actual project

Makefile

@@ -0,0 +1,72 @@
+CC      = riscv64-unknown-elf-gcc
+OBJCOPY = riscv64-unknown-elf-objcopy
+SIZE    = riscv64-unknown-elf-size
+
+PROJECT  = fan_controller
+BUILD    = build
+SRC_DIR  = src
+FUN_DIR  = $(HOME)/git/ch32fun/ch32fun
+
+MINICHLINK = $(FUN_DIR)/../minichlink/minichlink
+
+SRCS = $(SRC_DIR)/main.c $(FUN_DIR)/ch32fun.c
+OBJS = $(patsubst %.c, $(BUILD)/%.o, $(SRCS))
+
+CFLAGS = \
+    -march=rv32ec \
+    -mabi=ilp32e \
+    -Os \
+    -flto \
+    -ffunction-sections \
+    -fdata-sections \
+    -fno-common \
+    -DCH32V003 \
+    -Wall \
+    -Wno-attributes \
+    -I$(FUN_DIR) \
+    -I$(SRC_DIR) \
+    -I/usr/include/newlib
+
+LD_SCRIPT_IN  = $(FUN_DIR)/ch32fun.ld
+LD_SCRIPT_OUT = $(BUILD)/ch32fun_processed.ld
+
+LDFLAGS = \
+    -march=rv32ec \
+    -mabi=ilp32e \
+    -T$(LD_SCRIPT_OUT) \
+    -Wl,--gc-sections \
+    -nostdlib \
+    -flto
+
+.PHONY: all flash clean
+
+all: $(BUILD)/$(PROJECT).bin
+
+# Preprocess linker script
+$(LD_SCRIPT_OUT): $(LD_SCRIPT_IN) | $(BUILD)
+	$(CC) -E -P -DCH32V003 -x assembler-with-cpp $< -o $@
+
+# Compile
+$(BUILD)/%.o: %.c | $(BUILD)
+	@mkdir -p $(dir $@)
+	$(CC) $(CFLAGS) -c $< -o $@
+
+# Link
+$(BUILD)/$(PROJECT).elf: $(OBJS) $(LD_SCRIPT_OUT)
+	$(CC) $(LDFLAGS) $(OBJS) -lgcc -o $@
+	$(SIZE) $@
+
+# Binary
+$(BUILD)/$(PROJECT).bin: $(BUILD)/$(PROJECT).elf
+	$(OBJCOPY) -O binary $< $@
+
+# Flash
+flash: $(BUILD)/$(PROJECT).bin
+	$(MINICHLINK) -w $< flash -b
+
+# Create build dir
+$(BUILD):
+	mkdir -p $(BUILD)
+
+clean:
+	rm -rf $(BUILD)