Linux IW 移植

一、准备工具：
       iw.tar.bz2:  
      
       libnl:
       ~tgr/libnl/
二、交叉编译libnl

./configure --prefix=./install/ CC=arm-linux-gcc --host=arm
make
make instal

三、进入iw目录

export PKG_CONFIG_PATH=./install/lib/pkgconfig:$PKG_CONFIG_PATH
make CC=arm-linux-gcc

四、生成iw命令
五、如果出现
      libnl-3.2.21/install/lib/libnl-3.a(socket.o): In function `nl_write_lock':
      libnl-3.2.21/lib/../include/netlink-private/netlink.h:237: undefined reference to `pthread_rwlock_wrlock'

及如下错误
      install/lib/libnl-3.a(utils.o): In function `nl_prob2int':

      libnl-3.2.21/lib/utils.c:392: undefined reference to `rint'

      collect2: ld returned 1 exit status

解决方法：
      修改iw-3.7/Makefile
      增加LDFLAGS += -lpthread -lm