安装ROS时出错

Question

我按照ROS官方Mac安装文档，到了Resolving Dependencies这一步，出现“Failed to build pygraphviz”的错误。屏幕信息如下：

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 /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c "import setuptools, tokenize;__file__='/private/tmp/pip-build-KKFcFY/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-xRCOPn-record/install-record.txt --single-version-externally-managed --compile:
    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 "<string>", line 1, in <module>
      File "/private/tmp/pip-build-KKFcFY/pygraphviz/setup.py", line 87, in <module>
        tests_require=['nose>=0.10.1', 'doctest-ignore-unicode>=0.1.0',],
      File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/core.py", line 151, in setup
        dist.run_commands()
      File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 953, in run_commands
        self.run_command(cmd)
      File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 972, in run_command
        cmd_obj.run()
      File "/private/tmp/pip-build-KKFcFY/pygraphviz/setup_commands.py", line 44, in modified_run
        self.include_path, self.library_path = get_graphviz_dirs()
      File "/private/tmp/pip-build-KKFcFY/pygraphviz/setup_extra.py", line 121, in get_graphviz_dirs
        include_dirs, library_dirs = _pkg_config()
      File "/private/tmp/pip-build-KKFcFY/pygraphviz/setup_extra.py", line 44, in _pkg_config
        output = S.check_output(['pkg-config', '--libs-only-L', 'libcgraph'])
      File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 573, 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 "/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c "import setuptools, tokenize;__file__='/private/tmp/pip-build-KKFcFY/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-xRCOPn-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/tmp/pip-build-KKFcFY/pygraphviz

我该怎么办？

Answer 1

根据你的日志，可能你需要安装包libcgraph。

在 Ubuntu 中，尝试：

apt-cache search libcgraph

输出是：

libcgraph6 - rich set of graph drawing tools - cgraph library

你可以安装它：

sudo apt-get install libcgraph6

在 Mac 上，您可能需要找到相同的软件包并安装它。
希望它有效。