Environment MacOS Mojave 10.14.4 Qt 5.12.3 clang++ $ clang++ --version Apple LLVM version 10.0.1 (clang-1001.0.46.4) Target: x86_64-apple-darwin18.5.0 Thread model: posix InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/…