OpenSIPS_Lab1:~# apt-get install make flex bison gcc libmysqlclient-dev mysql-server git
OpenSIPS_Lab1:~# cd /usr/src/
OpenSIPS_Lab1:~# git clone https://github.com/OpenSIPS/opensips.git -b 2.1 opensips_2_1
OpenSIPS_Lab1:~# cd opensips_2_1/
OpenSIPS_Lab1:~# make menuconfig