contributed by < ioksengtan > 實驗環境 $ gcc --version Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1 Apple clang version 12.0.5 (clang-1205.0.22.11) Target: arm64-apple-darwin20.5.0 Thread model: posix 作業要求