$ python setup.py build
============================================================================
BUILDING MATPLOTLIB
            matplotlib: 0.98pre
                python: 2.4.4 (#2, Apr  5 2007, 20:11:18)  [GCC 4.1.2
                        20061115 (prerelease) (Debian 4.1.1-21)]
              platform: linux2

REQUIRED DEPENDENCIES
                 numpy: 1.0.4
             freetype2: 9.10.3

OPTIONAL BACKEND DEPENDENCIES
                libpng: 1.2.15beta5
               Tkinter: Tkinter: 39220, Tk: 8.4, Tcl: 8.4
              wxPython: 2.6.3.2
                        * Could not find wxPython headers in any of
                        * '/usr/lib/wx/include/gtk2-unicode-release-2.6',
                        * '/usr/include/wx-2.6'
                  Gtk+: gtk+: 2.8.20, glib: 2.12.4, pygtk: 2.8.6, pygobject:
                        [pre-pygobject]
                    Qt: Qt: 3.3.6, PyQt: 3.16
                   Qt4: no
                 Cairo: 1.2.0

OPTIONAL DATE/TIMEZONE DEPENDENCIES
              datetime: present, version unknown
              dateutil: present, version unknown
                  pytz: 2006p

OPTIONAL USETEX DEPENDENCIES
                dvipng: 1.9
           ghostscript: 8.15.3
                 latex: 3.141592
               pdftops: 3.01

EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
             configobj: matplotlib will provide
      enthought.traits: matplotlib will provide

[Edit setup.cfg to suppress the above messages]
============================================================================
running build
running build_py
copying lib/matplotlib/mpl-data/matplotlibrc -> build/lib.linux-i686-2.4/matplotlib/mpl-data
copying lib/matplotlib/mpl-data/matplotlib.conf -> build/lib.linux-i686-2.4/matplotlib/mpl-data
running build_ext
building 'matplotlib.backends._wxagg' extension
C compiler: gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O2 -Wall -Wstrict-prototypes -fPIC

compile options: '-DGTK_NO_CHECK_CASTS -D__WXGTK__ -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D_LARGEFILE_SOURCE=1 -DNO_GCC_PRAGMA -I/usr/include/libpng12 -I/usr/local/include -I/usr/include -I. -I/var/lib/python-support/python2.4/numpy/core/include -Isrc -Iagg24/include -I. -I/usr/include/freetype2 -I/usr/local/include -I/usr/include -I. -I/usr/lib/wx/include/gtk2-unicode-release-2.6 -I/usr/include/wx-2.6 -I/usr/include/python2.4 -c'
gcc: src/_wxagg.cpp
cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
In file included from /usr/include/python2.4/Python.h:8,
                 from ./CXX/WrapPython.h:47,
                 from ./CXX/Extensions.hxx:48,
                 from src/_backend_agg.h:8,
                 from src/_wxagg.cpp:48:
/usr/include/python2.4/pyconfig.h:851:1: warning: "_POSIX_C_SOURCE" redefined
In file included from /usr/include/string.h:26,
                 from /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/cstring:52,
                 from src/_wxagg.cpp:38:
/usr/include/features.h:150:1: warning: this is the location of the previous definition
src/_wxagg.cpp:55:34: error: wx/wxPython/wxPython.h: No such file or directory
src/_wxagg.cpp: In member function 'Py::Object _wxagg_module::convert_agg_to_wx_image(const Py::Tuple&)':
src/_wxagg.cpp:103: error: 'wxPyConstructObject' was not declared in this scope
src/_wxagg.cpp: In member function 'Py::Object _wxagg_module::convert_agg_to_wx_bitmap(const Py::Tuple&)':
src/_wxagg.cpp:125: error: 'wxPyConstructObject' was not declared in this scope
src/_wxagg.cpp: In function 'void init_wxagg()':
src/_wxagg.cpp:253: error: 'wxPyCoreAPI_IMPORT' was not declared in this scope
/var/lib/python-support/python2.4/numpy/core/include/numpy/__multiarray_api.h: At global scope:
/var/lib/python-support/python2.4/numpy/core/include/numpy/__multiarray_api.h:943: warning: 'int _import_array()' defined but not used
cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
In file included from /usr/include/python2.4/Python.h:8,
                 from ./CXX/WrapPython.h:47,
                 from ./CXX/Extensions.hxx:48,
                 from src/_backend_agg.h:8,
                 from src/_wxagg.cpp:48:
/usr/include/python2.4/pyconfig.h:851:1: warning: "_POSIX_C_SOURCE" redefined
In file included from /usr/include/string.h:26,
                 from /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/cstring:52,
                 from src/_wxagg.cpp:38:
/usr/include/features.h:150:1: warning: this is the location of the previous definition
src/_wxagg.cpp:55:34: error: wx/wxPython/wxPython.h: No such file or directory
src/_wxagg.cpp: In member function 'Py::Object _wxagg_module::convert_agg_to_wx_image(const Py::Tuple&)':
src/_wxagg.cpp:103: error: 'wxPyConstructObject' was not declared in this scope
src/_wxagg.cpp: In member function 'Py::Object _wxagg_module::convert_agg_to_wx_bitmap(const Py::Tuple&)':
src/_wxagg.cpp:125: error: 'wxPyConstructObject' was not declared in this scope
src/_wxagg.cpp: In function 'void init_wxagg()':
src/_wxagg.cpp:253: error: 'wxPyCoreAPI_IMPORT' was not declared in this scope
/var/lib/python-support/python2.4/numpy/core/include/numpy/__multiarray_api.h: At global scope:
/var/lib/python-support/python2.4/numpy/core/include/numpy/__multiarray_api.h:943: warning: 'int _import_array()' defined but not used
error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O2 -Wall -Wstrict-prototypes -fPIC -DGTK_NO_CHECK_CASTS -D__WXGTK__ -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D_LARGEFILE_SOURCE=1 -DNO_GCC_PRAGMA -I/usr/include/libpng12 -I/usr/local/include -I/usr/include -I. -I/var/lib/python-support/python2.4/numpy/core/include -Isrc -Iagg24/include -I. -I/usr/include/freetype2 -I/usr/local/include -I/usr/include -I. -I/usr/lib/wx/include/gtk2-unicode-release-2.6 -I/usr/include/wx-2.6 -I/usr/include/python2.4 -c src/_wxagg.cpp -o build/temp.linux-i686-2.4/src/_wxagg.o" failed with exit status 1