Using Kamailio 4.2, CentOS 6.5, as per the documentation here:
https://github.com/sipwise/rtpengine
"Running make will compile the binary, which will be called rtpengine."
When trying to install rtpengine I got the following error when building
"daemon"
[root@ip-10-0-2-68 daemon]# make
Usage: awk [POSIX or GNU style options] -f progfile [--] file ...
Usage: awk [POSIX or GNU style options] [--] 'program' file ...
Looks like your awk doesn't understand the -e option. I've just
committed a patch to remove it, which should fix this: