34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
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/*
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* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_IGNORE_WUNDEF_H_
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#define RTC_BASE_IGNORE_WUNDEF_H_
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// If a header file uses #if on possibly undefined macros (and it's for some
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// reason not possible to just fix the header file), include it like this:
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//
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// RTC_PUSH_IGNORING_WUNDEF()
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// #include "misbehaving_header.h"
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// RTC_POP_IGNORING_WUNDEF()
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//
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// This will cause the compiler to not emit -Wundef warnings for that file.
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#ifdef __clang__
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#define RTC_PUSH_IGNORING_WUNDEF() \
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_Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wundef\"")
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#define RTC_POP_IGNORING_WUNDEF() _Pragma("clang diagnostic pop")
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#else
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#define RTC_PUSH_IGNORING_WUNDEF()
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#define RTC_POP_IGNORING_WUNDEF()
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#endif // __clang__
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#endif // RTC_BASE_IGNORE_WUNDEF_H_
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