Hey Ernesto, > I built pjsip 2.2.1 succesfully in a Debian 7 x86 box (a VM). This is a pre- > packaged VM from http://vagrantcloud.com (vagrant init > puppetlabs/debian-7.4-32-nocm) > > Linux localhost 3.2.0-4-686-pae #1 SMP Debian 3.2.54-2 i686 GNU/Linux > $ cat /etc/issue > Debian GNU/Linux 7 \n \l > > This are the steps I did follow to build the library: > > tar xvjf pjproject-2.2.1.tar.bz > cd pjproject-2.2.1 > ./configure --disable-video --disable-ffmpeg --disable-v4l2 > make dep > make This is essentially what I had done. Again, I compiled with no video, but had just used the '--disable-video' option (rather than the additional '--disable-ffmpeg --disable-v4l2' options). What I don't quite get is how PJSIP 2.1.0 compiles with no issues. However, I suspect you are right in that some dependency is missing somewhere. Indeed, I have read (and re-read, and re-read.....) the wiki links you have point to, but am still no further along. The build I have I have is almost the same as yours (albeit, a slightly newer release): $ cat /proc/version Linux version 3.2.0-4-686-pae (debian-kernel at lists.debian.org) (gcc version 4.6.3 (Debian 4.6.3-14) ) #1 SMP Debian 3.2.60-1+deb7u1 $ cat /etc/issue Debian GNU/Linux 7 \n \l However, as this build is nothing special, so I can scrap it and download the appliance you have point to. Regards, Chris Swinney ?