1. Install the client
Search for Package Control and select YcmdCompletion
2 . Install the server
There are two ways to start the server, manual and automatic.
2.1 Manual method:
Compile the ycmd service. This needs to be compiled by yourself on the corresponding platform. It will download clang and other libraries. Compilation method original text
Install compilation tools
sudo apt-get install build-essential cmake python-dev
Download the ycmd source code. I downloaded the code directly to the User directory of sublime. After the build, the clang library will be automatically downloaded.
cd ~/.config/sublime-text-3/User git clone git@github.com:Valloric/ycmd.git && cd ycmd git submodule update --init --recursive ./build.py --all
In about half an hour, the installation was successful. The author updates frequently. Now only one library, ycm_core.so, will be generated after compilation. There was also a ycm_client_support.so before, which is now Merged. 
Next, start the server manually (note that the current directory is always under the ycmd directory). Server startup requires a configuration file ycmd/default_settings.json, each It will be automatically deleted after the first startup, so we first copy a copy to the current directory
cp ycmd/default_settings.json .
and then open it to modify two items, global_ycm_extra_confSpecify the location of the default .ycm_extra_conf.py andhmac_secretSet the HMAC key.
Default.ycm_extra_conf.pyDownload, used to configure the completion function settings, specific parameters can be found in the document.ycm_extra_conf.py configuration
wget https://raw.githubusercontent.com/Valloric/ycmd/master/cpp/ycm/.ycm_extra_conf.py
Generate HMAC key
Command Palette > Ycmd: Create HMAC keys
The server is written in python, so there is a __main__.py file under ycmd/ycmd, and we can start it.
python ycmd --port 8888 --options_file ycmd/default_settings.json
The server has been started. Next, configure the sublime-text client and open the Ycmd configuration filePreferences > Package Settings > YcmdCompletion > Settings - Default, modify ycmd_port port.
The biggest advantage of this method is that the server can be deployed remotely or made into a Docker image. You only need to specify the ip and port and you can use it at will.
2.2 Automatic method
Open the Ycmd configuration file Preferences > Package Settings > YcmdCompletion > Settings - Default, just set 3 parameters.
/* ===== YCMD AUTO START MODE =====*/ "use_auto_start_localserver": 1, "ycmd_path": "/home/will/.config/sublime-text-3/Packages/User/ycmd/ycmd", "python_binary_path": "/usr/bin/python",
3. Start Sublime and test
Set the completion triggering rules, open Preferences -> Settings - More -> Syntax Specific - User, insert Code below. In this way, when entering , ::, ->, automatic completion can be triggered. I added /, which can trigger path completion. Otherwise, you need to enter matching characters to complete.
{
"auto_complete_selector": "source - (comment, string.quoted)",
"auto_complete_triggers": [
{"selector": "source.c++", "characters": "."},
{"selector": "source.c++", "characters": "::"},
{"selector": "source.c++", "characters": "->"}，
{"selector": "source.c++", "characters": "/"}
]
}
ycmd command list, including restarting the server, displaying error list, etc.
Command Palette > Ycmd: