Library include paths with same header name

Question

What is the best method to include a file that has same name in another folder from additional include directories?

Example:

lib1/include/foo.h
lib2/         


        

Answer 1

#include "lib1/include/foo.h"
#include "lib2/include/foo.h"

Is fine as long as this is the actual relative path to those headers and the include guards are different. For example, if both foo.h use

#ifndef _foo_h_

then this will give you something you dont want (it will only include one, not both and which one depends on the order of execution).