meson setup .openbench --cross-file targets/linux-native.txt --buildtype=release
The Meson build system
Version: 1.7.2
Source dir: /tmp/tmpqdwmqnep/Meltdown/Meltdown-tmp
Build dir: /tmp/tmpqdwmqnep/Meltdown/Meltdown-tmp/.openbench
Build type: cross build
Project name: meltdown-chess-engine
Project version: dev-1.0

meson.build:1:0: ERROR: None of values ['c++26'] are supported by the C++ compiler. Possible values for option "C++_std" are ['none', 'c++98', 'c++03', 'c++11', 'c++14', 'c++17', 'c++1z', 'c++2a', 'c++20', 'c++23', 'gnu++98', 'gnu++03', 'gnu++11', 'gnu++14', 'gnu++17', 'gnu++1z', 'gnu++2a', 'gnu++20', 'gnu++23']

A full log can be found at /tmp/tmpqdwmqnep/Meltdown/Meltdown-tmp/.openbench/meson-logs/meson-log.txt
make: *** [Makefile:7: openbench] Error 1