g++ include directory in the headerfile

Question

The path to my .cpp and .h files: /home/quasiturbine/ServerProject/Network/NetworkIncludes/

There you can find TCP_Connexion.h and TCP_Connexion.cpp

In the .cpp file, I got #include "NetworkIncludes\TCP_Connexion.h" and default constructor/destructor. That's it.

G++ command:

g++ -o program -I/home/quasiturbine/ServerProject/Network/ /home/quasiturbine/ServerProject/Network/NetworkIncludes/TCP_Connexion.cpp

fatal error: /home/quasiturbine/ServerProject/Network/NetworkIncludes/TCP_Connexion.cpp:1:43: fatal error: NetworkIncludes\TCP_Connexion.h: No such file or folder #include "NetworkIncludes\TCP_Connexion.h"

What is wrong and how can I fix it?

I think you want to add you Project Folder as include Directory. With gcc/g++ you Need to add the following flag: -I/home/quasiturbine/ServerProject/Network/ — Thomas Sparber
– Thomas Sparber, Commented Nov 20, 2017 at 9:42
try to use #include <NetworkIncludes\TCP_Connexion.h> instead of #include "NetworkIncludes\TCP_Connexion.h" — Thomas Sparber
– Thomas Sparber, Commented Nov 20, 2017 at 9:45
I dont know if I was clear...after program, it's in Include, not a link — Gabriel Proulx
– Gabriel Proulx, Commented Nov 20, 2017 at 9:45

nyronium · Accepted Answer · 2017-11-20 10:10:58Z

The problem is, that you are using backslashes \ when you should be using forward slashes /. Backslashes in include paths are undefined behavior before C++11 and implementation defined afterwards (reference).

So change your include to

#include "NetworkIncludes/TCP_Connexion.h"

and you should be good to go.

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