.c,out/obj/%.c.o,$(shell find $(1) -type f -name '*.c'))
endef
out/boot.iso: out/fs/boot/kernel.bin out/fs/boot/grub/grub.cfg out/fs/boot/init
@grub-mkrescue -o $@ out/fs/ > /dev/null 2>&1
out/fs/boot/kernel.bin: src/kernel/linker.ld $(call from_sources, src/kernel/)
@mkdir -p $(@D)
@$(CC) $(LFLAGS) -T $^ -o $@
grub-file --is-x86-multiboot $@
out/fs/boot/init: src/init/linker.ld $(call from_sources, src/init/)
@mkdir -p $(@D)
@$(CC) $(LFLAGS) -T $^ -o $@
out/fs/boot/grub/grub.cfg: grub.cfg
@mkdir -p $(@D)
@cp $< $@
out/obj/%.s.o: src/%.s
@mkdir -p $(@D)
@$(AS) $^ -o $@
out/obj/%.c.o: src/%.c
@mkdir -p $(@D)
@$(CC) $(CFLAGS) -c $^ -o $@
.PHONY: boot debug lint clean
boot: out/boot.iso
qemu-system-i386 $< $(QFLAGS) -no-shutdown
debug: out/boot.iso
qemu-system-i386 $< $(QFLAGS) -s -S &
@sleep 1
gdb
lint:
@tools/linter/main.rb
clean:
rm -rv out/
|
