I've been trying unsuccessfully to get C++23 support in Code Blocks. I'm on Pop!_OS 22.04 LTS. The Code Blocks release from the Pop Shop is 20.03. I have gcc-12 on my system and CB is pointing at those Toolchain executables. The most recent standard option is C++17 though and adding "-std=c++23" to the compiler options field doesn't actually change the standard used. My next thought was to update Code Blocks manually to the new 25.03 release but the website only has a version for Debian. Will that work on Pop!_OS? Or is there some other secret voodoo I haven't found yet to get C++23 support?