easylogging++ how avoid multiple init

Question

my dll has 2 entry points and I wish use EasyLogging++ with both entries..

I tried to use this header:

#pragma once
#ifndef EASYLOGGING_LOADER_H
#define EASYLOGGING_LOADER_H

#include "easylogging++.h"

INITIALIZE_EASYLOGGINGPP

#endif

but with this file included, I get the errors like this:

Error   LNK2005 "class std::shared_ptr<class el::base::Storage> el::base::elStorage" (?elStorage@base@el@@3V?$shared_ptr@VStorage@base@el@@@std@@A) already defined in gInput.obj

any ideas on solve this? thanks

ps. i'm using the Easylogging++ v9.96.4

Answer 1

It seems that the macro INITIALIZE_EASYLOGGINGPP defines a variable. If you include the header file in multiple translation units then you break the one definition rule and will get an error.

The simple solution is to invoke the macro only once in your whole project, by doing it in a single source file.