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-rw-r--r--build/set_clang_warning_flags.gypi58
-rw-r--r--build/standalone.gypi4
2 files changed, 62 insertions, 0 deletions
diff --git a/build/set_clang_warning_flags.gypi b/build/set_clang_warning_flags.gypi
new file mode 100644
index 0000000000..f6d7aea700
--- /dev/null
+++ b/build/set_clang_warning_flags.gypi
@@ -0,0 +1,58 @@
+# Copyright (c) 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# This file is meant to be included to set clang-specific compiler flags.
+# To use this the following variable can be defined:
+# clang_warning_flags: list: Compiler flags to pass to clang.
+# clang_warning_flags_unset: list: Compiler flags to not pass to clang.
+#
+# Only use this in third-party code. In chromium_code, fix your code to not
+# warn instead!
+#
+# Note that the gypi file is included in target_defaults, so it does not need
+# to be explicitly included.
+#
+# Warning flags set by this will be used on all platforms. If you want to set
+# warning flags on only some platforms, you have to do so manually.
+#
+# To use this, create a gyp target with the following form:
+# {
+# 'target_name': 'my_target',
+# 'variables': {
+# 'clang_warning_flags': ['-Wno-awesome-warning'],
+# 'clang_warning_flags_unset': ['-Wpreviously-set-flag'],
+# }
+# }
+
+{
+ 'variables': {
+ 'clang_warning_flags_unset%': [], # Provide a default value.
+ },
+ 'conditions': [
+ ['clang==1', {
+ # This uses >@ instead of @< to also see clang_warning_flags set in
+ # targets directly, not just the clang_warning_flags in target_defaults.
+ 'cflags': [ '>@(clang_warning_flags)' ],
+ 'cflags!': [ '>@(clang_warning_flags_unset)' ],
+ 'xcode_settings': {
+ 'WARNING_CFLAGS': ['>@(clang_warning_flags)'],
+ 'WARNING_CFLAGS!': ['>@(clang_warning_flags_unset)'],
+ },
+ 'msvs_settings': {
+ 'VCCLCompilerTool': {
+ 'AdditionalOptions': [ '>@(clang_warning_flags)' ],
+ 'AdditionalOptions!': [ '>@(clang_warning_flags_unset)' ],
+ },
+ },
+ }],
+ ['clang==0 and host_clang==1', {
+ 'target_conditions': [
+ ['_toolset=="host"', {
+ 'cflags': [ '>@(clang_warning_flags)' ],
+ 'cflags!': [ '>@(clang_warning_flags_unset)' ],
+ }],
+ ],
+ }],
+ ],
+}
diff --git a/build/standalone.gypi b/build/standalone.gypi
index 402c726372..a0bf87e0f8 100644
--- a/build/standalone.gypi
+++ b/build/standalone.gypi
@@ -260,6 +260,10 @@
'-Wno-unused-parameter',
],
},
+ 'variables': {
+ 'clang_warning_flags': [],
+ },
+ 'includes': [ 'set_clang_warning_flags.gypi', ],
'conditions': [
['component=="shared_library"', {
'cflags': [