Eclipse Community Forums: C / C++ IDE (CDT) » Undefined Reference To 'initgraph'

Home » Language IDEs » C / C++ IDE (CDT) » Undefined Reference To 'initgraph'(Graphics Program In C++ Not Getting Executed Via Eclipse)

Show: Today's Messages :: Show Polls :: Message Navigator

Undefined Reference To 'initgraph' [message #1806592]

Sat, 11 May 2019 07:42

Mukesh Lekhrajani

Messages: 12
Registered: May 2018

Junior Member

My Code -

#include <iostream>
#include <winbgim.h>
#include <cstdlib>
#include "graphics.h"

using namespace std;

int main()
{
int gdriver = 9;
int gmode = 2;
initgraph(&gdriver,&gmode, "");
setbkcolor(WHITE);
setcolor(BLACK);
cleardevice();
circle(320,240,180);
getch();
closegraph();
return 0;
}

The Error -

12:53:49 **** Incremental Build of configuration Debug for project My_CPP_World ****
Info: Internal Builder is used for build
g++ -O0 -g3 -Wall -c -fmessage-length=0 -o "src\\LoveGraphics.o" "..\\src\\LoveGraphics.cpp"
..\src\LoveGraphics.cpp: In function 'int main()':
..\src\LoveGraphics.cpp:19:33: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
initgraph(&gdriver,&gmode, "");
^
g++ -o My_CPP_World.exe "src\\LoveGraphics.o"
src\LoveGraphics.o: In function `main':
D:\Eclipse_Photon\Eclipse_CPP\eclipse\MyCCPPWorkSpace\My_CPP_World\Debug/../src/LoveGraphics.cpp:19: undefined reference to `initgraph'
D:\Eclipse_Photon\Eclipse_CPP\eclipse\MyCCPPWorkSpace\My_CPP_World\Debug/../src/LoveGraphics.cpp:20: undefined reference to `setbkcolor'
D:\Eclipse_Photon\Eclipse_CPP\eclipse\MyCCPPWorkSpace\My_CPP_World\Debug/../src/LoveGraphics.cpp:21: undefined reference to `setcolor'
D:\Eclipse_Photon\Eclipse_CPP\eclipse\MyCCPPWorkSpace\My_CPP_World\Debug/../src/LoveGraphics.cpp:22: undefined reference to `cleardevice'
D:\Eclipse_Photon\Eclipse_CPP\eclipse\MyCCPPWorkSpace\My_CPP_World\Debug/../src/LoveGraphics.cpp:23: undefined reference to `circle'
D:\Eclipse_Photon\Eclipse_CPP\eclipse\MyCCPPWorkSpace\My_CPP_World\Debug/../src/LoveGraphics.cpp:25: undefined reference to `closegraph'
collect2.exe: error: ld returned 1 exit status

12:53:51 Build Failed. 6 errors, 1 warnings. (took 1s.578ms)

Report message to a moderator

Re: Undefined Reference To 'initgraph' [message #1806604 is a reply to message #1806592]

Sat, 11 May 2019 13:11

Joost Kraaijeveld

Messages: 273
Registered: July 2009

Senior Member

And your question is?

Cheers,

Joost

Report message to a moderator

Re: Undefined Reference To 'initgraph' [message #1806613 is a reply to message #1806604]

Sat, 11 May 2019 22:47

David Vavra

Messages: 1426
Registered: October 2012

Senior Member

:) As Joost pointed out, you didn't ask anything.
But I'm guessing you meant to add "why am I getting these errors?"

Undefined reference to 'sym' is a link error saying you never defined the symbol 'sym'
Which means none of the object files you gave to the linker contain it.
In your case, they are likely in some library and you have to inform the linker which one it is.

You do this by adding -lxxx where the library name is libxxx.<some OS dependent lib extension>
And you add the path containing it to the library search list with -Lpath

To do this with a CDT Managed Build (where Eclipse/CDT creates the makefile),
Project --> Properties --> C/C++ Build --> Settings --> Tool Settings tab --> Linker --> Libraries
The top pane in the resulting dialog is for library names without the -l
And the bottom one is for adding a path to the library search list (without the -L)
Eclipse will add the -l and -L as appropriate.

Report message to a moderator

Previous Topic:	project builders order
Next Topic:	debugging issues in ARM9 processor

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Sep 19 15:11:11 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter