<>中包含的文件找不到“”中​​包含的文件

Question

I'm developing a library that is to be used (after compiled and installed) by another developer. All my includes are like this:

#include "../exception/CException.h"

All goes well but when I install the library and use it in another program with #include <> that include a file that have #include "../exception/CException.h" the last file is not found. Why?

Any help to improve include usage?

Answer 1

The problem with a relative path is that we don't know for sure what it is relative to. Different compilers have different ways of doing this.

You should rather use

#include "yourlib/exception/CException.h"

similar to Boost.

If you install this as a subdirectory yourlib in /usr/local the compiler should be able to find that.

Answer 2

You'll need to distribute ../exception/CException.h with your library. If it's really part of your library putting it in a subdirectory rather than a sibling would be preferable.