CUDA，Win7，Qt Creator - LNK1104：无法打开文件＆＃39; <cuda file =“”> .obj＆＃39;

时间：2015-08-28 20:21:09

标签： windows qt cuda

我试图在Qt Creator，Win7和VS2012编译器中使用CUDA。我在Windows上有Qt的经验，但是设置将CUDA代码集成到Qt项目中是不成功的。我已经尝试了几个已发布的解决方案（例如Compiling Cuda code in Qt Creator on Windows），但没有成功。我最终决定在我的博客帖子https://cudaspace.wordpress.com/2012/07/05/qt-creator-cuda-linux-review/上简化和建立我的代码，但我仍然遇到问题。

目前，我收到错误＆＃34; LNK1104：无法打开文件＆＃39; obj \ cuda_code.obj＆＃39; ＆＃34;

我的.pro文件是：

QT       += core
QT       -= gui

TARGET = QtCuda
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp \
           cuda_code.cu

# project build directories
DESTDIR     = $$PWD
OBJECTS_DIR = $$DESTDIR/obj

# C++ flags
QMAKE_CXXFLAGS_RELEASE =-O3

# Cuda sources
CUDA_SOURCES += cuda_code.cu

# Path to cuda toolkit install
CUDA_DIR      = "C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v7.0"

# Path to header and libs files
INCLUDEPATH  += $$CUDA_DIR/include
QMAKE_LIBDIR += $$CUDA_DIR/lib/x64

# libs used in your code
LIBS += -lcudart -lcuda

# GPU architecture
CUDA_ARCH     = sm_50 

# Here are some NVCC flags I've always used by default.
NVCCFLAGS     = --compiler-options -use_fast_math


# Prepare the extra compiler configuration (taken from the nvidia forum - i'm not an expert in this part)
CUDA_INC = $$join(INCLUDEPATH,' -I','-I',' ')

cuda.commands = $$CUDA_DIR/bin/nvcc -m64 -O3 -arch=$$CUDA_ARCH -c $$NVCCFLAGS \
                $$CUDA_INC $$LIBS  ${QMAKE_FILE_NAME} -o ${QMAKE_FILE_OUT} \
                2>&1 | sed -r \"s/\\(([0-9]+)\\)/:\\1/g\" 1>&2

cuda.dependency_type = TYPE_C

cuda.depend_command = $$CUDA_DIR/bin/nvcc -O3 -M $$CUDA_INC $$NVCCFLAGS   ${QMAKE_FILE_NAME}

cuda.input = $$CUDA_SOURCES

cuda.output = $$OBJECTS_DIR/${QMAKE_FILE_BASE}_cuda.obj

# Tell Qt that we want add more stuff to the Makefile
QMAKE_EXTRA_COMPILERS += cuda

我的main.cpp 

#include <QtCore/QCoreApplication>
#include <iostream>
using namespace std;

#include <cuda_runtime.h>

extern "C"
cudaError_t cuda_main();

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    cudaError_t cuerr = cuda_main();

    if (cuerr != cudaSuccess) cout << "CUDA Error: " << cudaGetErrorString( cuerr ) << endl;

    return a.exec();
}

我的cuda文件（cuda_code.cu）：

#include <thrust/host_vector.h>
#include <thrust/device_vector.h>
#include <thrust/sort.h>
extern "C"
cudaError_t cuda_main()
{
    // generate 16M random numbers on the host
    thrust::host_vector<int> h_vec(1 << 24);
    thrust::generate(h_vec.begin(), h_vec.end(), rand);

    // transfer data to the device
    thrust::device_vector<int> d_vec = h_vec;

    // sort data on the device (805 Mkeys/sec on GeForce GTX 480)
    thrust::sort(d_vec.begin(), d_vec.end());

    // transfer data back to host
    thrust::copy(d_vec.begin(), d_vec.end(), h_vec.begin());

    return cudaGetLastError();
}

1 个答案:

答案 0 :(得分：3)

通过进行以下更改，OP能够获得成功的编译链接：

1）在.pro文件中，添加了

MSVCRT_LINK_FLAG_DEBUG =“/ MDd”

MSVCRT_LINK_FLAG_RELEASE =“/ MD”

以及（对cuda.command声明） -Xcompiler $$ MSVCRT_LINK_FLAG_DEBUG -or- -Xcompiler $$ MSVCRT_LINK_FLAG_RELEASE

