ycm_extra_conf.py for objective-c setting of YouCompleteMe

gistfile1.txt

import os
import ycm_core

flags = [
'-D__IPHONE_OS_VERSION_MIN_REQUIRED=70000',
'-resource-dir',
'/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.0.0',
'-mios-simulator-version-min=7.0',
'-arch i386',
'-fblocks',
'-fobjc-runtime=ios-7.0.0',
'-fencode-extended-block-signature',
'-fobjc-arc',
'-fobjc-exceptions',
'-fexceptions',
'-x',
'objective-c',
'-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Frameworks',
'-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/Frameworks',
'-I/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/Frameworks/Foundation.framework/Headers',
'-I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include',
'-I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.0.0/include',
'-I/Library/Developer/CommandLineTools/usr/include',
'-ISUB./Example/Pods/Headers/Public',
#custom definition, include subfolders
'-ISUB./Pods/Headers/Public',
'-I./Pod/Classes',
'-isysroot',
'/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk',
'-MMD',
]

SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]

# 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
#
# You can get CMake to generate this file for you by adding:
#   set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
# to your CMakeLists.txt file.
#
# 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 os.path.exists( compilation_database_folder ):
  database = ycm_core.CompilationDatabase( compilation_database_folder )
else:
  database = None

SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]

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


def Subdirectories(directory):
  res = []
  for path, subdirs, files in os.walk(directory):
    for name in subdirs:
      item = os.path.join(path, name)
      res.append(item)
  return res

def IncludeFlagsOfSubdirectory( flags, working_directory ):
  if not working_directory:
    return list( flags )
  new_flags = []
  make_next_include_subdir = False
  path_flags = [ '-ISUB']
  for flag in flags:
    # include the directory of flag as well
    new_flag = [flag.replace('-ISUB', '-I')]

    if make_next_include_subdir:
      make_next_include_subdir = False
      for subdir in Subdirectories(os.path.join(working_directory, flag)):
        new_flag.append('-I')
        new_flag.append(subdir)

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

      if flag.startswith( path_flag ):
        path = flag[ len( path_flag ): ]
        for subdir in Subdirectories(os.path.join(working_directory, path)):
            new_flag.append('-I' + subdir)
        break

    new_flags =new_flags + new_flag
  return new_flags

def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
  if not working_directory:
    return list( flags )
  #add include subfolders as well
  flags = IncludeFlagsOfSubdirectory( flags, working_directory )
  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 IsHeaderFile( filename ):
  extension = os.path.splitext( filename )[ 1 ]
  return extension in [ '.h', '.hxx', '.hpp', '.hh' ]


def GetCompilationInfoForFile( filename ):
  # The compilation_commands.json file generated by CMake does not have entries
  # for header files. So we do our best by asking the db for flags for a
  # corresponding source file, if any. If one exists, the flags for that file
  # should be good enough.
  if IsHeaderFile( filename ):
    basename = os.path.splitext( filename )[ 0 ]
    for extension in SOURCE_EXTENSIONS:
      replacement_file = basename + extension
      if os.path.exists( replacement_file ):
        compilation_info = database.GetCompilationInfoForFile(
          replacement_file )
        if compilation_info.compiler_flags_:
          return compilation_info
    return None
  return database.GetCompilationInfoForFile( filename )


def FlagsForFile( filename, **kwargs ):
  if database:
    # Bear in mind that compilation_info.compiler_flags_ does NOT return a
    # python list, but a "list-like" StringVec object
    compilation_info = GetCompilationInfoForFile( filename )
    if not compilation_info:
      return None

    final_flags = MakeRelativePathsInFlagsAbsolute(
      compilation_info.compiler_flags_,
      compilation_info.compiler_working_dir_ )

    # NOTE: This is just for YouCompleteMe; it's highly likely that your project
    # does NOT need to remove the stdlib flag. DO NOT USE THIS IN YOUR
    # ycm_extra_conf IF YOU'RE NOT 100% SURE YOU NEED IT.
    # try:
      # final_flags.remove( '-stdlib=libc++' )
    # except ValueError:
      # pass
  else:
    relative_to = DirectoryOfThisScript()
    final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )

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

# if __name__ == '__main__':
    # # res = subdirectory( DirectoryOfThisScript())
  # flags = [
  # '-D__IPHONE_OS_VERSION_MIN_REQUIRED=70000',
  # '-x',
  # 'objective-c',
  # '-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Frameworks',
  # '-ISUB./Pods/Headers/Public',
  # '-MMD',
  # ]

  # print IncludeFlagsOfSubdirectory( flags, DirectoryOfThisScript() )

This git has been deprecated. I have added a dedicated project for it
https://github.com/haifengkao/ycm_extra_config