c++ - CMake无法正确找到CUDA库

我正在尝试构建一个需要CUDA的程序。我提供给CMake脚本:

cmake -D CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda ..

找到CUDA，并且CMake正常运行:

staudt ~/workspace/clutbb/cluster/build $ cmake -D CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda ..
-- Found CUDA: /usr/local/cuda (found version "6.5")
-- Found Intel TBB
-- Boost version: 1.56.0
-- Found the following Boost libraries:
--   iostreams
--   program_options
-- Looking for include file pthread.h
-- Looking for include file pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Could NOT find SDL (missing:  SDL_LIBRARY SDL_INCLUDE_DIR)
-- Configuring done
-- Generating done
-- Build files have been written to: /home/i11/staudt/workspace/clutbb/cluster/build

但是，链接器步骤失败:

staudt ~/workspace/clutbb/cluster/build $ make
[ 69%] Built target cluster
Linking CXX executable clu
CMakeFiles/clu.dir/clu.cpp.o: In function `initCUDA(int&, CUctx_st*&, int const&)':
clu.cpp:(.text+0x517): undefined reference to `cuInit'
clu.cpp:(.text+0x52b): undefined reference to `cuDeviceGet'
clu.cpp:(.text+0x53f): undefined reference to `cuCtxCreate_v2'
clu.cpp:(.text+0x559): undefined reference to `cuDeviceGetName'
clu.cpp:(.text+0x55e): undefined reference to `cuCtxSynchronize'
CMakeFiles/clu.dir/clu.cpp.o: In function `exitCUDA(int&, CUctx_st*&)':
clu.cpp:(.text+0x684): undefined reference to `cuCtxDestroy_v2'
CMakeFiles/clu.dir/clu.cpp.o: In function `main':
clu.cpp:(.text.startup+0x1092): undefined reference to `cuCtxDestroy_v2'
clu.cpp:(.text.startup+0x10d1): undefined reference to `cuCtxSynchronize'
clu.cpp:(.text.startup+0x10e1): undefined reference to `cuCtxSynchronize'
collect2: error: ld returned 1 exit status
make[2]: *** [bin/clu] Fehler 1
make[1]: *** [bin/CMakeFiles/clu.dir/all] Fehler 2
make: *** [all] Fehler 2

所需的库位于/usr/local/cuda/lib64/stubs/libcuda.so，但是我如何指出它是cmake还是make？

最佳答案

在您现在发布的文件中，有多个项目层次结构。您在问题中发布的实际错误发生在基于clutbb/cluster/bin目录中的clu.cpp的clu项目的编译和链接过程中。

在同一目录中，有一个CMakeLists.txt文件。该文件控制项目层次结构的特定级别。

在此特定的CMakeLists.txt文件中，有以下部分:

cuda_add_executable(clu clu.cpp)
target_link_libraries(clu ${CUDA_LIBRARY} ${TBB_LIBRARY} ${Boost_LIBRARIES} rt)
target_link_libraries(clu cluster)

尝试将上面的中线修改为:

target_link_libraries(clu ${CUDA_LIBRARY} ${TBB_LIBRARY} ${Boost_LIBRARIES} rt cuda)

这应该修复链接器命令行中缺少的-lcuda。仍然有必要在计算机上为它提供libcuda.so的路径，但这可能不是必需的，这取决于计算机环境的设置方式。