If you are interested, here is a set of cbp files which are a compromise between standard wx31_64.cbps and Andrew Cotrell's versions. They need to set global variables and work for 32/64 bits, 3.0, 3.1, 3.2, and future wxwidgets versions. Just update need to be adapted (which is not the case for Andrew Cotrell versions because they are integrated in each cbp.)