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80 lines
1.6 KiB
Makefile
80 lines
1.6 KiB
Makefile
# MetalOS Kernel Makefile
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# Cross-compiler (x86_64 bare metal)
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CC = x86_64-elf-gcc
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AS = nasm
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LD = x86_64-elf-ld
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OBJCOPY = x86_64-elf-objcopy
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# Check if cross-compiler exists, fallback to regular gcc
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ifeq ($(shell which $(CC) 2>/dev/null),)
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CC = gcc
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LD = ld
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OBJCOPY = objcopy
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endif
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# Directories
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SRC_DIR = src
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INC_DIR = include
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BUILD_DIR = build
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# Compiler flags
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CFLAGS = -Wall -Wextra -Werror \
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-ffreestanding -fno-stack-protector \
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-mno-red-zone -mcmodel=large \
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-I$(INC_DIR) \
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-O2
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# Assembler flags
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ASFLAGS = -f elf64
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# Linker flags
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LDFLAGS = -nostdlib -T linker.ld
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# Source files
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C_SOURCES = $(shell find $(SRC_DIR) -name '*.c')
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ASM_SOURCES = $(shell find $(SRC_DIR) -name '*.asm')
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# Object files
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C_OBJECTS = $(patsubst $(SRC_DIR)/%.c,$(BUILD_DIR)/%.o,$(C_SOURCES))
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ASM_OBJECTS = $(patsubst $(SRC_DIR)/%.asm,$(BUILD_DIR)/%.o,$(ASM_SOURCES))
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OBJECTS = $(C_OBJECTS) $(ASM_OBJECTS)
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# Output
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TARGET = metalos.bin
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.PHONY: all clean
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all: $(BUILD_DIR) $(TARGET)
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$(BUILD_DIR):
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mkdir -p $(BUILD_DIR)
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mkdir -p $(BUILD_DIR)/core
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mkdir -p $(BUILD_DIR)/hal
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mkdir -p $(BUILD_DIR)/drivers
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mkdir -p $(BUILD_DIR)/syscall
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# Compile C files
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$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c
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@mkdir -p $(dir $@)
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$(CC) $(CFLAGS) -c $< -o $@
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# Assemble ASM files
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$(BUILD_DIR)/%.o: $(SRC_DIR)/%.asm
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@mkdir -p $(dir $@)
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$(AS) $(ASFLAGS) $< -o $@
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# Link kernel
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$(TARGET): $(OBJECTS)
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$(LD) $(LDFLAGS) $(OBJECTS) -o $@
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clean:
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rm -rf $(BUILD_DIR) $(TARGET)
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# Print variables for debugging
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info:
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@echo "C Sources: $(C_SOURCES)"
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@echo "ASM Sources: $(ASM_SOURCES)"
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@echo "Objects: $(OBJECTS)"
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@echo "Compiler: $(CC)"
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