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Asked: 2019-12-10 06:55:28 +0800 CST

"you need a C compiler to build uWSGI" - but gcc is present

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I get the following error:

~$ sudo apt install build-essential python2.7-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
build-essential is already the newest version (12.4ubuntu1).
python2.7-dev is already the newest version (2.7.15-4ubuntu4~18.04.2).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
~$ which gcc
/usr/bin/gcc
~$ gcc
gcc: fatal error: no input files
compilation terminated.
~$ pip install uwsgi==1.9.20 --index-url=http://192.168.1.200/pypackages/simple/ --trusted-host 192.168.1.200
Collecting uwsgi==1.9.20
  Downloading http://192.168.1.200/pypackages/simple/uwsgi/uwsgi-1.9.20.tar.gz (731kB)
    100% |████████████████████████████████| 737kB 12.1MB/s 
Building wheels for collected packages: uwsgi
  Running setup.py bdist_wheel for uwsgi ... error
  Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-u0AKpd/uwsgi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmp63xyFzpip-wheel- --python-tag cp27:
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.linux-x86_64-2.7
  copying uwsgidecorators.py -> build/lib.linux-x86_64-2.7
  installing to build/bdist.linux-x86_64/wheel
  running install
  using profile: buildconf/default.ini
  detected include path: ['/usr/lib/gcc/x86_64-linux-gnu/7/include', '/usr/local/include', '/usr/lib/gcc/x86_64-linux-gnu/7/include-fixed', '/usr/include/x86_64-linux-gnu', '/usr/include']
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
    File "/tmp/pip-build-u0AKpd/uwsgi/setup.py", line 109, in <module>
      distclass=uWSGIDistribution,
    File "/usr/lib/python2.7/dist-packages/setuptools/__init__.py", line 129, in setup
      return distutils.core.setup(**attrs)
    File "/usr/lib/python2.7/distutils/core.py", line 151, in setup
      dist.run_commands()
    File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands
      self.run_command(cmd)
    File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
      cmd_obj.run()
    File "/usr/lib/python2.7/dist-packages/wheel/bdist_wheel.py", line 240, in run
      self.run_command('install')
    File "/usr/lib/python2.7/distutils/cmd.py", line 326, in run_command
      self.distribution.run_command(command)
    File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
      cmd_obj.run()
    File "/tmp/pip-build-u0AKpd/uwsgi/setup.py", line 71, in run
      conf = uc.uConf(get_profile())
    File "uwsgiconfig.py", line 627, in __init__
      raise Exception("you need a C compiler to build uWSGI")
  Exception: you need a C compiler to build uWSGI

The error says I do not have a C compiler but gcc is installed.

software-installation python gcc uwsgi

1 Answers

  1. uwsgi is already in the repositories. It might not be version 1.9.20 but it should still work for your needs (and is basically the same uwsgi from PyPI except precompiled and installable).

    For installing it, and its Python 3 plugin, just run:

    sudo apt install uwsgi uwsgi-plugin-python3

    This will install uwsgi and the Python 3 plugin. You can then execute uwsgi --plugin=python3 ... as normal for running it directly.

    This said, if you don't want to run things yourself manually (though you may need to in some cases), you can also set up uwsgi configuiration files in /etc/uwsgi/*.ini and then start those services with sudo systemctl stop uwsgi && sudo systemctl start uwsgi and it'll run daemon-ized automatically. Documentation on that, however, is in uwsgi's documentation, and is too complex and in-depth for me to copy here. I use this to run three APIs for my employer on their infrastructure that're UWSGI based and have data passed into them from web endpoints authorized to access the API points, and it works pretty effectively.

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