Freepbx 12 asterisk 13 with Webrtc ..any options before compile?

hello folks .
I’m looking forward to have freepbx 12 asterisk 13 centos 6.x
i just wanted to ask , is there any specific packages or options needed to be compiled before installation ?

i see freepbx can support all the process from GUI , but I’m wondering if i need specific flags to be enabled in asterisk menu select or other packages .

let me know