Issue #2 resolved
linker flag for boost 1.5's libboost_system with cmake 2.8.4+
For boost 1.5+ libbost_system.so needs to be linked explicitely or you'll get the error.
/usr/bin/ld: CMakeFiles/ibex.dir/ibex.cpp.o: undefined reference to symbol '_ZN5boost6system15system_categoryEv' /usr/bin/ld: note: '_ZN5boost6system15system_categoryEv' is defined in DSO /usr/lib/libboost_system.so.1.52.0 so try adding it to the linker command line /usr/lib/libboost_system.so.1.52.0: could not read symbols: Invalid operation
Allegedly it is as easy as adding "system" to set(OGRE_BOOST_COMPONENTS ...) but it didn't work for me and I don't know enough about cmake to know why.