c - 如何在 include 语句中包含

Question

我想在我的程序中包含一个文件 say a.h，它位于某个位置，例如 (/ws/uname/bd/lib) & 该文件又具有不同的 include 语句，其文件位于截然不同的位置。我如何通过仅包含带有“/ws/uname/bd/lib/a.h”的文件来做到这一点。我不想更改任何头文件。

感谢您的帮助

Answer 1

你用的是什么编译器？如果是clang或者gcc，可以使用-I标志来添加头文件的搜索路径。来自gcc(1) man page :

-Idir

Add the directory dir to the head of the list of directories to be searched for header files. This can be used to override a system header file, substituting your own version, since these directories are searched before the system header file directories. However, you should not use this option to add directories that contain vendor-supplied system header files (use -isystem for that). If you use more than one -I option, the directories are scanned in left-to-right order; the standard system directories come after.