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在使用vim树形导航插件NERDtree时,启动vim总会提示:

The ycmd server SHUT DOWN (restart with ':YcmRestartServer'). YCM core library not detected; you need to compile YCM before using it. Follow the instructions in the documentation.

Fedora安装YCM

在Fedora平台编译安装YouCompleteMe方法参考YouCompleteMe A code-completion engine for Vim:

  • 安装开发工具和CMake
sudo dnf install automake gcc gcc-c++ kernel-devel cmake
  • 确保已经安装了Python头文件:
sudo dnf install python-devel python3-devel
  • 安装LLVM Clang(如果不安装系统clang,则):
sudo dnf install clang
  • (可选)要支持各种开发语言,例如go, node.js ,则先安装对应工具
sudo dnf install golang
sudo dnf install nodejs
sudo dnf install ruby

详细请参考Fedora环境下Go快速起步Fedora环境下Node.js快速起步

  • 编译安装所有检测到的语言(我没有使用这个方法)
cd ~/.vim/bundle/YouCompleteMe
./install.py --all

注意:这个命令会下载CLang(如果没有找到libclang

如果只需要支持C语言(我没有使用这个方法):

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

多语言支持(使用这个方法,但是调整成使用系统libclang,见下文)

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

这里遇到一个报错

Downloading Clang 5.0.0
CMake Error at ycm/CMakeLists.txt:102 (file):
  file DOWNLOAD HASH mismatch

    for file: [/home/huatai/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp/../clang_archives/clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz]
      expected hash: [58c1171f326108cfb7641441c5ede7846d58823bce3206c86a84c7ef7748860d]
        actual hash: [e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855]
             status: [22;"HTTP response code said error"]



xz: (stdin): File format not recognized
tar: Child returned status 1
tar: Error is not recoverable: exiting now
CMake Error at ycm/CMakeLists.txt:135 (message):                                                                                   
  Cannot find path to libclang in prebuilt binaries

比较奇怪,我的系统是Fedora,却下载了ubuntu版本?后来发现实际上是官方网站CDN存在问题,导致下载文件大小为0.

不过,我不理解为何会下载ubuntu版本,install.py可传递参数中没有包含指定下载目录方法,单独指定安装目录可以参考vim进阶 | 使用插件打造实用vim工作环境手工从LLVM官方下载二进制程序,或者Boost your Vim autocompletion with YouCompleteMe and Jedi (on a CentOS system)

mkdir ~/tools
cd ~/tools
wget http://releases.llvm.org/5.0.1/clang+llvm-5.0.1-x86_64-linux-gnu-Fedora27.tar.xz

tar xf clang+llvm-5.0.1-x86_64-linux-gnu-Fedora27.tar.xz


mkdir ~/.vim/bundle/YouCompleteMe/ycm_build
cd ~/.vim/bundle/YouCompleteMe/ycm_build
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:~/tools/clang+llvm-5.0.1-x86_64-linux-gnu-Fedora27/lib
cmake28 -G "Unix Makefiles" \
        -DPATH_TO_LLVM_ROOT=~/tools/clang+llvm-5.0.1-x86_64-linux-gnu-Fedora27/ . ~/.vim/bundle/YouCompleteMe/cpp
make

当所有编译完成后,执行

cp ~/tools/clang+llvm-5.0.1-x86_64-linux-gnu-Fedora27/lib/libLLVM-*.so ~/.vim/bundle/YouCompleteMe/python

不过,我为了简化安装,采用了系统自带的libclang库,所以实际采用的安装方法是:

cd ~/.vim/bundle/YouCompleteMe
./install.py --system-libclang --clang-completer --go-completer --js-completer    

已验证,上述方法可行

编译安装后提示

[100%] Built target ycm_core
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN tern_runtime No repository field.
npm WARN tern_runtime No license field.

added 28 packages in 5.704s

参考