无法使用VirtualEnv在OSX 10.8.4上安装matplotlib

Question

I tried every single link that is available on the web but still I am getting following error:

Edit setup.cfg to change the build options

BUILDING MATPLOTLIB
            matplotlib: yes [1.4.x]
                python: yes [2.7.5 (default, Jul 28 2013, 07:27:04)  [GCC
                        4.2.1 Compatible Apple LLVM 4.2 (clang-425.0.28)]]
              platform: yes [darwin]

REQUIRED DEPENDENCIES AND EXTENSIONS
                 numpy: yes [version 1.7.1]
              dateutil: yes [dateutil was not found. It is required for date
                        axis support. pip/easy_install may attempt to
                        install it after matplotlib.]
               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 [pyparsing was not found. It is required for
                        mathtext support. pip/easy_install may attempt to
                        install it after matplotlib.]
                 pycxx: yes [Couldn't import.  Using local copy.]
                libagg: yes [pkg-config information for 'libagg' could not
                        be found. Using local copy.]
              freetype: no  [pkg-config information for 'freetype2' could
                        not be found.]
                   png: yes [pkg-config information for 'libpng' could not
                        be found. Using unknown version.]

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]

OPTIONAL BACKEND EXTENSIONS
                macosx: yes [darwin]
                qt4agg: no  [PyQt4 not found]
               gtk3agg: no  [Requires pygobject to be installed.]
             gtk3cairo: no  [Requires cairo to be installed.]
                gtkagg: no  [Requires pygtk]
                 tkagg: yes [version 81008]
                 wxagg: no  [requires wxPython]
                   gtk: no  [Requires pygtk]
                   agg: yes [installing]
                 cairo: no  [cairo not found]
             windowing: no  [Microsoft Windows only]

OPTIONAL LATEX DEPENDENCIES
                dvipng: no
           ghostscript: no
                 latex: no
               pdftops: no
============================================================================
                        * The following required packages can not be built:
                        * freetype

Here are the things that I tried:

I successfully install numpy and scipy in my native python environment. Since I was not able to install matplotlib I decided to switch to virtualenv .

Here are the links:

• Instructions from matplotlib.org
• Blog post from this is the green room
• stackoverflow

Every single option ended up with the above issue. Any help would be great.

Answer 1

If haven't yet install brew with:

ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go/install)"

and then do:

brew install freetype
brew install libpng

The last line is probably not needed but just to be sure. Then try again with pip .

EDIT: I also suggest you try the conda installer.