Recall that g++ is not actually the C++ compiler – it is a driver program that hides a lot of the complexity of the compilation process from us. What is actually going on here is:

• The C++ preprocessor is called to handle things like #include.
• Preprocessed text is passed to the actual C++ compiler, which produces compiled assembly language code.
• The assembly language code is assembled by the GCC assembler, producing an object code file.
• The object code file is linked with the C++ libraries by the linker to produce the final executable.
• The intermediate files are disposed of.

• 調用 C++ 預處理器來處理 #include 等問題。
• 預處理的文本傳遞給實際的 C++ 編譯器, 它生成編譯的匯編語言代碼。
• 匯編語言代碼由 GCC 匯編程序組裝, 生成一個對象代碼文件。
• 鏈接器將對象代碼文件與 C++ 庫鏈接, 以生成最終可執行文件。
• 中間文件被釋放。

C++ 的編譯過程