Undefined reference when using "Hello world" of Irrlicht library

Question

I'm trying to compile the very first code given by Irrlicht library website.

As said in the title, I get an undefined reference. I'm using 8.2 netbeans IDE.

This is what I've done so far : Installed Irrlicht library from the Linux repository (I'm using Ubuntu 18.04). Using these command lines : sudo apt-get install libirrlicht1.8 libirrlicht1.8-dbg libirrlicht-dev libirrlicht-doc

In the "project properties", I've added the include directory, as well as the include headers (e.g all the files contained in /usr/include/irrlicht. Also, in the "Additional Options" (the linker part, I guess ?) , I've seen online that I should add -lIrrlicht command line, and it still got me the undefined reference.

I've tried also the following command line : -L /usr/include/irrlicht -lIrrlicht, still got me the undefined reference.

I know that the compiler finds the library, as it does not make a compilation error saying that it doesn't know "irrlicht.h", so the problem is coming from the linker. What command line does the linker expects ?

Note : I'm not able to make any update. Talking about irrlicht, it seems that I have 363 packages outdated. Could the problem be from there ?

Edit : Here is the minimum code, as requested. There is no point showing it, as the error comes from the linker command line :

#include <cstdlib>
#include <iostream>
#include <irrlicht.h>

using namespace std;
using namespace irr;
using namespace core;

int main(int argc, char** argv) {

    IrrlichtDevice *device=createDevice(video::EDT_SOFTWARE,dimension2d<u32>(640,480),16,false,false,false,0);
return 0;
}

Answer 1

I had a similar problem with another library. I fixed it by changing the path in the linker?

according to https://de.wikibooks.org/wiki/Irrlicht_-_from_Noob_to_Pro:_C%2B%2B_f%C3%BCr_Irrlicht_einrichten

you have to link lIrrlicht like:

LIBS += -L/.../Irrlicht/irrlicht-1.7.1/lib/Linux
LIBS += -lIrrlicht 

instead of -L /usr/include/irrlicht -lIrrlicht (for unix).

Did you try that?