如下所述： Compile cuda file error: "runtime library" mismatch value 'MDd_DynamicDebug' doesn't match value 'MTd_StaticDebug' in vectorAddition_cuda.o

2）在makefile中还有一个非常奇怪的细节我必须手动修复。我希望有一个真正的解决方案，但我无法弄明白。

在makefile的顶部，有几个定义，包括LIBS的定义。在仔细检查了这个定义之后，我发现在库位置的规范中有一组额外的引号。像这样：

LIBS          = /LIBPATH:"C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v7.0\lib\x64" ""C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v7.0\lib\x64"\cuda.lib" ""C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v7.0\lib\x64"\cudart.lib" /LIBPATH:C:\Qt\5.2.1\msvc2012_64_opengl\lib C:\Qt\5.2.1\msvc2012_64_opengl\lib\Qt5Cored.lib

仔细观察，您可以在cuda.lib和cudart.lib的位置看到额外的引号集。我无法弄清楚可能导致这种情况的原因（可能是我的.pro文件中的内容），但如果我手动删除了额外的引用，则编译/链接有效。这是makefile中更正的行：

LIBS          = /LIBPATH:"C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v7.0\lib\x64" "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v7.0\lib\x64\cuda.lib" "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v7.0\lib\x64\cudart.lib" /LIBPATH:C:\Qt\5.2.1\msvc2012_64_opengl\lib C:\Qt\5.2.1\msvc2012_64_opengl\lib\Qt5Cored.lib

我确定希望能够在我的.pro文件中修复此问题，以便不显示这些额外的引用。建议将不胜感激。

供参考，这是我最新的.pro文件。

QT       += core
QT       -= gui

TARGET = QtCuda
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp \
           cuda_code.cu

# project build directories
DESTDIR     = $$PWD
OBJECTS_DIR = $$DESTDIR/obj

# C++ flags
QMAKE_CXXFLAGS_RELEASE =-O3

# Cuda sources
CUDA_SOURCES += cuda_code.cu

# Path to cuda toolkit install
CUDA_DIR      = "C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v7.0"

# Path to header and libs files
INCLUDEPATH  += $$CUDA_DIR/include
QMAKE_LIBDIR += $$CUDA_DIR/lib/x64

SYSTEM_TYPE = 64            # '32' or '64', depending on your system

# libs used in your code
LIBS += -lcuda -lcudart

# GPU architecture
CUDA_ARCH     = sm_50

# Here are some NVCC flags I've always used by default.
NVCCFLAGS     = --use_fast_math


# Prepare the extra compiler configuration (taken from the nvidia forum - i'm not an expert in this part)
CUDA_INC = $$join(INCLUDEPATH,'" -I"','-I"','"')


# MSVCRT link option (static or dynamic, it must be the same with your Qt SDK link option)
MSVCRT_LINK_FLAG_DEBUG = "/MDd"
MSVCRT_LINK_FLAG_RELEASE = "/MD"


# Tell Qt that we want add more stuff to the Makefile
QMAKE_EXTRA_COMPILERS += cuda

# Configuration of the Cuda compiler
CONFIG(debug, debug|release) {
    # Debug mode
    cuda_d.input = CUDA_SOURCES
    cuda_d.output = $$OBJECTS_DIR/${QMAKE_FILE_BASE}.obj
    cuda_d.commands = $$CUDA_DIR/bin/nvcc.exe -D_DEBUG $$NVCC_OPTIONS $$CUDA_INC $$LIBS --machine $$SYSTEM_TYPE \
                     -arch=$$CUDA_ARCH -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME} -Xcompiler $$MSVCRT_LINK_FLAG_DEBUG
    cuda_d.dependency_type = TYPE_C
    QMAKE_EXTRA_COMPILERS += cuda_d
}
else {
    # Release mode
    cuda.input = CUDA_SOURCES
    cuda.output = $$CUDA_OBJECTS_DIR/${QMAKE_FILE_BASE}.obj
    cuda.commands = $$CUDA_DIR/bin/nvcc.exe $$NVCC_OPTIONS $$CUDA_INC $$LIBS --machine $$SYSTEM_TYPE \
                    -arch=$$CUDA_ARCH -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME} -Xcompiler $$MSVCRT_LINK_FLAG_RELEASE
    cuda.dependency_type = TYPE_C
    QMAKE_EXTRA_COMPILERS += cuda
}

[注意：此答案是通过对包含解决方案的问题的编辑创建的。它已被添加为社区wiki条目，以便从CUDA标签的未答复列表中获取问题]

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