c2e6b86786
We could change WX_IS_MACOS_AVAILABLE itself to be a variadic macro, but this would be significantly more complex and doesn't seem warranted.
41 lines
1.7 KiB
C
41 lines
1.7 KiB
C
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/osx/private/available.h
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// Purpose: Helper for checking API availability under macOS.
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// Author: Vadim Zeitlin
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// Created: 2019-04-17
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// Copyright: (c) 2019 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_OSX_PRIVATE_AVAILABLE_H_
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#define _WX_OSX_PRIVATE_AVAILABLE_H_
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// Xcode 9 adds new @available keyword and the corresponding __builtin_available
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// builtin which should be used instead of manual checks for API availability
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// as using this builtin suppresses the compiler -Wunguarded-availability
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// warnings, so use it if possible for the implementation of our own macro.
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#if defined(__clang__) && __has_builtin(__builtin_available)
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#define WX_IS_MACOS_AVAILABLE(major, minor) \
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__builtin_available(macOS major ## . ## minor, *)
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#define WX_IS_MACOS_AVAILABLE_FULL(major, minor, micro) \
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__builtin_available(macOS major ## . ## minor ## . ## micro, *)
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// Note that we can't easily forward to API_AVAILABLE macro here, so go
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// directly to its expansion instead.
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#define WX_API_AVAILABLE_MACOS(major, minor) \
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__attribute__((availability(macos,introduced=major ## . ## minor)))
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#else // Not clang or old clang version without __builtin_available
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#include "wx/platinfo.h"
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#define WX_IS_MACOS_AVAILABLE(major, minor) \
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wxPlatformInfo::Get().CheckOSVersion(major, minor)
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#define WX_IS_MACOS_AVAILABLE_FULL(major, minor, micro) \
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wxPlatformInfo::Get().CheckOSVersion(major, minor, micro)
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#define WX_API_AVAILABLE_MACOS(major, minor)
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#endif
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#endif // _WX_OSX_PRIVATE_AVAILABLE_H_
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