Compile plPython for Python 3.2

I am trying to build plPython for Python 3.2 64bit under Windows 7 with
Microsoft Windows SDK v7.0 (all tools are 64bit). I downloaded Python from
python.org
I get this error:

"C:\Users\user\Desktop\postgresql-9.0.4\pgsql.sln" (default target) (1) ->
(PLs\plpython target) ->
.\src\pl\plpython\plpython.c(3210): error C2201: 'PyInit_plpy' : must have
ex
ternal linkage in order to be exported/imported

"C:\Users\user\Desktop\postgresql-9.0.4\pgsql.sln" (default target) (1) ->
(interfaces\ecpg target) ->
Project : error PRJ0019: A tool returned an error code from "Running bison
on
src\interfaces\ecpg\preproc\preproc.y"

How can I fix this?