I did install g++-multilib and a few other packages in order to get the build forward. My build finally failed when trying to link the "doom3" executable due to

I did install g++-multilib and a few other packages in order to get the build forward. My build finally failed when trying to link the "doom3" executable due to the lack of 32 bit libs for zlib and curl (maybe others too). I tried to use a very unofficial Ubuntu utility called getlibs (http://frozenfox.freehostia.com/cappy http://frozenfox.freehostia.com/cappy) but that didn't really help, the library search path was wrong and the correct libs were not found.