Problem installing 0.87.5

Folks,

I am trying to install matplotlib 0.87.5 by compiling it. I'm using
python 2.5 RC1 (yes - bleeding edge) on opensuse 10.1 on an amd64
chip. python 2.5rc1 and numpy 1.0b2. I'll try to install 1.0b5 but I
don't think that's the cause. I've made sure all the suse packages
needed for matplotlib are installed. However, I get gcc compiler
errors (using gcc 4.1) included below. Any thoughts?

GTK requires pygtk
TKAgg requires TkInter
GTKAgg requires pygtk
running install
running build
running build_py
running build_ext
building 'matplotlib._agg' extension
C compiler: gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O3 -Wall
-Wstrict-prototypes -fPIC

compile options: '-Iagg23/include -Isrc -Iswig
-I/usr/local/include/python2.5 -c'
gcc: src/agg.cxx
cc1plus: warning: command line option "-Wstrict-prototypes" is valid
for Ada/C/ObjC but not for C++
src/agg.cxx: In function 'int SWIG_Python_ConvertPtr(PyObject*,
void**, swig_type_info*, int)':
src/agg.cxx:1231: error: invalid conversion from 'const char*' to 'char*'
src/agg.cxx: In function 'void SWIG_Python_FixMethods(PyMethodDef*,
swig_const_info*, swig_type_info**, swig_type_info**)':
src/agg.cxx:27624: error: invalid conversion from 'const char*' to 'char*'
cc1plus: warning: command line option "-Wstrict-prototypes" is valid
for Ada/C/ObjC but not for C++
src/agg.cxx: In function 'int SWIG_Python_ConvertPtr(PyObject*,
void**, swig_type_info*, int)':
src/agg.cxx:1231: error: invalid conversion from 'const char*' to 'char*'
src/agg.cxx: In function 'void SWIG_Python_FixMethods(PyMethodDef*,
swig_const_info*, swig_type_info**, swig_type_info**)':
src/agg.cxx:27624: error: invalid conversion from 'const char*' to 'char*'
error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O3
-Wall -Wstrict-prototypes -fPIC -Iagg23/include -Isrc -Iswig
-I/usr/local/include/python2.5 -c src/agg.cxx -o
build/temp.linux-x86_64-2.5/src/agg.o" failed with exit status 1