In recent Xcode versions, Apple has standardized on libc++ as the default and sole supported C++ standard library for macOS and iOS. https://developer.apple.com/documentation/xcode/build-settings-reference#Enable-C++-Standard-Library-Hardening

@RGVincent In recent Xcode versions, Apple has standardized on libc++ as the default and sole supported C++ standard library for macOS and iOS. https://developer.apple.com/documentation/xcode/build-settings-reference#Enable-C++-Standard-Library-Hardening