Question

I have a project, and I added all the source files to it. I then clicked build, and it said:

fatal error C1083: Cannot open include file: 'common.h': No such file or directory
1> crc64_tablegen.c

This is rather annoying, because common.h is in my project! It’s right there! I think it might be in a different directory though. Is the the reason? Should I move everything to a root directory, then add that instead? Thanx!

Answer 1

Where files are in the project structure makes no difference to the compiler when it is attempting to open include files. If they are in a different directory, you will need to path them appropriately.

That is, if you have this directory structure:

project/include/common.h
project/src/main.cpp

And you have this in your project:

Project
|-> common.h
|-> main.cpp

Your main file will need to do this:

#include "../include/common.h"

And not this:

#include "common.h"

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You may, alternatively, define project/include as an Additional Include Directory in your project settings. This will allow you do use the second include form shown above.