'''
wget http://download.savannah.nongnu.org/releases/exosip/libexosip2-5.2.1.tar.gz
wget http://ftp.gnu.org/gnu/osip/libosip2-5.2.1.tar.gz
wget https://www.openssl.org/source/old/1.0.0/openssl-1.0.0s.tar.gz
wget https://c-ares.org/download/c-ares-1.18.1.tar.gz --no-check-certificate
tar -zxvf *.gz
cd /root/gb28181/c-ares-1.18.1
./configure
make -j8
make install
cd /root/gb28181/libosip2-5.2.1
./configure
make -j8
make install
cd /root/gb28181/libexosip2-5.2.1
./configure
make -j8
make install
'''
