1# Copyright 2016 the V8 project authors. All rights reserved.
2# Copyright (c) 2014 The Chromium Authors. All rights reserved.
3# Use of this source code is governed by a BSD-style license that can be
4# found in the LICENSE file.
5
6# This file is meant to be included to set clang-specific compiler flags.
7# To use this the following variable can be defined:
8#   clang_warning_flags:       list: Compiler flags to pass to clang.
9#   clang_warning_flags_unset: list: Compiler flags to not pass to clang.
10#
11# Only use this in third-party code. In chromium_code, fix your code to not
12# warn instead!
13#
14# Note that the gypi file is included in target_defaults, so it does not need
15# to be explicitly included.
16#
17# Warning flags set by this will be used on all platforms. If you want to set
18# warning flags on only some platforms, you have to do so manually.
19#
20# To use this, create a gyp target with the following form:
21# {
22#   'target_name': 'my_target',
23#   'variables': {
24#     'clang_warning_flags': ['-Wno-awesome-warning'],
25#     'clang_warning_flags_unset': ['-Wpreviously-set-flag'],
26#   }
27# }
28
29{
30  'variables': {
31    'clang_warning_flags_unset%': [],  # Provide a default value.
32  },
33  'conditions': [
34    ['clang==1', {
35      # This uses >@ instead of @< to also see clang_warning_flags set in
36      # targets directly, not just the clang_warning_flags in target_defaults.
37      'cflags': [ '>@(clang_warning_flags)' ],
38      'cflags!': [ '>@(clang_warning_flags_unset)' ],
39      'xcode_settings': {
40        'WARNING_CFLAGS': ['>@(clang_warning_flags)'],
41        'WARNING_CFLAGS!': ['>@(clang_warning_flags_unset)'],
42      },
43      'msvs_settings': {
44        'VCCLCompilerTool': {
45          'AdditionalOptions': [ '>@(clang_warning_flags)' ],
46          'AdditionalOptions!': [ '>@(clang_warning_flags_unset)' ],
47        },
48      },
49    }],
50    ['clang==0 and host_clang==1', {
51      'target_conditions': [
52        ['_toolset=="host"', {
53          'cflags': [ '>@(clang_warning_flags)' ],
54          'cflags!': [ '>@(clang_warning_flags_unset)' ],
55        }],
56      ],
57    }],
58  ],
59}
60