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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Unable to install matplotlib 3.0.3 on Windows - freetype and libpng dependencies fail","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nIt seems that on Windows 10 OS the latest matplotlib fails to install due to dependencies missing.\r\n\r\n**Code for reproduction**\r\n\r\nFrom command line (assuming python.exe for 3.7 is on your PATH):\r\n```\r\npython -m pip install matplotlib==3.0.3\r\n```\r\n\r\n**Actual outcome**\r\n\r\n```\r\nCollecting matplotlib (from -r ./build/functional-test-requirements.txt (line 5))\r\n  Downloading https://files.pythonhosted.org/packages/1e/20/2032ad99f0dfe0f60970941af36e8d0942d3713f442bb3df37ac35d67358/matplotlib-2.2.4.tar.gz (37.0MB)\r\n    Complete output from command python setup.py egg_info:\r\n    ============================================================================\r\n    Edit setup.cfg to change the build options\r\n    \r\n    BUILDING MATPLOTLIB\r\n                matplotlib: yes [2.2.4]\r\n                    python: yes [2.7.14 (v2.7.14:84471935ed, Sep 16 2017,\r\n                            20:25:58) [MSC v.1500 64 bit (AMD64)]]\r\n                  platform: yes [win32]\r\n    \r\n    REQUIRED DEPENDENCIES AND EXTENSIONS\r\n                     numpy: yes [version 1.16.2]\r\n          install_requires: yes [handled by setuptools]\r\n                    libagg: yes [pkg-config information for 'libagg' could not\r\n                            be found. Using local copy.]\r\n                  freetype: no  [The C/C++ header for freetype\r\n                            (freetype2\\ft2build.h) could not be found.  You may\r\n                            need to install the development package.]\r\n                       png: no  [The C/C++ header for png (png.h) could not be\r\n                            found.  You may need to install the development\r\n                            package.]\r\n                     qhull: yes [pkg-config information for 'libqhull' could not\r\n                            be found. Using local copy.]\r\n    \r\n    OPTIONAL SUBPACKAGES\r\n               sample_data: yes [installing]\r\n                  toolkits: yes [installing]\r\n                     tests: no  [skipping due to configuration]\r\n            toolkits_tests: no  [skipping due to configuration]\r\n    \r\n    OPTIONAL BACKEND EXTENSIONS\r\n                    macosx: no  [Mac OS-X only]\r\n                    qt5agg: no  [PySide2 not found; PyQt5 not found]\r\n                    qt4agg: no  [PySide not found; PyQt4 not found]\r\n                   gtk3agg: no  [Requires pygobject to be installed.]\r\n                 gtk3cairo: no  [Requires cairocffi or pycairo to be installed.]\r\n                    gtkagg: no  [Requires pygtk]\r\n                     tkagg: yes [installing; run-time loading from Python Tcl /\r\n                            Tk]\r\n                     wxagg: no  [requires wxPython]\r\n                       gtk: no  [Requires pygtk]\r\n                       agg: yes [installing]\r\n                     cairo: no  [cairocffi or pycairo not found]\r\n                 windowing: yes [installing]\r\n    \r\n    OPTIONAL LATEX DEPENDENCIES\r\n                    dvipng: no\r\n               ghostscript: no\r\n                     latex: no\r\n                   pdftops: no\r\n    \r\n    OPTIONAL PACKAGE DATA\r\n                      dlls: no  [skipping due to configuration]\r\n    \r\n    ============================================================================\r\n                            * The following required packages can not be built:\r\n                            * freetype, png\r\n                            * Please check http://gnuwin32.sourceforge.net/packa\r\n                            * ges/freetype.htm for instructions to install\r\n                            * freetype\r\n                            * Please check http://gnuwin32.sourceforge.net/packa\r\n                            * ges/libpng.htm for instructions to install png\r\n    \r\n    ----------------------------------------\r\nCommand \"python setup.py egg_info\" failed with error code 1 in c:\\users\\vssadm~1\\appdata\\local\\temp\\pip-install-lkfxm9\\matplotlib\\\r\n```\r\n\r\n**Expected outcome**\r\n\r\nMatplotlib is installed without incident.\r\n\r\n**Matplotlib version**\r\n\r\n  * Operating system: Windows 10\r\n  * Matplotlib version: 3.0.3\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`):\r\n  * Python version: 2.7, 3.5, 3.6, 3.7\r\n  * Jupyter version (if applicable): 1.0.0\r\n  * Other libraries: \r\n\r\n---\r\nSee our extension's CI [output for more detail if you wish here](https://vscode-python.visualstudio.com/VSCode-Python/_build/results?buildId=3967).\r\n\r\n","author":{"url":"https://github.com/d3r3kk","@type":"Person","name":"d3r3kk"},"datePublished":"2019-03-01T05:41:52.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/13555/matplotlib/issues/13555"}