busybox的代码采用静态编译，所以动态编译的wireless tool无法使用，故添加到busybox中来，前面blog中已经介绍了tree的添加，所以此处只添加代码。
把所有的命令都添加到busybox/networking/
arp.c httpd_indexcgi.c ip.c iwlib.o nc_bloaty.c slattach.o vconfig.o arping.c httpd.o ipcalc.c iwlist.8 nc.c tc.c wget.c arping.o httpd_post_upload.txt ipcalc.o iwlist.c nc.o tcpudp.c wget.o arp.o httpd_ssi.c ip.o iwlist.o netstat.c tcpudp.o wireless.10.h brctl.c ifconfig.c isrv.c iwmulticall.c netstat.o tcpudp_perhost.c wireless.11.h brctl.o ifconfig.o isrv.h iwpriv.8 nslookup.c tcpudp_perhost.h wireless.12.h built-in.o ifenslave.c isrv_identd.c iwpriv.c nslookup.o tcpudp_perhost.o wireless.13.h Config.in ifenslave.o isrv_identd.o iwpriv.o ntpd.c telnet.c wireless.14.h Config.src ifplugd.c isrv.o iwspy.8 ntpd.o telnetd.c wireless.15.h dnsd.c ifplugd.o iwconfig.8 iwspy.c ntpd_simple.c telnetd.ctrlSQ.patch wireless.16.h dnsd.o ifrename.8 iwconfig.c iwspy.o ping.c telnetd.o wireless.17.h ether-wake.c ifrename.c iwconfig.o Kbuild ping.o telnet.o wireless.18.h ether-wake.o ifrename.o iwevent.8 Kbuild.src pscan.c tftp.c wireless.19.h ftpd.c iftab.5 iwevent.c lib.a pscan.o tftp.o wireless.20.h ftpd.o ifupdown.c iwevent.o libiproute route.c traceroute.c wireless.21.h ftpgetput.c ifupdown.o iwgetid.8 libiw.so.29 route.o traceroute.o wireless.22.h ftpgetput.o inetd.c iwgetid.c macaddr.c sample_enc.c tunctl.c wireless.7 hostname.c inetd.o iwgetid.o MakefileMake sample_pm.c tunctl.o wireless.h hostname.o interface.c iwlib.c nameif.c sample_priv_addr.c udhcp zcip.c httpd.c interface.o iwlib.h nameif.o slattach.c vconfig.c zcip.o
1，在miscutils目录下添加.c文件，函数名要与其它.c文件里面的函数名的格式保持一致，即命令名tree_main()，刚下载下来的时候是main，修改为tree_main即可。
2,修改编译文件，因为仅添加.c源文件，busybox编译系统不知道有新的代码添加进来，make的时候也不会编译tree.c文件，所以要修改Config.src文件（添加命令的整个过程跟添加内核驱动类似--内核是Kconfig）：
config IWCONFIG bool "iwconfig" default y help iwconfig the wireless config IFRENAME bool "ifrename" default y help iwconfig the wireless config IWEVENT bool "iwevent" default y help iwconfig the wireless config IWGETID bool "iwgetid" default y help iwconfig the wireless config IWLIST bool "iwlist" default y help iwconfig the wireless config IWPRIV bool "iwpriv" default y help iwconfig the wireless config IWSPY bool "iwspy" default y help iwconfig the wireless
3,修改编译文件Kbuild.src,编译tree命令需要这个几个文件。
lib-$(CONFIG_IWCONFIG) += iwlib.o iwconfig.o lib-$(CONFIG_IFRENAME) += iwlib.o ifrename.o lib-$(CONFIG_IWEVENT) += iwlib.o iwevent.o lib-$(CONFIG_IWGETID) += iwlib.o iwgetid.o lib-$(CONFIG_IWLIST) += iwlib.o iwlist.o lib-$(CONFIG_IWPRIV) += iwlib.o iwpriv.o lib-$(CONFIG_IWSPY) += iwlib.o iwspy.o
4,修改/include/applets.src.h文件
IF_IWCONFIG(APPLET(iwconfig, _BB_DIR_BIN, _BB_SUID_DROP)) IF_IFRENAME(APPLET(ifrename, _BB_DIR_BIN, _BB_SUID_DROP)) IF_IWEVENT(APPLET(iwevent, _BB_DIR_BIN, _BB_SUID_DROP)) IF_IWGETID(APPLET(iwgetid, _BB_DIR_BIN, _BB_SUID_DROP)) IF_IWLIST(APPLET(iwlist, _BB_DIR_BIN, _BB_SUID_DROP)) IF_IWPRIV(APPLET(iwpriv, _BB_DIR_BIN, _BB_SUID_DROP)) IF_IWSPY(APPLET(iwspy, _BB_DIR_BIN, _BB_SUID_DROP))
5,为命令添加帮助信息，以便使用--help的时候查阅，此处None可以随便修改 vim usage.src.h
#define iwconfig_trivial_usage "None" #define iwconfig_full_usage "None" #define ifrename_trivial_usage "None" #define ifrename_full_usage "None" #define iwevent_trivial_usage "None" #define iwevent_full_usage "None" #define iwgetid_trivial_usage "None" #define iwgetid_full_usage "None" #define iwlist_trivial_usage "None" #define iwlist_full_usage "None" #define iwpriv_trivial_usage "None" #define iwpriv_full_usage "None" #define iwspy_trivial_usage "None" #define iwspy_full_usage "None"
6,make
7,make install
我把可以使用的roots文件系统，压缩上传到资源里面。
