If when attempting to compile `linphone` you get this error when running ./configure –
error: libupnp >= 1.6 < 1.5 required. Then you can try what L Miller suggests and do: apt-get remove libupnp4-dev And then: apt-get install libupnp6-dev This seems to do the trick when compiling on Ubuntu 14.04. After upgrading this library I started over in the compiling instructions with autogen: - Compile linphone $ ./autogen.sh $ ./configure $ make && sudo make install $ sudo ldconfig If that still doesn't work then see http://akh1.blogspot.hk/2014/04/compiling-linphone-37-in-ubuntu.html
