链接Cuda在C ++问题

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我搜索了现有的问题，但我似乎无法解决这个问题。

我有一个blur_mask.cc文件：

#include< iostream> #include< ctime> #include< opencv2 / highgui / highgui.hpp> #include< opencv2 / gpu / gpu.hpp> #include< vector_types.h> #include< cuda.h> #include< cuda_runtime.h> externCvoid gpuBlurMask（unsigned char * srcData，int srcStep，uchar3 * dst，int dstStep，int width，int height，float * mask，int maskStep，int maskWidth，int maskHeight，int blockSize = 16）; using namespace std; using namespace cv; using namespace cv :: gpu; void blurMask（Mat& src，Mat& dst，Mat& mask）{ GpuMat gpuSrc，gpuDst，gpuMask; gpuSrc.upload（src）; gpuDst.upload（dst）; gpuMask.upload（mask）; gpuBlurMask（gpuSrc.data，gpuSrc.step，gpuDst.ptr< uchar3>（），gpuDst.step，gpuSrc.cols，gpuSrc.rows，gpuMask.ptr< float>（），gpuMask。 step，gpuMask.cols，gpuMask.rows）; gpuDst.download（dst）; } ...

一个gpu_blur.cu文件包含

externC void gpuBlurMask（unsigned char * srcData，int srcStep，uchar3 * dst，int dstStep，int width，int height，float * mask，int maskStep，int maskWidth，int maskHeight，int blockSize = 16）{ ...

当我做

nvcc -c -o gpu_blur gpu_blur.cu

我没有错误，但在编译时

g ++ -o blur_mask blur_mask.cc gpu_blur -I / usr / local / cuda / include / -lopencv_core -lopencv_highgui -lopencv_gpu

我得到以下错误：

g ++ -o blur_mask blur_mask.cc gpu_blur - I / usr / local / cuda / include / -lopencv_core -lopencv_highgui -lopencv_gpu -lcuda gpu_blur：在函数`gpuBlurMask'中： tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(。text + 0x59）：undefined引用`cudaMallocArray' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :( .text + 0xa0）：未定义引用`cudaMemcpy2DToArray' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(。+ 0x139）：undefined参考`cudaConfigureCall'。 tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(文字+ 0x16f）：未定义的参考`cudaDeviceSynchronize' gpu_blur：在功能`__cudaUnregisterBinaryUtil（）： tmpxft_00000905_00000000- 3_gpu_blur.cudafe1.cpp :(。text + 0x184）：未定义的引用`__cudaUnregisterFatBinary' gpu_blur：在函数`__device_stub__Z14blurMaskKernelP6uchar3iiiPfiii（uchar3 *，int，int，int，float *，int，int，int） tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(文字+ 0x1b9）：未定义的参考`cudaSetupArgument'。 tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(文字+ 0x1dc）：未定义的参考`cudaSetupArgument tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(文字+到0x1FF）：未定义的参考`cudaSetupArgument'。 tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(文字+ 0x222）：未定义的参考`cudaSetupArgument tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(。text + 0x245）：未定义的引用`cudaSetupArgument' gpu_blur：tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(。text + 0x264）：更多未定义的引用`cudaSetupArgument'follow gpu_blur：在函数`__nv_cudaEntityRegisterCallback（void **）'中： tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :( .text + 0x381）：未定义引用`__cudaRegisterFunction' 。tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(文字+ 0x3af）：未定义的参考`__cudaRegisterTexture' gpu_blur：在功能`__sti ____ cudaRegisterAll_43_tmpxft_00000905_00000000_6_gpu_blur_cpp1_ii_srcTex（）： tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :(文+ 0x3c3）：未定义的参考`__cudaRegisterFatBinary' gpu_blur：在功能`cudaChannelFormatDesc cudaCreateChannelDesc< unsigned char型>（）： tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :( text._Z21cudaCreateChannelDescIhE21cudaChannelFormatDescv [cudaChannelFormatDesc cudaCreateChannelDesc<。 unsigned char型>（）] + 0x34）：未定义的参考`cudaCreateChannelDesc' gpu_blur：在功能`cudaError cudaBindTextureToArray< unsigned char型，2，（cudaTextureReadMode）0>（质地LT; unsigned char型，2，（cudaTextureReadMode）0> ;常量和放大器;，cudaArray常量*，cudaChannelFormatDesc常量和放大器;）： tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :( text._Z22cudaBindTextureToArrayIhLi2EL19cudaTextureReadMode0EE9cudaErrorRK7textureIT_XT0_EXT1_EEPK9cudaArrayRK21cudaChannelFormatDesc [cudaError cudaBindTextureToArray< unsigned char型，2，（cudaTextureReadMode）0>（质地LT; unsigned char型。 2，（cudaTextureReadMode）0>常量和放大器;，cudaArray常量*，cudaChannelFormatDesc常量和放大器;）] + 0×27）：未定义的参考`cudaBindTextureToArray' gpu_blur：在功能`cudaError cudaLaunch<焦炭>（字符*）'： tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp :( .text._Z10cudaLaunchIcE9cudaErrorPT_ [cudaError cudaLaunch< char>（char *）] + 0x14）：未定义的引用`cudaLaunch' collect2：ld返回1退出状态$ b谢谢。

解决方案

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您需要链接到cudart库（ -L / usr / local / cuda / lib64 -lcudart ）

I've searched existing questions, but I can't seem to solve this.

