Emacs code completion ycmd

1.下载ycmd server端
# git clone https://github.com/ycm-core/ycmd.git
# git submodule update --init --recursive

2.配置支持的语言
# ./build.py --all //支持所有go语言报错，暂时无解
# ./build.py --clang-completer # --java-completer --system-libclang

3.安装emacs需要的插件
M-X package-install RET ycmd company-ycmd flycheck-ycmd

4.配置
;;YCMD
(require 'ycmd)
;;(add-hook 'c++-mode-hook 'company-mode)
(add-hook 'c++-mode-hook 'ycmd-mode)
;;下载ycmd的路径
(set-variable 'ycmd-server-command
    '("python3" "/Users/xxx/github/ycmd"))
(set-variable 'ycmd-global-config "/Users/xxx/github/ycmd/.ycm_extra_conf.py")

(require 'company-ycmd)
(company-ycmd-setup)
(provide 'init-ycmd)
(add-hook 'c++-mode-hook 'company-mode)