与生成文件

Question

问题为了使用库的我需要改变一个生成文件来利用交叉编译器臂-NONE-EABI-G ++的代替臂-NONE-EABI-GCC;但是，由于某些奇怪的原因，我不断收到No rule to make target错误。我删除了依赖关系，只留下了启动代码和main，我也试图使用文件的绝对路径。但是，我仍然收到错误。有没有人有什么建议？

PROJECT_NAME=test-liv 

BUILDDIR = build 

LIBDIR = ../common 
DEVICE = $(LIBDIR)/STM32F4xx 
CORE = $(LIBDIR)/CMSIS 
PERIPH = $(LIBDIR)/STM32F4xx_StdPeriph_Driver 
PROJHEADERS = inc 
PROJ_LIBDIR = lib 

#SOURCES = src/main.cpp 
SOURCES = startup_stm32f4xx.S 
SOURCES += system_stm32f4xx.c 
SOURCES += LibraryHacks.cpp 

SOURCES += src/main.cpp 
#SOURCES += $(PERIPH)/src/ 
#PROJECT SOURCES 
#SOURCES += $(PROJ_LIBDIR)/src/ 


OBJECTS = $(addprefix $(BUILDDIR)/, $(addsuffix .o, $(abspath $(basename $(SOURCES))))) 

INCLUDES += -I$(DEVICE) \ 
      -I$(PROJHEADERS) \ 
      -I$(CORE) \ 
      -I$(PERIPH)/inc \ 
      -I$(PROJ_LIBDIR)/inc \ 
      -Isrc \ 
      -I. 

ELF = $(BUILDDIR)/$(PROJECT_NAME).elf 
HEX = $(BUILDDIR)/$(PROJECT_NAME).hex 
BIN = $(BUILDDIR)/$(PROJECT_NAME).bin 

CXX = arm-none-eabi-g++ 
LD = arm-none-eabi-g++ 
AR = arm-none-eabi-ar 
OBJCOPY = arm-none-eabi-objcopy 
GDB = arm-none-eabi-gdb 
SIZE = arm-none-eabi-size 

CXXFLAGS = -O0 -g -Wall -I.\ 
    -std=c++11 -mlittle-endian -mthumb -mcpu=cortex-m4 -mthumb-interwork \ 
    -mfpu=fpv4-sp-d16 -mfloat-abi=hard \ 
    $(INCLUDES) -DUSE_STDPERIPH_DRIVER 

SEMIHOSTING_FLAGS = --specs=rdimon.specs -lc -lrdimon 

LDSCRIPT = stm32_flash.ld 
LDFLAGS += -T$(LDSCRIPT) -mthumb -mcpu=cortex-m4 

$(BIN): $(ELF) 
    $(OBJCOPY) -O binary $< $@ 

$(HEX): $(ELF) 
    $(OBJCOPY) -O ihex $< $@ 

$(ELF): $(OBJECTS) 
    $(LD) $(LDFLAGS) $(CFLAGS) $(SEMIHOSTING_FLAGS) -o $@ $(OBJECTS) $(LDLIBS) 
    $(SIZE) $@ 

$(BUILDDIR)/%.o: %.c 
    mkdir -p $(dir $@) 
    $(CXX) -c $(CXXFLAGS) $< -o $@ 

$(BUILDDIR)/%.o: %.S 
    mkdir -p $(dir $@) 
    $(CXX) -c $(CXXFLAGS) $< -o $@ 

flash: $(BIN) 
    st-flash write $(BIN) 0x8000000 

debug: $(ELF) 
    $(GDB) -tui $(ELF) 

openocd: $(ELF) 
    openocd -f board/stm32f4discovery.cfg 

all: $(HEX) $(BIN) $(ELF) 

functions: all 

.PHONY: clean 
clean: 
    rm -rf build 

编辑：我删除了其他依赖，离开LibraryHacks和主，并根据whichone完整的错误消息首先它仍然给了我同样的错误

mkdir -p build//*Removed*/ 
arm-none-eabi-g++ -c -O0 -g -Wall -I. -std=c++11 -mlittle-endian -mthumb -mcpu=cortex-m4 -mthumb-interwork -mfpu=fpv4-sp-d16 -mfloat-abi=hard -I../common/STM32F4xx -Iinc -I../common/CMSIS -I../common/STM32F4xx_StdPeriph_Driver/inc -Ilib/inc -Isrc -I. -DUSE_STDPERIPH_DRIVER /*Removed*/startup_stm32f4xx.S -o build//*Removed*/startup_stm32f4xx.o 
mkdir -p build//*Removed*/ 
arm-none-eabi-g++ -c -O0 -g -Wall -I. -std=c++11 -mlittle-endian -mthumb -mcpu=cortex-m4 -mthumb-interwork -mfpu=fpv4-sp-d16 -mfloat-abi=hard -I../common/STM32F4xx -Iinc -I../common/CMSIS -I../common/STM32F4xx_StdPeriph_Driver/inc -Ilib/inc -Isrc -I. -DUSE_STDPERIPH_DRIVER /*Removed*/system_stm32f4xx.c -o build//*Removed*/system_stm32f4xx.o 
make: *** No rule to make target `build//*Removed*/LibraryHacks.o', needed by `build/hx8352a-lcd.elf'. Stop. 

Answer 1

这条规则：

$(BUILDDIR)/%.o: %.c 

描述了如何从foo.c创建文件$(BUILDDIR)/foo.o。但是你现在想编译一个.cpp文件。只是将配方中的编译器变量从$(CC)更改为$(CXX)不会更改目标或先决条件的描述！您需要添加一个新规则告诉make去编译.cpp文件：

$(BUILDDIR)/%.o: %.cpp 
     mkdir -p $(dir $@) 
     $(CXX) -c $(CXXFLAGS) $< -o $@ 

此外，你应该放回%.c食谱$(CC)编译调用;用C++编译器编译C代码通常不是一个好主意。