I have a blur_mask.cc file with:

#include <iostream> #include <ctime> #include <opencv2/highgui/highgui.hpp> #include <opencv2/gpu/gpu.hpp> #include <vector_types.h> #include <cuda.h> #include <cuda_runtime.h> extern "C" void gpuBlurMask(unsigned char* srcData, int srcStep, uchar3* dst, int dstStep, int width, int height, float *mask, int maskStep, int maskWidth, int maskHeight, int blockSize=16); using namespace std; using namespace cv; using namespace cv::gpu; void blurMask(Mat& src, Mat& dst, Mat& mask) { GpuMat gpuSrc, gpuDst, gpuMask; gpuSrc.upload(src); gpuDst.upload(dst); gpuMask.upload(mask); gpuBlurMask(gpuSrc.data, gpuSrc.step, gpuDst.ptr<uchar3>(), gpuDst.step, gpuSrc.cols, gpuSrc.rows, gpuMask.ptr<float>(), gpuMask.step, gpuMask.cols, gpuMask.rows); gpuDst.download(dst); } ...

And a gpu_blur.cu file that contains

extern "C" void gpuBlurMask(unsigned char* srcData, int srcStep, uchar3* dst, int dstStep, int width, int height, float *mask, int maskStep, int maskWidth, int maskHeight, int blockSize=16) { ...

When I do

nvcc -c -o gpu_blur gpu_blur.cu

I get no errors, but when compiling

g++ -o blur_mask blur_mask.cc gpu_blur -I /usr/local/cuda/include/ -lopencv_core -lopencv_highgui -lopencv_gpu

I get the following errors:

g++ -o blur_mask blur_mask.cc gpu_blur -I /usr/local/cuda/include/ -lopencv_core -lopencv_highgui -lopencv_gpu -lcuda gpu_blur: In function `gpuBlurMask': tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x59): undefined reference to `cudaMallocArray' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0xa0): undefined reference to `cudaMemcpy2DToArray' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x139): undefined reference to `cudaConfigureCall' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x16f): undefined reference to `cudaDeviceSynchronize' gpu_blur: In function `__cudaUnregisterBinaryUtil()': tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x184): undefined reference to `__cudaUnregisterFatBinary' gpu_blur: In function `__device_stub__Z14blurMaskKernelP6uchar3iiiPfiii(uchar3*, int, int, int, float*, int, int, int)': tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x1b9): undefined reference to `cudaSetupArgument' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x1dc): undefined reference to `cudaSetupArgument' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x1ff): undefined reference to `cudaSetupArgument' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x222): undefined reference to `cudaSetupArgument' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x245): undefined reference to `cudaSetupArgument' gpu_blur:tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x264): more undefined references to `cudaSetupArgument' follow gpu_blur: In function `__nv_cudaEntityRegisterCallback(void**)': tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x381): undefined reference to `__cudaRegisterFunction' tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x3af): undefined reference to `__cudaRegisterTexture' gpu_blur: In function `__sti____cudaRegisterAll_43_tmpxft_00000905_00000000_6_gpu_blur_cpp1_ii_srcTex()': tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text+0x3c3): undefined reference to `__cudaRegisterFatBinary' gpu_blur: In function `cudaChannelFormatDesc cudaCreateChannelDesc<unsigned char>()': tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text._Z21cudaCreateChannelDescIhE21cudaChannelFormatDescv[cudaChannelFormatDesc cudaCreateChannelDesc<unsigned char>()]+0x34): undefined reference to `cudaCreateChannelDesc' gpu_blur: In function `cudaError cudaBindTextureToArray<unsigned char, 2, (cudaTextureReadMode)0>(texture<unsigned char, 2, (cudaTextureReadMode)0> const&, cudaArray const*, cudaChannelFormatDesc const&)': tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text._Z22cudaBindTextureToArrayIhLi2EL19cudaTextureReadMode0EE9cudaErrorRK7textureIT_XT0_EXT1_EEPK9cudaArrayRK21cudaChannelFormatDesc[cudaError cudaBindTextureToArray<unsigned char, 2, (cudaTextureReadMode)0>(texture<unsigned char, 2, (cudaTextureReadMode)0> const&, cudaArray const*, cudaChannelFormatDesc const&)]+0x27): undefined reference to `cudaBindTextureToArray' gpu_blur: In function `cudaError cudaLaunch<char>(char*)': tmpxft_00000905_00000000-3_gpu_blur.cudafe1.cpp:(.text._Z10cudaLaunchIcE9cudaErrorPT_[cudaError cudaLaunch<char>(char*)]+0x14): undefined reference to `cudaLaunch' collect2: ld returned 1 exit status

Thank you.

解决方案

You need to link to cudart library (-L/usr/local/cuda/lib64 -lcudart)