Editing Using CMake on Windows with special requirements (section)

=== Using SWIG compiled with Cygwin while using Visual Studio for compilation of STIR ===
''STIR'' can use ''SWIG'' to generate an interface to Python (or soon MATLAB). You can download
''SWIG'' executables for Windows from its website. However, in case you want to use a brand-new
version of ''SWIG'', you will need to build it yourself. At present (end 2014), ''SWIG''
can only be build on Linux-type systems. You could try to use ''MSYS'' (after downloading
a number of packages), but it is easier with ''Cygwin'' (after installing autoconf, bison etc).
However, now you need to point CMake to the swig executable, which will only run if CMake will find your ''cygwin1.dll''. In addition, when building STIR, Visual Studio will need to run swig, so the recommended method is to add the location of the cygwin dll (which could be ''c:\cygwin64\bin'') to your system path ''before'' starting CMake.