Chromium VSCode YCM setup failing due to old libstdc++ ?

[James Cook]

Can someone help with a Goobuntu libstdc++ problem so I can use YCM with Chromium?

I'm trying to set up you-complete-me for VSCode for chromium using the instructions at:

https://chromium.googlesource.com/chromium/src/+/lkcr/docs/vscode.md#useful-extensions

However, when I start it I get this error:

Ycm startup failed. Please check your ycmd or python path. Detail: Unexpected error while loading the YCM core library.

Adding the VSCode setting "ycmd.debug": true reveals this error in the output panel:

[ycm stderr] 2017-08-17 15:41:14,734 - ERROR - /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /usr/local/google/home/jamescook/.ycmd/ycmd/../libclang.so.4)

Traceback (most recent call last):

  File "/usr/local/google/home/jamescook/.ycmd/ycmd/server_utils.py", line 96, in CompatibleWithCurrentCore

    ycm_core = ImportCore()

  File "/usr/local/google/home/jamescook/.ycmd/ycmd/server_utils.py", line 88, in ImportCore

    import ycm_core as ycm_core

ImportError: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /usr/local/google/home/jamescook/.ycmd/ycmd/../libclang.so.4)

Indeed I don't have that GLIBCXX:

strings /usr/lib/x86_64-linux-gnu/libstdc++.so.6 | grep GLIBCXX

...

GLIBCXX_3.4.17

GLIBCXX_3.4.18

GLIBCXX_3.4.19

GLIBCXX_DEBUG_MESSAGE_LENGTH

I'm on Goobuntu Trusty:

DISTRIB_DESCRIPTION="Ubuntu 14.04.5 LTS"

Unfortunately this about as far as I can get on my limited knowledge of linux configuration. Any suggestions?

James

[Nico Weber]

The ycm config script was buggy, jbroman has a fix for this that I think landed earlier today, so syncing might be enough. If it's still in the cq, you can grab it off his gerrit issues.

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[Jeremy Roman]

This looks to me like an issue with dynamic linking of the YouCompleteMe core itself (which is built against the system libstdc++, IIRC); the issue I resolved was with the compile flags passed to libclang to analyze a particular Chromium source file (which builds with our bundled libc++).

[James Cook]

Any idea if there's either a way to install a newer libstdc++ on my box, or force YCM to compile itself against a different version?