CODEWITHSUNDEEP
pythonlinuxpython-2.7ubuntuvim
anmol porwal
anmol porwal

Reputation: 223

Difficulty with python while installing YouCompleteMe in vim

I've followed these instructions, in order to install YouCompleteMe in Vim, but when I issue:

./install.py --clang-completer

The following error message comes up:

Searching Python 2.7 libraries...
ERROR: found static Python library (/usr/local/lib/python2.7/config/libpython2.7.a) but a dynamic one is required. You must use a Python compiled with the --enable-shared flag. If using pyenv, you need to run the command:
  export PYTHON_CONFIGURE_OPTS="--enable-shared"
before installing a Python version.
Traceback (most recent call last):
  File "./install.py", line 44, in <module>
    Main()
  File "./install.py", line 33, in Main
    subprocess.check_call( [ python_binary, build_file ] + sys.argv[1:] )
  File "/usr/local/lib/python2.7/subprocess.py", line 540, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/usr/local/bin/python', u'/home/anmol/.vim/bundle/YouCompleteMe/third_party/ycmd/build.py', '--clang-completer']' returned non-zero exit status 1

and now I'm stuck, what should I do?

Upvotes: 11

Views: 7486

Answers (2)

dkasak
dkasak

Reputation: 2703

I checked YouCompleteMe's build system and it uses a custom build script that uses the Python module distutils to find the paths to Python's library and include directories. Your /usr/local/ installation of Python is probably included in your PATH variable before the official /usr installation so just running python probably runs your custom installation, making distutils return its directories.

To check whether this is true, try running which python. I assume it will return something like /usr/local/bin/python.

At this point, I see several options (in order of preference).

  1. Try running YCM's install script by specifying which Python executable should run it explicitly: /usr/bin/python ./install.py --clang-completer

    If you use any additional completers with YCM, you should add the appropriate flags to the above line (e.g. --js-completer for JavaScript completion).

  2. Edit the script third_party/ycmd/build.py in YouCompleteMe's plugin directory to hardcode the paths for your custom Python installation. For instance, you could replace the existing FindPythonLibraries function with the following:

    def FindPythonLibraries():
    return ('/usr/lib/python2.7/config-x86_64-linux-gnu/libpython2.7.so',
            '/usr/include/python2.7')

    Note that this will make it harder to update YouCompleteMe since you'll have to ensure it doesn't get overwritten when you update its source.

  3. Replace your custom installation of Python with one built as a shared library. The details of this will depend on how you installed the existing Python installation in the first place. You can check whether you installed it through a package by using dpkg -S /usr/local/lib/python2.7/config/libpython2.7.a. This command will tell you which package installed that file, unless you installed it manually (bypassing the package manager).
  4. Remove your custom /usr/local Python installation while ensuring you have a Python from the official repositories installed (packages python2.7 and libpython2.7).

In the long run, you would probably be better off by using the official Python packages.

Upvotes: 25

wrwrwr
wrwrwr

Reputation: 1066

The plugin builds for me on the same operating system. The relevant line from the configuration looks like this:

Found PythonLibs: /usr/lib/python2.7/config-x86_64-linux-gnu/libpython2.7.so

The shared object can be identified as belonging to libpython2.7 package:

apt-file search /usr/lib/python2.7/config-x86_64-linux-gnu/libpython2.7.so
libpython2.7: /usr/lib/python2.7/config-x86_64-linux-gnu/libpython2.7.so

So I would check if you have the file named, if not try sudo apt install libpython2.7, and otherwise try moving away the static version, or let us know how you installed Python.

Upvotes: 0

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