vim插件YouCompleteMe安装 |

安装

sudo apt-get install build-essential cmake
sudo apt-get install python-dev python3-dev

在 .vimrc 中：

Bundle 'Valloric/YouCompleteMe'

下载完成之后需要编译，支持语义分析：

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

编译完成后，完成安装，接下来需要配置

配置

在vim启动后,YCM会找寻当前路径以及上层路径的 .ycm_extra_conf.py .

在~/.vim/bundle/YouCompleteMe/cpp/ycm/.ycm_extra_conf.py 中提供了默认的模板.

可以使用 newycm_extra_conf.py 来生成模板

使用-isystem添加系统的头文件进行解析，使用-I添加第三方的头文件进行解析，在flags部分后添加如下内容：

'-isystem',
'/usr/include',

修改之后用于C工程配置文件如下：

# This file is NOT licensed under the GPLv3, which is the license for the rest
# of YouCompleteMe.
#
# Here's the license text for this file:
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# For more information, please refer to <http://unlicense.org/>

import os
import ycm_core

# These are the compilation flags that will be used in case there's no
# compilation database set (by default, one is not set).
# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
flags = [
'-Wall'
, '-Wextra'
#'-Werror', # Fucking unused parameter 'argc'
, '-Wno-long-long'
, '-Wno-variadic-macros'
, '-Wno-unused-parameter'
, '-Wno-missing-field-initializers'
, '-fexceptions'
, '-DNDEBUG'
, '-DUSE_CLANG_COMPLETER'
, '-Wno-int-to-pointer-cast'
, '-Wno-pointer-to-int-cast'
, '-Wno-sign-compare'
# THIS IS IMPORTANT! Without a "-std=<something>" flag, clang won't know which
# language to use when compiling headers. So it will guess. Badly. So C++
# headers will be compiled as C headers. You don't want that so ALWAYS specify
# a "-std=<something>".
# For a C project, you would set this to something like 'c99' instead of
# 'c++11'.
, '-std=c99'
# ...and the same thing goes for the magic -x option which specifies the
# language that the files to be compiled are written in. This is mostly
# relevant for c++ headers.
# For a C project, you would set this to 'c' instead of 'c++'.
, 'c'
, '-isystem'
, '../BoostParts'
, '-isystem'
# This path will only work on OS X, but extra paths that don't exist are not
# harmful
, '/System/Library/Frameworks/Python.framework/Headers'
, '-isystem'
, '../llvm/include'
, '-isystem'
, '../llvm/tools/clang/include'
, '-I'
, '.'
, '-I'
, './ClangCompleter'
, '-isystem'
, './tests/gmock/gtest'
, '-isystem'
, './tests/gmock/gtest/include'
, '-isystem'
, './tests/gmock'
, '-isystem'
, './tests/gmock/include'
, '-I'
, '/usr/include'
, '-I'
, '/usr/local/include'
, '-I'
, './solution/app/include'
, '-I'
, './solution/bsp/include/'
, '-I'
, './solution/app/log/include'
, '-I'
, './driver/gxcoreapi/ecos3.0/packages/isoinfra/v3_0/include'
]

# Set this to the absolute path to the folder (NOT the file!) containing the
# compile_commands.json file to use that instead of 'flags'. See here for
# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
#
# Most projects will NOT need to set this to anything; you can just change the
# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
compilation_database_folder = ''

if compilation_database_folder:
  database = ycm_core.CompilationDatabase( compilation_database_folder )
else:
  database = None


def DirectoryOfThisScript():
  return os.path.dirname( os.path.abspath( __file__ ) )


def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
  if not working_directory:
    return list( flags )
  new_flags = []
  make_next_absolute = False
  path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
  for flag in flags:
    new_flag = flag

    if make_next_absolute:
      make_next_absolute = False
      if not flag.startswith( '/' ):
        new_flag = os.path.join( working_directory, flag )

    for path_flag in path_flags:
      if flag == path_flag:
        make_next_absolute = True
        break

      if flag.startswith( path_flag ):
        path = flag[ len( path_flag ): ]
        new_flag = path_flag + os.path.join( working_directory, path )
        break

    if new_flag:
      new_flags.append( new_flag )
  return new_flags


def FlagsForFile( filename ):
  if database:
    # Bear in mind that compilation_info.compiler_flags_ does NOT return a
    # python list, but a "list-like" StringVec object
    compilation_info = database.GetCompilationInfoForFile( filename )
    final_flags = MakeRelativePathsInFlagsAbsolute(
      compilation_info.compiler_flags_,
      compilation_info.compiler_working_dir_ )
  else:
    relative_to = DirectoryOfThisScript()
    final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )

  return {
    'flags': final_flags,
    'do_cache': True
  }