This directory contains a copy of SWIG 1.1p5-883 that has been heavily patched to do some things specific for wxPython. You do not need to build this version of SWIG if you do not plan on making any changes to wxPython's *.i files. However, if you set USE_SWIG=1 in setup.py then you *will* need to build this version of SWIG. To do so, just run: Unix: configure make Win32: nmake -f makefile.vc The executable created *does not* need to be installed as wxPython's setup.py expects to find it here in this directory. Also, the name of the executable has been renamed to wxswig to simplify having both versions of SWIG on the system.