Makefile总是执行CFLAGS的默认命令

Question

我目前正在使用minGW和conemu控制台构建基于msp430 gcc的c plus plus程序。     SUPPORT_FILE_DIRECTORY =“/ c / ti / msp430_gcc / include”

SOURCES=blink.cpp
OBJECTS=$(SOURCES:.cpp=.o)
DEVICE  = msp430g2553
CC      = msp430-elf-gcc
GDB     = msp430-elf-gdb

CFLAGS = -I $(SUPPORT_FILE_DIRECTORY) -mmcu=$(DEVICE) -O2 -g
LFLAGS = -L $(SUPPORT_FILE_DIRECTORY)

all: ${OBJECTS}
        $(CC) $(SOURCES) $(CFLAGS) $(LFLAGS) -o $(DEVICE).out

clean:
        rm $(OBJECTS)

如果我只使用print进行make，我总会得到以下输出

$ make --just-print
g++    -c -o blink.o blink.cpp
msp430-elf-gcc blink.cpp -I "/c/ti/msp430_gcc/include" -mmcu=msp430g2553 -O2 -g -L "/c/ti/msp430_gcc/include" -o msp430g2553.out

实际make失败并出现以下错误

g++    -c -o blink.o blink.cpp
    blink.cpp:21:20: fatal error: msp430.h: No such file or directory
     #include <msp430.h>
                        ^
    compilation terminated.
    mingw32-make: *** [<builtin>: blink.o] Error 1

进行了额外的观察，如果目标文件已经存在，则不会发生此错误。