YouCompeleteMe is very powerful vim plugin for compeletion.

Unfortunately,the default vim you installed probably don't support YouCompeleteMe. After adding config entries in .vimrc for YCM,you may get the warning below when open vim:

youcompleteme unavailable: requires vim compiled with python (2.6+ or 3.3+) support

You need to build vim with python support. Follow this doc: Building Vim from source I'm using openSUSE,but this doc doesn't list zypper command to install prerequisites.

• install packages

zypper install libncurses5 libgnome-devel libgnomeui-devel libgtk-2_0-0 libatk-1_0-0 \  libbonoboui-devel libcairo2 libX11-devel libXpm-devel libXt-devel python \  
python-devel python3 python3-devel ruby-devel perl perl-devel lua51 lua51-devel git

• clone vim

git clone https://github.com/vim/vim.git

• config,build and install vim

cd vim 
./configure --with-features=huge \
            --enable-multibyte \
            --enable-rubyinterp \
            --enable-pythoninterp \
            --with-python-config-dir=/usr/lib/python2.7/config \
            --enable-perlinterp \
            --enable-luainterp \
            --enable-gui=gtk2 --enable-cscope --prefix=/usr

make VIMRUNTIMEDIR=/usr/share/vim/vim74
sudo make install

sudo update-alternatives --install /usr/bin/editor editor /usr/bin/vim 1
sudo update-alternatives --set editor /usr/bin/vim
sudo update-alternatives --install /usr/bin/vi vi /usr/bin/vim 1
sudo update-alternatives --set vi /usr/bin/vim

• build YCM

cd .vim/bundle/YouCompleteMe
zypper install gcc-c++ cmake
./install.py

Open vim and edit something to test it. Enjoy!