49 lines
1.2 KiB
Makefile
49 lines
1.2 KiB
Makefile
# Makefile for the Fusion operating system.
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# Make things fixable, not autocorrecting
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# TODO: Toolchain installation should be documented in the README
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# https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack
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TOOLPREFIX = riscv-none-elf
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CC = $(TOOLPREFIX)-gcc
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AS = $(TOOLPREFIX)-gas
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LD = $(TOOLPREFIX)-ld
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OBJCOPY = $(TOOLPREFIX)-objcopy
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OBJDUMP = $(TOOLPREFIX)-objdump
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# TODO: Document these options with clear descriptions, it should be readable
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# by people not intimately familiar with machine code and/or gcc tooling.
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CFLAGS = -Wall -Werror -O -fno-omit-frame-pointer -ggdb -gdwarf-2
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CFLAGS += -MD
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CFLAGS += -mcmodel=medany
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CFLAGS += -ffreestanding -fno-common -nostdlib -mno-relax
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CFLAGS += -I.
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CFLAGS += -fno-pie -no-pie
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CFLAGS += -fno-stack-protector
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CFLAGS += -march=rv64gc -mabi=lp64
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LDFLAGS = -z max-page-size=4096
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LDFLAGS += -m elf64lriscv
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all: kernel.elf
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%.o: %.c
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@echo CC $@
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@$(CC) $(CFLAGS) -nostdinc -I. -c $< -o $@
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%.o: %.S
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@echo CC-AS $@
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@$(CC) $(CFLAGS) -c $< -o $@
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kernel.elf: trap.o kernelvec.o entry.o start.o kernel.o spinlock.o
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@echo LD $@
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@$(LD) $(LDFLAGS) -T kernel.ld -o $@ $^
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kernel.bin: kernel.elf
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$(OBJCOPY) -O binary $< $@
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clean:
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rm -f *.o *.d *.elf *.bin
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-include *.d
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