=====Build flow=====
***GNU Cross-Platform Development Toolchain ***
1.Download buildroot-2.0.0.0 from http://buildroot.uclibc.org/
2.Customizing the target filesystem.
3.Use uClibc which is a tiny C standard library.
3.Make cross-compilation toolchain like arm-linux-gcc, etc.

***Module building***
1.Unpack module source code.
2.Modify makefile for building environment like platform, compiler or target.
3.Run make to build source code, then produce some binary files.

=====GPL source code list=====
armboot-1.1.0
autofs-3.1.7
boa
busybox-1.00
dosfstools-2.9
expat-2.0.0
gdb-6.0
inetutils-1.4.2
linux-2.4.26
mtd
pciutils-2.1.11
strace-4.5.1 
zlib-1.1.4 
autoip 
ftpd 
ftpmput 
net-tools-1.60 
ntpclient 
ppp-2.4.3 
pppoe 
RT2500-1.4.6.1 
smtpclient 
sysklogd 
rp-pppoe-3.5 

