fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

Peter Dillinger 31da5e34c1 C++20 compatibility (#6697 An error occurred ) ... 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		5 years ago
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modules	C++20 compatibility (#6697 An error occurred )	5 years ago
RocksDBConfig.cmake.in	CMake: Add support for CMake packages	8 years ago