60 lines
1.6 KiB
Makefile
60 lines
1.6 KiB
Makefile
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.SUFFIXES:
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.PHONY: all clean
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SOURCE_DIR := src
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BUILD_DIR := build
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CONTAINER_CMD := podman run -v "$(shell pwd)":"/scratch" \
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--workdir="/scratch" \
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-e TERM \
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-t \
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cc-i686:latest
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CC := $(CONTAINER_CMD) i686-elf-gcc
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LD := $(CONTAINER_CMD) i686-elf-ld
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AS := $(CONTAINER_CMD) i686-elf-as
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AR := $(CONTAINER_CMD) i686-elf-ar
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C_SOURCES := $(shell find $(SOURCE_DIR) -name '*.c')
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ASM_SOURCES := $(shell find $(SOURCE_DIR) -name '*.S')
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OBJECTS := $(patsubst $(SOURCE_DIR)/%, $(BUILD_DIR)/%, $(C_SOURCES:.c=.o) $(ASM_SOURCES:.S=.o))
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DEPENDS := $(patsubst $(SOURCE_DIR)/%, $(BUILD_DIR)/%, $(C_SOURCES:.c=.d))
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CFLAGS := -MMD -ffreestanding -O0 -Wall -Wextra -Werror -std=c2x -I$(SOURCE_DIR)/include -no-pie -fstack-protector-strong
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ASFLAGS :=
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$(info C_SOURCES is $(C_SOURCES))
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$(info ASM_SOURCES is $(ASM_SOURCES))
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$(info OBJECTS is $(OBJECTS))
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$(info DEPENDS is $(DEPENDS))
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all: myos.iso
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run: myos.iso
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qemu-system-i386 -cdrom myos.iso
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cross-compiler: cross-compiler-image/Dockerfile
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podman build cross-compiler-image -t cc-i686
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myos.iso: $(BUILD_DIR)/myos.bin
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@mkdir -p $(BUILD_DIR)/image/boot/grub
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cp -v $< $(BUILD_DIR)/image/boot/
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cp -v grub.cfg $(BUILD_DIR)/image/boot/grub/grub.cfg
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grub-mkrescue -o $@ $(BUILD_DIR)/image
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$(BUILD_DIR)/myos.bin: $(OBJECTS)
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mkdir -p $(BUILD_DIR)
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$(CC) -T linker.ld -o $@ $(CFLAGS) -nostdlib $^ -lgcc
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-include $(DEPENDS)
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$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.c Makefile
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@mkdir -p $(@D)
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$(CC) -c $(CFLAGS) $< -o $@
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$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.S Makefile
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@mkdir -p $(@D)
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$(AS) $(ASFLAGS) $< -o $@
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