Other options
-------------
There are still some other options which can be used to handle special
cases.
The `extra_objects' option is a list of object files to be passed to
the linker. These files must not have extensions, as the default
extension for the compiler is used.
`extra_compile_args' and `extra_link_args' can be used to specify
additional command line options for the compiler resp. the linker
command line.
`export_symbols' is only useful on windows, it can contain a list of
symbols (functions or variables) to be exported. This option is not
needed when building compiled extensions: the `initmodule' function
will automatically be added to the exported symbols list by Distutils.