Youcompleteme: YouCompeteMe unavailable:YCM support libs too old,please recompile

[deardeng]

HI,
today I update the ycm,I compile the clang not long ago.

clang -v
clang version 3.4.1 (tags/RELEASE_34/dot1-final)
Target: i386-pc-linux-gnu
Thread model: posix
Found candidate GCC installation: /usr/lib/gcc/i686-redhat-linux/4.8.2
Selected GCC installation: /usr/lib/gcc/i686-redhat-linux/4.8.2

but now I open vim ,it’s an error.
YouCompeteMe unavailable:YCM support libs too old,please recompile

the ycmdebuginfo:
Printing YouCompleteMe debug information...
to deal with function 99_DebugInfo There was an error:
Line 2:
Traceback (most recent call last):
File "", line 1, in
NameError: name 'ycm_state' is not defined
E858: Eval did not return a valid python object

So,I need to recompile the clang or what ?
thank you.

[vheon]

No you need to recompile ycmd. See the docs.

[lacombar]

FWIW, the quick answer which did the trick for me is to update the submodules:

git submodule update --recursive

To this extend, the docs is of no-help whatsoever, as it only mentions a fresh install, and not an update... It would be nice if install.sh could be smart enough to do this automatically...

[iamaziz]

From the docs, to recompile YCM means to compile it again just like when you installed it for the first time:

with semantic support for C-family:

cd ~/.vim/bundle/YouCompleteMe
./install.py --clang-completer

or, without semantic support for C-family:

cd ~/.vim/bundle/YouCompleteMe
./install.py

[lacombar]

@iamaziz your point being ?

[iamaziz]

@lacombar recompile :-)

[lacombar]

but it's not enough. When you update, you will have to upgrade the submodules, as well as recompile.

[lacombar]

.... and there is no documentation about this.

[iamaziz]

Aha, not sure! however all I needed was to get rid of that annoying warning message
YouCompleteMe unavailable: YCM support libs too old, PLEASE RECOMPILE
that pops up every time I open vim. I did the recompile mentioned in the docs and it worked.

[lacombar]

as I originally did, but it didn't work until I upgraded all the submodules

[primitivorm]

$rm -fr ~/.vim/bundle/YouCompleteMe
and reinstall with Vundle

then:
cd ~/.vim/bundle/YouCompleteMe
./install.py --clang-completer

works for me :)

[naught101]

@lacombar is correct. Sometimes when you update YCM, you also have to update all submodules. If you don't, the installation will complete successfully, but the error message won't go away.