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September 18, 2015 07:10
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| # echo | clang -std=c++11 -stdlib=libc++ -v -E -x c++ - | |
| import os | |
| import ycm_core | |
| # These are the compilation flags that will be used in case there's no | |
| # compilation database set. | |
| flags = [ | |
| '-Wall', | |
| '-std=c++11', | |
| '-stdlib=libc++', | |
| '-x', | |
| 'c++', | |
| '-I', | |
| '.', | |
| '-I', | |
| './include', | |
| '-I', | |
| '../include', | |
| '-isystem', | |
| '/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1', | |
| # '-isystem', | |
| # '/Library/Frameworks', | |
| '-isystem', | |
| '/usr/local/include', | |
| '-isystem', | |
| '/Library/Developer/CommandLineTools/usr/bin/../lib/clang/7.0.0/include', | |
| # '-isystem', | |
| # '/Library/Developer/CommandLineTools/usr/include', | |
| # '-isystem', | |
| # '/System/Library/Frameworks', | |
| '-isystem', | |
| '/usr/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 | |
| # | |
| # 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 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 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 | |
| } |
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