Where do I find libcgraph?

[Ahmed]

Hi:

I'm trying to install pygraphviz on my CentOS7 machine, however, when I try it I get the following error

[root@localhost pygraphviz-1.3.1]# python setup.py install
running install
Trying pkg-config
Package libcgraph was not found in the pkg-config search path.
Perhaps you should add the directory containing `libcgraph.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libcgraph' found
Traceback (most recent call last):
  File "setup.py", line 87, in <module>
    tests_require=['nose>=0.10.1', 'doctest-ignore-unicode>=0.1.0',],
  File "/usr/lib64/python2.7/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/usr/lib64/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/usr/lib64/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "/tmp/viz/pygraphviz-1.3.1/setup_commands.py", line 44, in modified_run
    self.include_path, self.library_path = get_graphviz_dirs()
  File "/tmp/viz/pygraphviz-1.3.1/setup_extra.py", line 121, in get_graphviz_dirs
    include_dirs, library_dirs = _pkg_config()
  File "/tmp/viz/pygraphviz-1.3.1/setup_extra.py", line 44, in _pkg_config
    output = S.check_output(['pkg-config', '--libs-only-L', 'libcgraph'])
  File "/usr/lib64/python2.7/subprocess.py", line 575, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['pkg-config', '--libs-only-L', 'libcgraph']' returned non-zero exit status 1

I have the following repos on my yum directory.

[root@localhost pygraphviz-1.3.1]# ls /etc/yum.repos.d/
adobe-linux-x86_64.repo  CentOS-Debuginfo.repo  CentOS-Vault.repo   epel.repo           google-talkplugin.repo   mysql-community-source.repo
CentOS-Base.repo         CentOS-fasttrack.repo  docker-main.repo    epel-testing.repo   logstash-forwarder.repo  nux-dextop.repo
CentOS-CR.repo           CentOS-Sources.repo    elasticsearch.repo  google-chrome.repo  mysql-community.repo     slack.repo

When I try to look for a package for a libcgraph, yum couldn't find it.

[root@localhost pygraphviz-1.3.1]# yum search libcgraph
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: centos.sonn.com
 * epel: reflector.westga.edu
 * extras: mirror.netdepot.com
 * nux-dextop: mirror.li.nux.ro
 * updates: mirror.netdepot.com
Warning: No matches found for: libcgraph
No matches found
[root@localhost pygraphviz-1.3.1]# yum search libcgvc
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: centos.sonn.com
 * epel: reflector.westga.edu
 * extras: mirror.netdepot.com
 * nux-dextop: mirror.li.nux.ro
 * updates: mirror.netdepot.com
Warning: No matches found for: libcgvc
No matches found

Also, when I try to install pygraphviz via pip, I still get an error. Example:

[root@localhost pygraphviz-1.3.1]# pip install pygraphviz
Collecting pygraphviz
  Using cached pygraphviz-1.3.1.tar.gz
Installing collected packages: pygraphviz
  Running setup.py install for pygraphviz
    Complete output from command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip-build-e1zoFI/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-BW6Hsy-record/install-record.txt --single-version-externally-managed --compile:
    running install
    Package libcgraph was not found in the pkg-config search path.
    Perhaps you should add the directory containing `libcgraph.pc'
    to the PKG_CONFIG_PATH environment variable
    No package 'libcgraph' found
    Trying pkg-config
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-e1zoFI/pygraphviz/setup.py", line 87, in <module>
        tests_require=['nose>=0.10.1', 'doctest-ignore-unicode>=0.1.0',],
      File "/usr/lib64/python2.7/distutils/core.py", line 152, in setup
        dist.run_commands()
      File "/usr/lib64/python2.7/distutils/dist.py", line 953, in run_commands
        self.run_command(cmd)
      File "/usr/lib64/python2.7/distutils/dist.py", line 972, in run_command
        cmd_obj.run()
      File "setup_commands.py", line 44, in modified_run
        self.include_path, self.library_path = get_graphviz_dirs()
      File "setup_extra.py", line 121, in get_graphviz_dirs
        include_dirs, library_dirs = _pkg_config()
      File "setup_extra.py", line 44, in _pkg_config
        output = S.check_output(['pkg-config', '--libs-only-L', 'libcgraph'])
      File "/usr/lib64/python2.7/subprocess.py", line 575, in check_output
        raise CalledProcessError(retcode, cmd, output=output)
    subprocess.CalledProcessError: Command '['pkg-config', '--libs-only-L', 'libcgraph']' returned non-zero exit status 1

    ----------------------------------------
Command "/usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip-build-e1zoFI/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-BW6Hsy-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-e1zoFI/pygraphviz

Where do I find libcgraph source code, or how to do I install pygraphviz on CentOS 7?

[r-barnes]

I there a graphviz package? On Debian this installs libcgraph6. I then get the same problem you do.

[hagberg]

You need both the main graphvz package and the development package. For Debian that is probably graphviz-dev and for CentOS try graphviz-devel.