看看我这个Makefile文件,为什么说内核中的结构没有定义

wuiiszsu

INCLUDE := ${HOME}/latestlinux/linux-2.6.17.6/include
#CFLAGS += -I$(INCLUDE)
#CFLAGS += -M
CFLAGS = -Wall
CFLAGS += -O2
CFLAGS += -I$(INCLUDE)
PWD :=(shell pwd)

OBJS = $(subst .c,.o,$(wildcard *.c))

usb (OBJS)
        gcc -o usb $(OBJS)
$(OBJS):%.o:%.c
        gcc $(CFLAGS) -c $<
clean:
        @rm -fv $(OBJS)


linux目录下有usb_gadget.h文件，但是用到里面的结构体时，
  struct usb_string str;
  struct usb_ep ep;

老提示
error: storage size of `str' isn't known
error: storage size of `ep' isn't known
error: storage size of `re' isn't known

futuregod

建议你看一下linux device driver third edition 是怎么写的.