title: Error while installing PyGraphviz (Mac OS X, Anaconda)
body: <p>I'm having trouble while installing PyGraphviz.
  I'm using Anaconda in Mac OS X.</p>
  
  <p>Error messages indicates some reasons, but I already checked out it is installed in anaconda directory. </p>
  
  <pre><code>Sundongui-MacBook-Pro:site-packages sundong$ pwd
  /Users/sundong/anaconda/lib/python2.7/site-packages
  Sundongui-MacBook-Pro:site-packages sundong$ pip install graphviz --upgrade
  Requirement already up-to-date: graphviz in /Users/sundong/anaconda/lib/python2.7/site-packages
  </code></pre>
  
  <p>According to the error messages, How can I change the the include_dirs and library_dirs variables in setup.py??</p>
  
  <p>Here is the error message that I meet</p>
  
  <pre><code>Sundongui-MacBook-Pro:anaconda sundong$ pip install pygraphviz
  Collecting pygraphviz
    Using cached pygraphviz-1.3.1.tar.gz
  Building wheels for collected packages: pygraphviz
    Running setup.py bdist_wheel for pygraphviz
    Complete output from command /Users/sundong/anaconda/bin/python -c "import setuptools;__file__='/private/var/folders/p6/rjy4tf353bzfy7gsl5jn_yvc0000gn/T/pip-build-bLb4AR/pygraphviz/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d /var/folders/p6/rjy4tf353bzfy7gsl5jn_yvc0000gn/T/tmpwR_08Dpip-wheel-:
    running bdist_wheel
    running build
    running build_py
    creating build
    creating build/lib.macosx-10.5-x86_64-2.7
    creating build/lib.macosx-10.5-x86_64-2.7/pygraphviz
    copying pygraphviz/__init__.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz
    copying pygraphviz/agraph.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz
    copying pygraphviz/graphviz.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz
    copying pygraphviz/release.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz
    copying pygraphviz/version.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz
    creating build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/__init__.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_attribute_defaults.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_attributes.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_clear.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_drawing.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_edge_attributes.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_graph.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_html.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_layout.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_node_attributes.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_readwrite.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_string.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_subgraph.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_unicode.py -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz/tests
    running egg_info
    writing pygraphviz.egg-info/PKG-INFO
    writing top-level names to pygraphviz.egg-info/top_level.txt
    writing dependency_links to pygraphviz.egg-info/dependency_links.txt
    warning: manifest_maker: standard file '-c' not found
  
    reading manifest file 'pygraphviz.egg-info/SOURCES.txt'
    reading manifest template 'MANIFEST.in'
    warning: no previously-included files matching '*~' found anywhere in distribution
    warning: no previously-included files matching '*.pyc' found anywhere in distribution
    warning: no previously-included files matching '.svn' found anywhere in distribution
    no previously-included directories found matching 'doc/build'
    writing manifest file 'pygraphviz.egg-info/SOURCES.txt'
    copying pygraphviz/graphviz.i -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz
    copying pygraphviz/graphviz_wrap.c -&gt; build/lib.macosx-10.5-x86_64-2.7/pygraphviz
    running build_ext
    building 'pygraphviz._graphviz' extension
    creating build/temp.macosx-10.5-x86_64-2.7
    creating build/temp.macosx-10.5-x86_64-2.7/pygraphviz
    gcc -fno-strict-aliasing -I/Users/sundong/anaconda/include -arch x86_64 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/sundong/anaconda/include/python2.7 -c pygraphviz/graphviz_wrap.c -o build/temp.macosx-10.5-x86_64-2.7/pygraphviz/graphviz_wrap.o
    pygraphviz/graphviz_wrap.c:2954:10: fatal error: 'graphviz/cgraph.h' file not found
    #include "graphviz/cgraph.h"
             ^
    1 error generated.
    error: command 'gcc' failed with exit status 1
  
    ----------------------------------------
    Failed building wheel for pygraphviz
  Failed to build pygraphviz
  Installing collected packages: pygraphviz
    Running setup.py install for pygraphviz
      Complete output from command /Users/sundong/anaconda/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/p6/rjy4tf353bzfy7gsl5jn_yvc0000gn/T/pip-build-bLb4AR/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/p6/rjy4tf353bzfy7gsl5jn_yvc0000gn/T/pip-qgosXm-record/install-record.txt --single-version-externally-managed --compile:
      running install
      Trying pkg-config
      Failed to find pkg-config
      Trying dotneato-config
      Failed to find dotneato-config
      Failed to find dotneato-config
  
      Your Graphviz installation could not be found.
  
              1) You don't have Graphviz installed:
                 Install Graphviz (http://graphviz.org)
  
              2) Your Graphviz package might incomplete.
                 Install the binary development subpackage (e.g. libgraphviz-dev or similar.)
  
              3) You are using Windows
                 There are no PyGraphviz binary packages for Windows but you might be
                 able to build it from this source.  See
                 http://networkx.lanl.gov/pygraphviz/reference/faq.html
  
              If you think your installation is correct you will need to manually
              change the include_dirs and library_dirs variables in setup.py to
              point to the correct locations of your graphviz installation.
  
              The current setting of library_dirs and include_dirs is:
      library_dirs=None
      include_dirs=None
  
      error: Error locating graphviz.
  
      ----------------------------------------
  Command "/Users/sundong/anaconda/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/p6/rjy4tf353bzfy7gsl5jn_yvc0000gn/T/pip-build-bLb4AR/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/p6/rjy4tf353bzfy7gsl5jn_yvc0000gn/T/pip-qgosXm-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/var/folders/p6/rjy4tf353bzfy7gsl5jn_yvc0000gn/T/pip-build-bLb4AR/pygraphviz
  </code></pre>