C++ linking error LNK2019 - c++

Question

Can anybody please help me to configure Visual Studio 2005 (if that's the solution to the problem). I'm using some external libs and I'm getting this error:
1>Compiling...
1>main.cpp
1>c:\documents and settings\mz07\desktop\project\vs8test1\vs8test1\main.cpp(99) : warning C4996: 'getch' was declared deprecated
1> c:\program files\microsoft visual studio 8\vc\include\conio.h(145) : see declaration of 'getch'
1> Message: 'The POSIX name for this item is deprecated. Instead, use the ISO C++ conformant name: _getch. See online help for details.'
1>c:\documents and settings\mz07\desktop\project\vs8test1\vs8test1\main.cpp(110) : warning C4996: 'getch' was declared deprecated
1> c:\program files\microsoft visual studio 8\vc\include\conio.h(145) : see declaration of 'getch'
1> Message: 'The POSIX name for this item is deprecated. Instead, use the ISO C++ conformant name: _getch. See online help for details.'
1>c:\documents and settings\mz07\desktop\project\vs8test1\vs8test1\main.cpp(128) : warning C4996: 'getch' was declared deprecated
1> c:\program files\microsoft visual studio 8\vc\include\conio.h(145) : see declaration of 'getch'
1> Message: 'The POSIX name for this item is deprecated. Instead, use the ISO C++ conformant name: _getch. See online help for details.'
1>Compiling manifest to resources...
1>Linking...
1>hdu.lib(hduError.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) class std::basic_ostream<char,struct std::char_traits<char> > & __cdecl std::operator<<(class std::basic_ostream<char,struct std::char_traits<char> > &,char const *)" (__imp_??6std##YAAAV?$basic_ostream#DU?$char_traits#D#std###0#AAV10#PBD#Z) referenced in function "class std::basic_ostream<char,struct std::char_traits<char> > & __cdecl operator<<(class std::basic_ostream<char,struct std::char_traits<char> > &,struct HDErrorInfo const &)" (??6#YAAAV?$basic_ostream#DU?$char_traits#D#std###std##AAV01#ABUHDErrorInfo###Z)
1>C:\Documents and Settings\mz07\Desktop\project\vs8Test1\Debug\vs8Test1.exe : fatal error LNK1120: 1 unresolved externals
I've been googling it for hours. PLEASE, stackoverflow is my last hope!
Sorry I forgot to include the code:
#include "atl/stdafx.h"
#include <cstdio>
#include <cassert>
#if defined(WIN32)
# include <conio.h>
#else
# include "conio.h"
#endif
#include <HD/hd.h>
#include <HDU/hduVector.h>
#include <HDU/hduError.h>
#pragma comment(lib, "hdu.lib")
#pragma comment(lib, "hlu.lib")
#pragma comment(lib, "hd.lib")
#pragma comment(lib, "hl.lib")
/*******************************************************************************
Haptic sphere callback.
The sphere is oriented at 0,0,0 with radius 40, and provides a repelling force
if the device attempts to penetrate through it.
*******************************************************************************/
HDCallbackCode HDCALLBACK FrictionlessSphereCallback(void *data)
{
const double sphereRadius = 40.0;
const hduVector3Dd spherePosition(0,0,0);
// Stiffness, i.e. k value, of the sphere. Higher stiffness results
// in a harder surface.
const double sphereStiffness = .25;
hdBeginFrame(hdGetCurrentDevice());
// Get the position of the device.
hduVector3Dd position;
hdGetDoublev(HD_CURRENT_POSITION, position);
// Find the distance between the device and the center of the
// sphere.
double distance = (position-spherePosition).magnitude();
// If the user is within the sphere -- i.e. if the distance from the user to
// the center of the sphere is less than the sphere radius -- then the user
// is penetrating the sphere and a force should be commanded to repel him
// towards the surface.
if (distance < sphereRadius)
{
// Calculate the penetration distance.
double penetrationDistance = sphereRadius-distance;
// Create a unit vector in the direction of the force, this will always
// be outward from the center of the sphere through the user's
// position.
hduVector3Dd forceDirection = (position-spherePosition)/distance;
// Use F=kx to create a force vector that is away from the center of
// the sphere and proportional to the penetration distance, and scsaled
// by the object stiffness.
// Hooke's law explicitly:
double k = sphereStiffness;
hduVector3Dd x = penetrationDistance*forceDirection;
hduVector3Dd f = k*x;
hdSetDoublev(HD_CURRENT_FORCE, f);
}
hdEndFrame(hdGetCurrentDevice());
HDErrorInfo error;
if (HD_DEVICE_ERROR(error = hdGetError()))
{
hduPrintError(stderr, &error, "Error during main scheduler callback\n");
if (hduIsSchedulerError(&error))
{
return HD_CALLBACK_DONE;
}
}
return HD_CALLBACK_CONTINUE;
}
/******************************************************************************
main function
Initializes the device, creates a callback to handle sphere forces, terminates
upon key press.
******************************************************************************/
int main(int argc, char* argv[])
{
HDErrorInfo error;
// Initialize the default haptic device.
HHD hHD = hdInitDevice(HD_DEFAULT_DEVICE);
if (HD_DEVICE_ERROR(error = hdGetError()))
{
hduPrintError(stderr, &error, "Failed to initialize haptic device");
fprintf(stderr, "\nPress any key to quit.\n");
getch();
return -1;
}
// Start the servo scheduler and enable forces.
hdEnable(HD_FORCE_OUTPUT);
hdStartScheduler();
if (HD_DEVICE_ERROR(error = hdGetError()))
{
hduPrintError(stderr, &error, "Failed to start scheduler");
fprintf(stderr, "\nPress any key to quit.\n");
getch();
return -1;
}
// Application loop - schedule our call to the main callback.
HDSchedulerHandle hSphereCallback = hdScheduleAsynchronous(
FrictionlessSphereCallback, 0, HD_DEFAULT_SCHEDULER_PRIORITY);
printf("Sphere example.\n");
printf("Move the device around to feel a frictionless sphere\n\n");
printf("Press any key to quit.\n\n");
while (!_kbhit())
{
if (!hdWaitForCompletion(hSphereCallback, HD_WAIT_CHECK_STATUS))
{
fprintf(stderr, "\nThe main scheduler callback has exited\n");
fprintf(stderr, "\nPress any key to quit.\n");
getch();
break;
}
}
// For cleanup, unschedule our callbacks and stop the servo loop.
hdStopScheduler();
hdUnschedule(hSphereCallback);
hdDisableDevice(hHD);
return 0;
}

Answer 1

I think the library you're importing (hdu.lib) is built with a different runtime library - either you're mixing debug and release libraries here or static vs DLL runtimes.

Answer 2

It looks to me like you aren't linking in the C++ library. If you right-click on your project's "properties", and check Configuration Properties -> Linker -> Input, does your "Additional Dependencies" line include "libcpmt.lib" ?

Answer 3

It'd help if you could post the commandline switches the linker is running, by that I mean the full command.
It looks like this hdu libarary has a dependency on the C++ iostream library, can you check if your linker settings are specifying the iostream library.