install dependencies
'''
yum install lynx bison php-mbstring php-pear php-gd php-xml libsepol-devel libtiff-devel openssl-devel subversion e2fsprogs-devel keyutils-libs-devel krb5-devel libogg libogg-devel libtool libtool-ltdl-devel kernel-headers kernel-devel tftp-server ncurses-devel sendmail sendmail-cf sox newt-devel libtiff-devel subversion doxygen texinfo mysql-connector-odbc unixODBC-devel sox gnutls-devel ncurses-devel net-snmp-devel neon-devel uuid-devel libuuid-devel audiofile-devel gtk2-devel speex-devel gsm-devel sqlite-devel perl-DateManip spandsp-devel freetds-devel iksemel-devel corosynclib-devel lua-devel radiusclient-ng-devel libxslt-devel portaudio-devel libical-devel gmime-devel bluez-libs-devel jack-audio-connection-kit-devel libedit-devel jansson-devel libsrtp-devel
'''