如何在 ec2 实例上安装 pkg-config

问题描述

从我的 ec2 实例中，我试图运行一个需要 html5-parse 的 python 脚本。当我尝试运行 python3 -m pip install html5_parser 时，我得到，

Collecting html5_parser
  Using cached https://files.pythonhosted.org/packages/a6/78/6a80c13be6c02fd2fb615b473a6ceff5b28bafca184f428ab197f677fd7a/html5-parser-0.4.9.tar.gz
    Complete output from command python setup.py egg_info:
    Package libxml-2.0 was not found in the pkg-config search path.
    Perhaps you should add the directory containing `libxml-2.0.pc'
    to the PKG_CONfig_PATH environment variable
    No package 'libxml-2.0' found
    Traceback (most recent call last):
      File "<string>",line 1,in <module>
      File "/tmp/pip-build-bo946lpx/html5-parser/setup.py",line 79,in <module>
        include_dirs=include_dirs(),File "/tmp/pip-build-bo946lpx/html5-parser/build.py",line 94,in include_dirs
        return [x[2:] for x in pkg_config('libxml-2.0','--cflags-only-I')]
      File "/tmp/pip-build-bo946lpx/html5-parser/build.py",line 76,in pkg_config
        val = subprocess.check_output([PKGCONfig,pkg] + list(args)).decode('utf-8')
      File "/usr/lib/python3.6/subprocess.py",line 356,in check_output
        **kwargs).stdout
      File "/usr/lib/python3.6/subprocess.py",line 438,in run
        output=stdout,stderr=stderr)
    subprocess.CalledProcessError: Command '['pkg-config','libxml-2.0','--cflags-only-I']' returned non-zero exit status 1.
    
    ----------------------------------------
Command "python setup.py egg_info" Failed with error code 1 in /tmp/pip-build-bo946lpx/html5-parser/

如何在 ubuntu 上安装 pkg-config 以便我最终可以安装 html5-parser？

解决方法

html5-parser 可以通过 apt 在 Ubuntu 中安装：

sudo add-apt-repository universe
sudo apt update
sudo apt install python3-html5-parser

,

对于 html5_parser，您需要 lxml。所以开始 https://lxml.de/installation.html#requirements：

sudo apt-get install libxml2-dev libxslt-dev python-dev

其他见https://html5-parser.readthedocs.io/en/latest/#unix：

pip install --no-binary lxml html5-parser