Linker issue with CUDA API libraries

Cobra91151

Hi! I want to add Nvidia CUDA API to Qt (OS: Windows | Qt 5.7.1).

I have included:

.pro file

INCLUDEPATH += "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v8.0\\include"

win32 {
    contains(QMAKE_TARGET.arch, x86_64) {
      LIBS += "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v8.0\\lib\\x64\\cudadevrt.lib"
    } else {
      LIBS += "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v8.0\\lib\\Win32\\cudadevrt.lib"
    }
}

test.h file
#include <cuda_runtime.h>

I get errors in test.cpp :

Screenshot:

alt text

I have test it in Visual Studio 2015 as console project and it works, but not in Qt.

How to fix it? Thanks in advance.

Chris Kawa

That's not how you pass libraries to the linker. Change this:

LIBS += "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v8.0\\lib\\x64\\cudadevrt.lib"

to

LIBS += -L"C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v8.0/lib/x64" -lcudadevrt

That's -L for the path and -l(lowercase L) for the library name without the extension.
After that re-run qmake (menu Build->Run qmake).

Cobra91151

@Chris-Kawa

I have changed to:

INCLUDEPATH += "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v8.0\\include"

win32 {
    contains(QMAKE_TARGET.arch, x86_64) {
      LIBS += -L"C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v8.0/lib/x64" -lcudadevrt
    } else {
      LIBS += -L"C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v8.0/lib/Win32" -lcudadevrt
    }
}

Run clean/run qmake/build but the errors still exists.

Cobra91151

@Chris-Kawa

I have found the bug and fixed. Thanks.

vaibs1224

@chris-kawa
Please tell me how to solved this issue..I am troubling for solving this issue on windows platform

aha_1980

@vaibs1224

Can you provide some more information?

Which compiler?
32 or 64 bit?
Can you show your .pro file and the actual linker command from the Compile Output?