* Package:    dev-python/matplotlib-2.2.2-r1
 * Repository: gentoo
 * Maintainer: sci@gentoo.org python@gentoo.org
 * USE:        abi_x86_64 amd64 cairo elibc_glibc kernel_linux python_targets_python2_7 python_targets_python3_5 qt5 userland_GNU wxwidgets
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking matplotlib-2.2.2.tar.gz to /var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work
>>> Source unpacked in /var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work
>>> Preparing source in /var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2 ...
 * Applying matplotlib-2.2.2-doc-make.patch ...
 [ ok ]
 * Will copy sources from /var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2
 * python2_7: copying to /var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2-python2_7
 * python3_5: copying to /var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2-python3_5
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2 ...
 * python2_7: running distutils-r1_run_phase python_configure
 * python3_5: running distutils-r1_run_phase python_configure
 * python3_5: running distutils-r1_run_phase python_configure_all
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2 ...
 * python2_7: running distutils-r1_run_phase python_compile
python2.7 setup.py build --build-lib=/var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2-python2_7/build/lib
============================================================================
Edit setup.cfg to change the build options

BUILDING MATPLOTLIB
            matplotlib: yes [2.2.2]
                python: yes [2.7.14 (default, May 17 2018, 12:19:31)  [GCC
                        7.3.0]]
              platform: yes [linux2]

REQUIRED DEPENDENCIES AND EXTENSIONS
                 numpy: yes [version 1.13.3]
      install_requires: yes [handled by setuptools]
                libagg: yes [Requires patches that have not been merged
                        upstream. Using local copy.]
              freetype: yes [version unknown]
                   png: yes [version 1.6.34]
                 qhull: yes [pkg-config information for 'libqhull' 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: yes [installing, Qt: 5.9.5, PyQt: 5.10.1; PySide2
                        not found]
                qt4agg: no  [skipping due to configuration]
               gtk3agg: no  [skipping due to configuration]
             gtk3cairo: no  [skipping due to configuration]
                gtkagg: no  [skipping due to configuration]
                 tkagg: yes [installing; run-time loading from Python Tcl /
                        Tk]
Unable to access the X Display, is $DISPLAY set properly?
 * ERROR: dev-python/matplotlib-2.2.2-r1::gentoo failed (compile phase):
 *   (no error message)
 * 
 * Call stack:
 *     ebuild.sh, line  124:  Called src_compile
 *   environment, line 4255:  Called distutils-r1_src_compile
 *   environment, line 1223:  Called _distutils-r1_run_foreach_impl 'python_compile'
 *   environment, line  523:  Called python_foreach_impl 'distutils-r1_run_phase' 'python_compile'
 *   environment, line 3699:  Called multibuild_foreach_variant '_python_multibuild_wrapper' 'distutils-r1_run_phase' 'python_compile'
 *   environment, line 2785:  Called _multibuild_run '_python_multibuild_wrapper' 'distutils-r1_run_phase' 'python_compile'
 *   environment, line 2783:  Called _python_multibuild_wrapper 'distutils-r1_run_phase' 'python_compile'
 *   environment, line  873:  Called distutils-r1_run_phase 'python_compile'
 *   environment, line 1216:  Called python_compile
 *   environment, line 3229:  Called wrap_setup 'distutils-r1_python_compile' '--build-lib=/var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2-python2_7/build/lib'
 *   environment, line 5108:  Called distutils-r1_python_compile '--build-lib=/var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2-python2_7/build/lib'
 *   environment, line 1091:  Called esetup.py 'build' '--build-lib=/var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2-python2_7/build/lib'
 *   environment, line 1792:  Called die
 * The specific snippet of code:
 *       "${@}" || die "${die_args[@]}";
 * 
 * If you need support, post the output of `emerge --info '=dev-python/matplotlib-2.2.2-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-python/matplotlib-2.2.2-r1::gentoo'`.
 * The complete build log is located at '/var/log/portage/dev-python:matplotlib-2.2.2-r1:20180521-080002.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-python/matplotlib-2.2.2-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-python/matplotlib-2.2.2-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2-python2_7'
 * S: '/var/tmp/portage/dev-python/matplotlib-2.2.2-r1/work/matplotlib-2.2.2'