blob: 23a86204ab5241533561186708b5c93abf3558c4 (
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TOOLCHAIN_PREFIX := riscv64-linux-gnu-
CC := $(TOOLCHAIN_PREFIX)gcc
CXX := $(TOOLCHAIN_PREFIX)g++
LD := $(TOOLCHAIN_PREFIX)ld
OBJCOPY := $(TOOLCHAIN_PREFIX)objcopy
BUILD_DIR := build
SRC_DIR := src
CFLAGS := -Wall -Wextra -O2 -ffreestanding -nostdlib -mcmodel=medany -Iinclude
CXXFLAGS := $(CFLAGS) -fno-exceptions -fno-rtti -fno-use-cxa-atexit
LINKER_SCRIPT := link.ld
SRCS_S := $(shell find $(SRC_DIR) -name "*.S")
SRCS_CXX := $(shell find $(SRC_DIR) -name "*.cc")
OBJS := $(SRCS_S:%.S=$(BUILD_DIR)/%.o) $(SRCS_CXX:%.cc=$(BUILD_DIR)/%.o)
TARGET := $(BUILD_DIR)/kernel.elf
.PHONY: all clean run
all: $(TARGET)
$(TARGET): $(OBJS) $(LINKER_SCRIPT)
@echo " LD $@"
@$(LD) -T $(LINKER_SCRIPT) -o $@ $(OBJS)
$(BUILD_DIR)/%.o: %.S
@mkdir -p $(dir $@)
@echo " AS $<"
@$(CC) $(CFLAGS) -c $< -o $@
$(BUILD_DIR)/%.o: %.cc
@mkdir -p $(dir $@)
@echo " CXX $<"
@$(CXX) $(CXXFLAGS) -c $< -o $@
run: $(TARGET)
@echo " QEMU Running..."
@qemu-system-riscv64 -machine virt -nographic -bios none \
-kernel $(TARGET) -m 128M
clean:
rm -rf $(BUILD_DIR)
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