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1# This file is NOT licensed under the GPLv3, which is the license for the rest
2# of YouCompleteMe.
3#
4# Here's the license text for this file:
5#
6# This is free and unencumbered software released into the public domain.
7#
8# Anyone is free to copy, modify, publish, use, compile, sell, or
9# distribute this software, either in source code form or as a compiled
10# binary, for any purpose, commercial or non-commercial, and by any
11# means.
12#
13# In jurisdictions that recognize copyright laws, the author or authors
14# of this software dedicate any and all copyright interest in the
15# software to the public domain. We make this dedication for the benefit
16# of the public at large and to the detriment of our heirs and
17# successors. We intend this dedication to be an overt act of
18# relinquishment in perpetuity of all present and future rights to this
19# software under copyright law.
20#
21# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
24# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
25# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
26# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
27# OTHER DEALINGS IN THE SOFTWARE.
28#
29# For more information, please refer to <http://unlicense.org/>
30
31import os
32import ycm_core
33
34# These are the compilation flags that will be used in case there's no
35# compilation database set (by default, one is not set).
36# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
37flags = [
38'-Wall',
39'-Wextra',
40'-Werror',
41'-Wno-long-long',
42'-Wno-variadic-macros',
43'-fexceptions',
44'-DNDEBUG',
45# You 100% do NOT need -DUSE_CLANG_COMPLETER in your flags; only the YCM
46# source code needs it.
47'-DUSE_CLANG_COMPLETER',
48# THIS IS IMPORTANT! Without a "-std=<something>" flag, clang won't know which
49# language to use when compiling headers. So it will guess. Badly. So C++
50# headers will be compiled as C headers. You don't want that so ALWAYS specify
51# a "-std=<something>".
52# For a C project, you would set this to something like 'c99' instead of
53# 'c++11'.
54'-std=c99',
55# ...and the same thing goes for the magic -x option which specifies the
56# language that the files to be compiled are written in. This is mostly
57# relevant for c++ headers.
58# For a C project, you would set this to 'c' instead of 'c++'.
59'-x',
60'c',
61'-isystem',
62'../BoostParts',
63'-isystem',
64# This path will only work on OS X, but extra paths that don't exist are not
65# harmful
66'/System/Library/Frameworks/Python.framework/Headers',
67'-isystem',
68'../llvm/include',
69'-isystem',
70'../llvm/tools/clang/include',
71'-I',
72'.',
73'-I',
74'./ClangCompleter',
75'-isystem',
76'./tests/gmock/gtest',
77'-isystem',
78'./tests/gmock/gtest/include',
79'-isystem',
80'./tests/gmock',
81'-isystem',
82'./tests/gmock/include',
83]
84
85
86# Set this to the absolute path to the folder (NOT the file!) containing the
87# compile_commands.json file to use that instead of 'flags'. See here for
88# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
89#
90# You can get CMake to generate this file for you by adding:
91# set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
92# to your CMakeLists.txt file.
93#
94# Most projects will NOT need to set this to anything; you can just change the
95# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
96compilation_database_folder = ''
97
98if os.path.exists( compilation_database_folder ):
99 database = ycm_core.CompilationDatabase( compilation_database_folder )
100else:
101 database = None
102
103SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]
104
105def DirectoryOfThisScript():
106 return os.path.dirname( os.path.abspath( __file__ ) )
107
108
109def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
110 if not working_directory:
111 return list( flags )
112 new_flags = []
113 make_next_absolute = False
114 path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
115 for flag in flags:
116 new_flag = flag
117
118 if make_next_absolute:
119 make_next_absolute = False
120 if not flag.startswith( '/' ):
121 new_flag = os.path.join( working_directory, flag )
122
123 for path_flag in path_flags:
124 if flag == path_flag:
125 make_next_absolute = True
126 break
127
128 if flag.startswith( path_flag ):
129 path = flag[ len( path_flag ): ]
130 new_flag = path_flag + os.path.join( working_directory, path )
131 break
132
133 if new_flag:
134 new_flags.append( new_flag )
135 return new_flags
136
137
138def IsHeaderFile( filename ):
139 extension = os.path.splitext( filename )[ 1 ]
140 return extension in [ '.h', '.hxx', '.hpp', '.hh' ]
141
142
143def GetCompilationInfoForFile( filename ):
144 # The compilation_commands.json file generated by CMake does not have entries
145 # for header files. So we do our best by asking the db for flags for a
146 # corresponding source file, if any. If one exists, the flags for that file
147 # should be good enough.
148 if IsHeaderFile( filename ):
149 basename = os.path.splitext( filename )[ 0 ]
150 for extension in SOURCE_EXTENSIONS:
151 replacement_file = basename + extension
152 if os.path.exists( replacement_file ):
153 compilation_info = database.GetCompilationInfoForFile(
154 replacement_file )
155 if compilation_info.compiler_flags_:
156 return compilation_info
157 return None
158 return database.GetCompilationInfoForFile( filename )
159
160
161def FlagsForFile( filename, **kwargs ):
162 if database:
163 # Bear in mind that compilation_info.compiler_flags_ does NOT return a
164 # python list, but a "list-like" StringVec object
165 compilation_info = GetCompilationInfoForFile( filename )
166 if not compilation_info:
167 return None
168
169 final_flags = MakeRelativePathsInFlagsAbsolute(
170 compilation_info.compiler_flags_,
171 compilation_info.compiler_working_dir_ )
172
173 # NOTE: This is just for YouCompleteMe; it's highly likely that your project
174 # does NOT need to remove the stdlib flag. DO NOT USE THIS IN YOUR
175 # ycm_extra_conf IF YOU'RE NOT 100% SURE YOU NEED IT.
176 try:
177 final_flags.remove( '-stdlib=libc++' )
178 except ValueError:
179 pass
180 else:
181 relative_to = DirectoryOfThisScript()
182 final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
183
184 return { 'flags': final_flags }