linker error when using dev C++ for GPIB

[dorna]

Can someone help me with this! I'm having a problem buiding my simple gpib (readin/writing to VNA) program in dev c++. So even this following simplest of programs gives me a linker error:

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>

/*
 *  Include the WINDOWS.H and DECL-32.H files. The standard Windows
 *  header file, WINDOWS.H, contains definitions used by DECL-32.H and
 *  DECL-32.H contains prototypes for the GPIB routines and constants.
 */
 
#include <windows.h>
#include "ni488.h"


int main() {
    int ud0;
    ud0=ibdev(0,16,0,13,1,0); //takes the addresses, 16 is the address of the device(VNA)
}




This is a C project, I have added gpib-32.obj to the project and also the ni488.h. I got both of these files form the languages\microsoft C directory in national instruments directory. I get this error:
  [Linker error] undefined reference to `ibdev@24'



What is going on! none of the sample programs work either. Is it because it's dev c++?

Thanks so much for helping!!

[muks]

When i digged the forum i got this

---

under the "Project" menu - "properties" - "linker" - "Command line", I added "...\GPIB.obj" to the additional options textbox.  This provides the missing link to the object file.

---

But you had mentioned that you have already done this.Let me digg further and let  u know

[Simran_K]

Hi Dorna,

If you include the file as #include "ni488.h", you need to make sure the ni488.h file is included in the project. If it is not please include the file as #include <ni488.h>.

Thank you,

[dorna]

Thanks a lot! I was missing that line actually, I had the gpib-32.obj added to my project but I hadn't added that command ..\gpib-32.obj, this is what worked for me (in Dev C++), in addition to what I had above:

The project has to be win32 console.

 In project tab --> project options --> parameters --> under the "linker" text box add: "..\gpib-32.obj"

[simon27]

Hi, I got the same problem with Qt.

When I'm tring to call the "ibdev" function I got  "undefined reference to `ibdev@24' "

My pro file:

QT       += core gui

TARGET      = dx2
TEMPLATE    = app

# configuracin National Instruments NI4882 
# Windows Qt LGPL (compilador mingw)
INCLUDEPATH += "C:/Program Files/National Instruments/Shared/ExternalCompilerSupport/C/include"
win32-msvc:LIBS += "C:/Program Files/National Instruments/Shared/ExternalCompilerSupport/C/lib32/msvc" gpib-32.obj

SOURCES += main.cpp\
        dx2.cpp

HEADERS  += dx2.h

FORMS    += dx2.ui

And my Qt C++ code is

#include "dx2.h"
#include "ui_dx2.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <windows.h>
#include <conio.h>
#include <QFile>

#include "ni4882.h"

#define _CRT_SECURE_NO_DEPRECATE
#define ARRAYSIZE_IN			100   // Size of read buffer
#define GPIB0					0     // Board handle
#define BDINDEX					0     // Board Index
#define PRIMARY_ADDR_OF_DMM		1     // Primary address of device
#define NO_SECONDARY_ADDR		0     // Secondary address of device
#define TIMEOUT					11    // Timeout value = 1 seconds
#define EOTMODE					1     // Enable the END message
#define EOSMODE					0     // Disable the EOS mode
#define DEFAULT_BUFFER			2048
#define MAX_ACL_BYTES			768
#define BUFFERSIZE				256

char ErrorMnemonic[29][5] = { "EDVR", "ECIC", "ENOL", "EADR", "EARG",
                              "ESAC", "EABO", "ENEB", "EDMA", "",
                              "EOIP", "ECAP", "EFSO", "",     "EBUS",
                              "ESTB", "ESRQ", "",     "",      "",
                              "ETAB", "ELCK", "EARM", "EHDL",  "",
                              "",     "EWIP", "ERST", "EPWR" };

int Dev;
dx2::dx2(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::dx2)
{
    ui->setupUi(this);
    // read configuration
    PGM_CONFIG pgmConfig;
    pgmConfig.gpibAddress = ui->addressNum->value();
    pgmConfig.devHandle = ibdev(BDINDEX, pgmConfig.gpibAddress, NO_SECONDARY_ADDR, TIMEOUT, EOTMODE, EOSMODE);
    qDebug("GPIB address is = %d\n",pgmConfig.gpibAddress);
  
}

My setup:

Win XP SP3

Qt 4.7.3

NI4882

[simon27]

Solve this issue by this link

http://forums.ni.com/t5/Instrument-Control-GPIB-Serial/Access-ni4882-dll-with-Qt-and-MinGW/td-p/1985...

Thanks