31da5e34c1
Summary: Based on https://github.com/facebook/rocksdb/issues/6648 (CLA Signed), but heavily modified / extended: * Implicit capture of this via [=] deprecated in C++20, and [=,this] not standard before C++20 -> now using explicit capture lists * Implicit copy operator deprecated in gcc 9 -> add explicit '= default' definition * std::random_shuffle deprecated in C++17 and removed in C++20 -> migrated to a replacement in RocksDB random.h API * Add the ability to build with different std version though -DCMAKE_CXX_STANDARD=11/14/17/20 on the cmake command line * Minimal rebuild flag of MSVC is deprecated and is forbidden with /std:c++latest (C++20) * Added MSVC 2019 C++11 & MSVC 2019 C++20 in AppVeyor * Added GCC 9 C++11 & GCC9 C++20 in Travis Pull Request resolved: https://github.com/facebook/rocksdb/pull/6697 Test Plan: make check and CI Reviewed By: cheng-chang Differential Revision: D21020318 Pulled By: pdillinger fbshipit-source-id: 12311be5dbd8675a0e2c817f7ec50fa11c18ab91
8 lines
277 B
CMake
8 lines
277 B
CMake
macro(get_cxx_std_flags FLAGS_VARIABLE)
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if( CMAKE_CXX_STANDARD_REQUIRED )
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set(${FLAGS_VARIABLE} ${CMAKE_CXX${CMAKE_CXX_STANDARD}_STANDARD_COMPILE_OPTION})
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else()
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set(${FLAGS_VARIABLE} ${CMAKE_CXX${CMAKE_CXX_STANDARD}_EXTENSION_COMPILE_OPTION})
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endif()
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endmacro()
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