A specific README located in the "./help" directory exists for each supported platforms. This is the definitive place to find informations about specific platforms. Note that osip is developped on a i386 linux and other architecture might be broken. Reports if one appears broken. Common Install process for UNIX. $> tar -xvzf libosip-x.x.x.tar.gz $> mkdir bld-linux $> CFLAGS="-I/usr/local/include/" ../configure $> make $> make install (as root...) I prefer to do: $> tar -xvzf libosip-0.X.X.tar.gz $> mkdir linux-build $> cd linux-build $> ../libosip-0.X.X/configure $> make $> make install Here is a list of options you can give to the 'configure' command line: configure --disable-mt ==> disable any thread support, flags: "-UOSIP_MT" configure --disable-debug ==> disable debug. flags: "-UENABLE_DEBUG" configure --disable-trace ==> disable the trace in the logfile. flags: "-UENABLE_TRACE" configure --prefix=/your/local ==> install in '$prefix' (default is /usr/local)