常連

pygraphvizをうまくインストール出来ませんので対処法を教えていただきたいです。

1.graphvizはpkgを使ってインストールしました。
2.そのあとでpipでpygraphvizをインストールしようとしたら以下のようにエラーが出ました。
```ここに言語を入力
Collecting pygraphviz
  Using cached pygraphviz-1.3.1.zip
Building wheels for collected packages: pygraphviz
  Running setup.py bdist_wheel for pygraphviz ... error
  Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/c0/0kzgkqw92qq4wplfvdqx_czh0000gn/T/pip-build-uuALX9/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d /var/folders/c0/0kzgkqw92qq4wplfvdqx_czh0000gn/T/tmpeNTXyZpip-wheel- --python-tag cp27:
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.macosx-10.10-intel-2.7
  creating build/lib.macosx-10.10-intel-2.7/pygraphviz
  copying pygraphviz/__init__.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz
  copying pygraphviz/agraph.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz
  copying pygraphviz/graphviz.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz
  copying pygraphviz/release.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz
  copying pygraphviz/version.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz
  creating build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/__init__.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_attribute_defaults.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_attributes.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_clear.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_drawing.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_edge_attributes.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_graph.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_html.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_layout.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_node_attributes.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_readwrite.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_string.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_subgraph.py -> build/lib.macosx-10.10-intel-2.7/pygraphviz/tests
  copying pygraphviz/tests/test_unicode.py -> build/lib.macosx-10.10-intel-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 -> build/lib.macosx-10.10-intel-2.7/pygraphviz
  copying pygraphviz/graphviz_wrap.c -> build/lib.macosx-10.10-intel-2.7/pygraphviz
  running build_ext
  building 'pygraphviz._graphviz' extension
  creating build/temp.macosx-10.10-intel-2.7
  creating build/temp.macosx-10.10-intel-2.7/pygraphviz
  cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c pygraphviz/graphviz_wrap.c -o build/temp.macosx-10.10-intel-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 'cc' failed with exit status 1
  
  ----------------------------------------
  Failed building wheel for pygraphviz
  Running setup.py clean for pygraphviz
Failed to build pygraphviz
Installing collected packages: pygraphviz
  Running setup.py install for pygraphviz ... error
    Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/c0/0kzgkqw92qq4wplfvdqx_czh0000gn/T/pip-build-uuALX9/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/c0/0kzgkqw92qq4wplfvdqx_czh0000gn/T/pip-FKX_ud-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 "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/c0/0kzgkqw92qq4wplfvdqx_czh0000gn/T/pip-build-uuALX9/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/c0/0kzgkqw92qq4wplfvdqx_czh0000gn/T/pip-FKX_ud-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/var/folders/c0/0kzgkqw92qq4wplfvdqx_czh0000gn/T/pip-build-uuALX9/pygraphviz/
```
3.次に[このサイト](https://www.monotalk.xyz/blog/pygraphviz%E3%82%92os-x-yosemite%E3%81%AEvirtualenv%E7%92%B0%E5%A2%83%E3%81%AB%E3%82%A4%E3%83%B3%E3%82%B9%E3%83%88%E3%83%BC%E3%83%AB%E3%81%99%E3%82%8B/)に書いてある手続きを行ってsetup.pyを用いたインストールを試みたところ以下のエラーが出ました。
4.環境は mac=10.10.5, python=2.7.10, graphviz=2.36.0 です。
＊graphvizのインストール先は3のサイトと一致していました。
```
python setup.py install
running install
Trying pkg-config
Failed to find pkg-config
include_dirs=/usr/local/include/graphviz/
library_dirs=/usr/local/lib/graphviz/
running build
running build_py
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
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'
running build_ext
building 'pygraphviz._graphviz' extension
cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -I/usr/local/include/graphviz/ -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c pygraphviz/graphviz_wrap.c -o build/temp.macosx-10.10-intel-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 'cc' failed with exit status 1
```

ご回答よろしくお願いします。

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