tce-load -i freetype-dev libpng-dev python3-numpy python3-dateutil py3tz python3-cycler py3parsing py3gobject-dev gtk3-dev gtk3-gir

cd matplotlib-1.5.1

cp setup.cfg.template setup.cfg
Edit
tests = False
toolkits_tests = False

python3 setup.py build
sudo python3 setup.py install


BUILDING MATPLOTLIB
            matplotlib: yes [1.5.1]
                python: yes [3.3.6 (default, Sep 13 2015, 18:39:05)  [GCC
                        4.9.1]]
              platform: yes [linux]

REQUIRED DEPENDENCIES AND EXTENSIONS
                 numpy: yes [version 1.10.1]
              dateutil: yes [using dateutil version 2.5.3]
                  pytz: yes [using pytz version 2016.4]
                cycler: yes [using cycler version 0.10.0]
               tornado: yes [tornado was not found. It is required for the
                        WebAgg backend. pip/easy_install may attempt to
                        install it after matplotlib.]
             pyparsing: yes [using pyparsing version 2.1.1]
                libagg: yes [pkg-config information for 'libagg' could not
                        be found. Using local copy.]
              freetype: yes [version 2.5.3]
                   png: yes [version 1.6.13]
                 qhull: yes [pkg-config information for 'qhull' could not be
                        found. Using local copy.]

OPTIONAL SUBPACKAGES
           sample_data: yes [installing]
              toolkits: yes [installing]
                 tests: no  [skipping due to configuration]
        toolkits_tests: no  [skipping due to configuration]

OPTIONAL BACKEND EXTENSIONS
                macosx: no  [Mac OS-X only]
                qt5agg: no  [PyQt5 not found]
                qt4agg: no  [PySide not found; PyQt4 not found]
               gtk3agg: yes [installing, version 3.7.16]
             gtk3cairo: yes [installing, version 3.7.16]
                gtkagg: no  [Requires pygtk]
                 tkagg: no  [TKAgg requires Tkinter.]
                 wxagg: no  [requires wxPython]
                   gtk: no  [Requires pygtk]
                   agg: yes [installing]
                 cairo: yes [installing, pycairo version 1.10.0]
             windowing: no  [Microsoft Windows only]

OPTIONAL LATEX DEPENDENCIES
                dvipng: no
           ghostscript: no
                 latex: no
               pdftops: no

OPTIONAL PACKAGE DATA
                  dlls: no  [skipping due to configuration]