6dfa204082
The [[nodiscard]] attribute has been added to C++17. It can thus be used inside libcamera, but would prevent applications compiled for C++14 to use libcamera if the attribute was used in public headers. To offer this feature when the application is compiled with a recent-enough C++ version, as well as for compiling libcamera itself, add a __nodiscard macro that expands as [[nodiscard]] when using C++17 or newer. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
17 lines
328 B
C++
17 lines
328 B
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2021, Google Inc.
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*
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* compiler.h - Compiler support
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*/
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#ifndef __LIBCAMERA_COMPILER_H__
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#define __LIBCAMERA_COMPILER_H__
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#if __cplusplus >= 201703L
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#define __nodiscard [[nodiscard]]
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#else
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#define __nodiscard
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#endif
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#endif /* __LIBCAMERA_COMPILER_H__ */
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