matplotlib/README.osx at master · benzea/matplotlib · GitHub

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Building mpl on OSX has proven to be a nightmare because of all the

different types of zlib, png and freetype that may be on your system.

The recommended and supported way to build is to use a third-party

package manager to install the required dependencies, and then

install matplotlib from source using the setup.py script. Two widely

used package managers are homebrew and MacPorts. The following

example illustrates how to install libpng and freetype using

homebrew.

Example usage::

brew install libpng freetype pkgconfig

If you are using MacPorts, execute the following instead:

Example usage::

port install libpng freetype

To install matplotlib from source, execute:

Example usage::

python setup.py install