Just a short note for everyone who’s expecting a configure file in a Software he wants to build but there’s only a configure.ac file. This File is for the so called autoconf command which generates the configure file. Just run autoconf to generate it.
Please mind that you need to install the following packages for sucess:
autogen
autoconf
libtool
autoconf
If you miss one of those packages you might end up with the following error: configure.ac:3: error: possibly undefined macro
Sometimes you need to install some dependencies for the configure process. To do so run autoreconf --install