我正在尝试使用通配符构建我的目标。这是我的Makefile:
BINARY = main
LDSCRIPT = stm32f4-discovery.ld
PREFIX ?= arm-none-eabi
CC = $(PREFIX)-gcc
LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
CFLAGS += -Os -g \
-Wall -Wextra -Wimplicit-function-declaration \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I$(TOOLCHAIN_DIR)/include \
-fno-common -mcpu=cortex-m4 -mthumb \
-mfloat-abi=hard -mfpu=fpv4-sp-d16 -MD -DSTM32F4
LDSCRIPT ?= $(BINARY).ld
LDFLAGS += --static -lc -lnosys -L$(TOOLCHAIN_DIR)/lib \
-L$(TOOLCHAIN_DIR)/lib/stm32/f4 \
-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections \
-mthumb -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16
OBJS += $(BINARY).o
all: images
images: $(BINARY).images
%.images: %.bin
@#printf "*** $* images generated ***\n"
%.bin: %.elf
@#printf " OBJCOPY $(*).bin\n"
$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_stm32f4.a
@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(LD) -o $(*).elf $(OBJS) -lopencm3_stm32f4 $(LDFLAGS)
%.o: %.c Makefile
@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(CC) $(CFLAGS) -o $@ -c $<
clean:
$(Q)rm -f *.o
$(Q)rm -f *.d
$(Q)rm -f *.elf
$(Q)rm -f *.bin
-include $(OBJS:.o=.d)
当我制作时,我收到错误:
make: *** No rule to make target `main.bin', needed by `main.images'. Stop.
我正在尝试制作一个图像,因此我可以将每个图像更改%
为$(BINARY)
,并且这有效,但我想弄清楚为什么这不起作用。