Description of problem: ../../lib/libOgreMain.so.1.9.0: undefined reference to `void Ogre::ProgressiveMeshGenerator::addIndexDataImpl<unsigned short>(unsigned short*, unsigned short const*, std::vector<Ogre::ProgressiveMeshGenerator::PMVertex*, Ogre::STLAllocator<Ogre::ProgressiveMeshGenerator::PMVertex*, Ogre::CategorisedAllocPolicy<(Ogre::MemoryCategory)0> > >&, unsigned short)'
I looked at this previously and I think it might be that a template instance is not being generated any more with the newer gcc. This bug is likely related to the FTBFS status of several packages that use ogre.
Upstream fix: https://bitbucket.org/sinbad/ogre/commits/a24ac4afbbb9dc5ff49a61634af50da11ba8fb97/ Checked in and building.
Thanks for finding that. I went looking for something similar but was unable to find it.
No problem. Google must have finally indexed the right pages :)