Prepare source code and tool chain

Environment: Linux Ubuntu 20.04 LTS

File List
1. OpenBFC_23.1_eCos.tar.bz2
The eCos source and modifications are both included.

2. gnutools321_06-23-2004.tgz
The file includes the toolchain for building eCos lib.

3. ecosenv.sh
Set the default environment parameters in Linux.

4. The application modules for the product as listed.
docsis3.1_NetSNMP.tar.bz2, Version 5.0.9
docsis3.1_OpenSSH.tar.bz2, Version 9.7p1
docsis3.1_OpenSSL.tar.bz2, Version 1.1.1w


Install toolchain
1. Change to root.
$ su

2. Install tool chain "gnutools321_06-23-2004.tgz" in Linux
$cd /usr/local/ecos20 
$tar xvzf gnutools321_06-23-2004.tgz 
$cd /usr/local
$chown -R root ecos20

Complile eCos Lib(s)
1 untar OpenBFC_23.1_eCos.tar.bz2 to /tmp/ecos20_lib
$ chmod +x ecosenv.sh
$ source ecosenv.sh
$ cd /tmp/ecos20_lib/rbb_cm_ecos/ecos-src/bcm33xx_ipv6
$ sh build.bash