linux C驱动编译找不到路径

Question

kl7100@keli-tq:~/HW/driver/kerner-2/02-kernel/spi-oled$ make
arm-linux-gnueabihf-gcc -C /home/kl7100/HW/driver/kerner-2/02-kernel/imx_4.1.15_2.0.0_ga_rc3 M=/home/kl7100/HW/driver/kerner-2/02-kernel/spi-oled modules
arm-linux-gnueabihf-gcc: error: M=/home/kl7100/HW/driver/kerner-2/02-kernel/spi-oled: No such file or directory
arm-linux-gnueabihf-gcc: error: modules: No such file or directory
Makefile:10: recipe for target 'all' failed
make: *** [all] Error 1

请问下为什么会报找不到这个文件路径的错误呢？这个路径是存在的而且是用pwd获取的，makefile源文件贴上了，有没有知道的?求指教！

KERN_DIR = /home/kl7100/HW/driver/kerner-2/02-kernel/imx_4.1.15_2.0.0_ga_rc3
CURRENT_PATH := $(shell pwd)  #模块所在的当前路径
  
CROSS_COMPILE = arm-linux-gnueabihf-gcc

obj-m := spi_oled_drv.o
#obj-m    += spi_info_iMx6q.o

all:
    $(CROSS_COMPILE) -C $(KERN_DIR) M=$(CURRENT_PATH) modules 

clean:
    $(CROSS_COMPILE) -C $(KERN_DIR) M=$(CURRENT_PATH) clean
    rm -rf modules.order

Answer 1

可能是因为当前路径中包含空格，导致编译命令无法正确识别路径。建议将路径中的空格改为下划线或者使用双引号将路径括起来，例如：

CURRENT_PATH := "/home/kl7100/HW/driver/kerner-2/02-kernel/spi-oled"