please help my!

OS - AIX 5.3 64x
i have need to install Python 2.6

./configure --with-gcc

configure: WARNING: wchar.h: present but cannot be compiled
configure: WARNING: wchar.h:     check for missing prerequisite headers?
configure: WARNING: wchar.h: see the Autoconf documentation
configure: WARNING: wchar.h:     section "Present But Cannot Be 
Compiled"
configure: WARNING: wchar.h: proceeding with the preprocessor's result
configure: WARNING: wchar.h: in the future, the compiler will take 
precedence
configure: WARNING:     ## ---------------------------------------------
--- ##
configure: WARNING:     ## Report this to http://www.python.org/python-
bugs ##
configure: WARNING:     ## ---------------------------------------------
--- ##

 
make

In file included from Include/unicodeobject.h:120,
                 from Include/Python.h:85,
                 from ./Modules/python.c:3:
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/wchar.h:299: 
error: parse error before 'mbstate_t'
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/wchar.h:302: 
error: parse error before 'mbstate_t'
make: 1254-004 The error code from the last command is 1.

What can i do for correct it? please...