>>> Emerging (1 of 1) dev-python/matplotlib-1.4.2::gentoo
 * matplotlib-1.4.2.tar.gz SHA256 SHA512 WHIRLPOOL size ;-) ...                                                                                                    [ ok ]
>>> cfg-update-1.8.2-r1: Skipping checksum index updating...
>>> Unpacking source...
>>> Unpacking matplotlib-1.4.2.tar.gz to /var/tmp/portage/dev-python/matplotlib-1.4.2/work
>>> Source unpacked in /var/tmp/portage/dev-python/matplotlib-1.4.2/work
>>> Preparing source in /var/tmp/portage/dev-python/matplotlib-1.4.2/work/matplotlib-1.4.2 ...
 * Will copy sources from /var/tmp/portage/dev-python/matplotlib-1.4.2/work/matplotlib-1.4.2
 * python3_3: copying to /var/tmp/portage/dev-python/matplotlib-1.4.2/work/matplotlib-1.4.2-python3_3
 * python2_7: copying to /var/tmp/portage/dev-python/matplotlib-1.4.2/work/matplotlib-1.4.2-python2_7
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-python/matplotlib-1.4.2/work/matplotlib-1.4.2 ...
 * python3_3: running distutils-r1_run_phase python_configure
 * python2_7: running distutils-r1_run_phase python_configure
 * python2_7: running distutils-r1_run_phase python_configure_all
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-python/matplotlib-1.4.2/work/matplotlib-1.4.2 ...
 * python3_3: running distutils-r1_run_phase python_compile
/usr/bin/python3.3 setup.py build build --build-lib=/var/tmp/portage/dev-python/matplotlib-1.4.2/work/matplotlib-1.4.2-python3_3/build/build/lib
============================================================================
Edit setup.cfg to change the build options

BUILDING MATPLOTLIB
            matplotlib: yes [1.4.2]
                python: yes [3.3.5 (default, Aug 26 2014, 14:36:50)  [GCC
                        4.7.3]]
              platform: yes [linux]

REQUIRED DEPENDENCIES AND EXTENSIONS
                 numpy: yes [version 1.9.0]
                   six: yes [using six version 1.8.0]
              dateutil: yes [using dateutil version 2.2]
                  pytz: yes [using pytz version 2014.10]                                                                                                        [132/1891]
               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 2.0.3]
                 pycxx: yes [Official versions of PyCXX are not compatible
                        with matplotlib on Python 3.x, since they lack
                        support for the buffer object.  Using local copy]
                libagg: yes [pkg-config information for 'libagg' could not
                        be found. Using local copy.]
              freetype: yes [version 2.5.5]
                   png: yes [version 1.6.16]
                 qhull: yes [pkg-config information for 'qhull' could not be
                        found. Using local copy.]

OPTIONAL SUBPACKAGES
           sample_data: yes [installing]
              toolkits: yes [installing]
                 tests: yes [nose 0.11.1 or later is required to run the
                        matplotlib test suite.  pip/easy_install may attempt
                        to install it after matplotlib. / using
                        unittest.mock]
        toolkits_tests: yes [nose 0.11.1 or later is required to run the
                        matplotlib test suite.  pip/easy_install may attempt
                        to install it after matplotlib. / using
                        unittest.mock]

OPTIONAL BACKEND EXTENSIONS
                macosx: no  [Mac OS-X only]
                qt5agg: no  [PyQt5 not found]
^C

Exiting on signal 2