Leveldb, cmake und c++20 („memory_order_relaxed“ ist kein Mitglied von „std::memory_order“) ⇐ C++

[Anonymous]

Nachdem cmake aktualisiert wurde, um c++20 mit set(CMAKE_CXX_STANDARD 20) zu verwenden, werden beim Kompilieren der Abhängigkeitsebenendatenbank die folgenden Fehler angezeigt

Code: Select all

[ 11%] Built target glfw
[ 15%] Built target raylib
[ 16%] Built target fmt
[ 16%] Building CXX object _deps/leveldb-build/CMakeFiles/leveldb.dir/util/env_posix.cc.o
/home/natan/Projects/raylib-tutorial-2/03-classy_clash/build/_deps/leveldb-src/util/env_posix.cc: In constructor ‘leveldb::{anonymous}::SingletonEnv::SingletonEnv()’:
/home/natan/Projects/raylib-tutorial-2/03-classy_clash/build/_deps/leveldb-src/util/env_posix.cc:840:53: error: ‘memory_order_relaxed’ is not a member of ‘std::memory_order’
840 |     env_initialized_.store(true, std::memory_order::memory_order_relaxed);
|                                                     ^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/13/cassert:44,
from /home/natan/Projects/raylib-tutorial-2/03-classy_clash/build/_deps/leveldb-src/./util/posix_logger.h:13,
from /home/natan/Projects/raylib-tutorial-2/03-classy_clash/build/_deps/leveldb-src/util/env_posix.cc:36:
/home/natan/Projects/raylib-tutorial-2/03-classy_clash/build/_deps/leveldb-src/util/env_posix.cc: In static member function ‘static void leveldb::{anonymous}::SingletonEnv::AssertEnvNotInitialized()’:
/home/natan/Projects/raylib-tutorial-2/03-classy_clash/build/_deps/leveldb-src/util/env_posix.cc:857:54: error: ‘memory_order_relaxed’ is not a member of ‘std::memory_order’
857 |     assert(!env_initialized_.load(std::memory_order::memory_order_relaxed));
|                                                      ^~~~~~~~~~~~~~~~~~~~
gmake[2]: *** [_deps/leveldb-build/CMakeFiles/leveldb.dir/build.make:580: _deps/leveldb-build/CMakeFiles/leveldb.dir/util/env_posix.cc.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:425: _deps/leveldb-build/CMakeFiles/leveldb.dir/all] Error 2
gmake: *** [Makefile:156: all] Error 2

C++17 funktioniert gut. Was kann ich tun, um den Build-Fehler mit C++20 zu beheben? Sollte ich leveldb forken, nur um das Problem zu beheben?