wifi网卡dhcp动态获取ip

c. dhcp : 使得WIFI网卡动态获取IP
c.1 编译、安装
tar xzf dhcp-4.2.5-P1.tar.gz
cd dhcp-4.2.5-P1
./configure --host=arm-linux ac_cv_file__dev_random=yes


cd bind
修改Makefile:
./configure BUILD_CC=gcc ac_cv_file__dev_random=yes --host=arm-linux --disable-kqueue


tar xzf bind.tar.gz
cd bind-9.8.4-P2
修改 lib/export/dns/Makefile.in 
gen: ${srcdir}/gen.c
        ${CC} ${ALL_CFLAGS} ${LDFLAGS} -o $@ ${srcdir}/gen.c ${LIBS}
改为
gen: ${srcdir}/gen.c
        ${BUILD_CC} ${ALL_CFLAGS} ${LDFLAGS} -o $@ ${srcdir}/gen.c ${LIBS}


cd ../..
make DESTDIR=$PWD/tmp install


把文件复制到NFS
sudo cp bin/* /work/nfs_root/fs_mini_mdev_new/bin/
sudo cp sbin/* /work/nfs_root/fs_mini_mdev_new/sbin/
sudo cp etc/dhclient.conf.example //work/nfs_root/fs_mini_mdev_new/etc/dhclient.conf
sudo cp etc/dhcpd.conf.example //work/nfs_root/fs_mini_mdev_new/etc/dhcpd.conf


sudo cp client/scripts/linux /work/nfs_root/fs_mini_mdev_new/etc/dhclient-script
chmod +x /work/nfs_root/fs_mini_mdev_new/etc/dhclient-script
并修改
#!/bin/bash
改为
#!/bin/sh




c.2 使用：
mkdir -p /var/db
wpa_supplicant -B -c/etc/wpa_wpa2.conf  -iwlan0
dhclient wlan0