[mcj]CMake Error: The following variables are used in this project, but they are set to NOTFOUND.-马春杰杰

使用Cmake编译opencv源码遇到如下错误

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.

Please set them or make sure they are set and tested correctly in the CMake files:

CUDA_nppi_LIBRARY (ADVANCED)

linked by target “opencv_cudev” in directory D:/Cproject/opencv/opencv/sources/modules/cudev

linked by target “opencv_test_cudev” in directory D:/Cproject/opencv/opencv/sources/modules/cudev/test

linked by target “opencv_core” in directory D:/Cproject/opencv/opencv/sources/modules/core

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

原因解析：

cuda9不再支持2.0架构

解决方案如下：

1）.找到FindCUDA.cmake文件

找到行

find_cuda_helper_libs(nppi)

改为

find_cuda_helper_libs(nppial)
find_cuda_helper_libs(nppicc)
find_cuda_helper_libs(nppicom)
find_cuda_helper_libs(nppidei)
find_cuda_helper_libs(nppif)
find_cuda_helper_libs(nppig)
find_cuda_helper_libs(nppim)
find_cuda_helper_libs(nppist)
find_cuda_helper_libs(nppisu)
find_cuda_helper_libs(nppitc)

find_cuda_helper_libs(nppial)

find_cuda_helper_libs(nppicc)

find_cuda_helper_libs(nppicom)

find_cuda_helper_libs(nppidei)

find_cuda_helper_libs(nppif)

find_cuda_helper_libs(nppig)

find_cuda_helper_libs(nppim)

find_cuda_helper_libs(nppist)

find_cuda_helper_libs(nppisu)

find_cuda_helper_libs(nppitc)

2）.找到行

set(CUDA_npp_LIBRARY "${CUDA_nppc_LIBRARY};${CUDA_nppi_LIBRARY};${CUDA_npps_LIBRARY}")

改为

set(CUDA_npp_LIBRARY "${CUDA_nppc_LIBRARY};${CUDA_nppial_LIBRARY};${CUDA_nppicc_LIBRARY};${CUDA_nppicom_LIBRARY};${CUDA_nppidei_LIBRARY};${CUDA_nppif_LIBRARY};${CUDA_nppig_LIBRARY};${CUDA_nppim_LIBRARY};${CUDA_nppist_LIBRARY};${CUDA_nppisu_LIBRARY};${CUDA_nppitc_LIBRARY};${CUDA_npps_LIBRARY}")

3）.找到行

unset(CUDA_nppi_LIBRARY CACHE)

改为

unset(CUDA_nppial_LIBRARY CACHE)
unset(CUDA_nppicc_LIBRARY CACHE)
unset(CUDA_nppicom_LIBRARY CACHE)
unset(CUDA_nppidei_LIBRARY CACHE)
unset(CUDA_nppif_LIBRARY CACHE)
unset(CUDA_nppig_LIBRARY CACHE)
unset(CUDA_nppim_LIBRARY CACHE)
unset(CUDA_nppist_LIBRARY CACHE)
unset(CUDA_nppisu_LIBRARY CACHE)
unset(CUDA_nppitc_LIBRARY CACHE)

unset(CUDA_nppial_LIBRARY CACHE)

unset(CUDA_nppicc_LIBRARY CACHE)

unset(CUDA_nppicom_LIBRARY CACHE)

unset(CUDA_nppidei_LIBRARY CACHE)

unset(CUDA_nppif_LIBRARY CACHE)

unset(CUDA_nppig_LIBRARY CACHE)

unset(CUDA_nppim_LIBRARY CACHE)

unset(CUDA_nppist_LIBRARY CACHE)

unset(CUDA_nppisu_LIBRARY CACHE)

unset(CUDA_nppitc_LIBRARY CACHE)

4）.找到文件OpenCVDetectCUDA.cmake

修改以下几行

...
set(__cuda_arch_ptx "")
if(CUDA_GENERATION STREQUAL "Fermi")
set(__cuda_arch_bin "2.0")
elseif(CUDA_GENERATION STREQUAL "Kepler")
set(__cuda_arch_bin "3.0 3.5 3.7")
...

...

set(__cuda_arch_ptx "")

if(CUDA_GENERATION STREQUAL "Fermi")

set(__cuda_arch_bin "2.0")

elseif(CUDA_GENERATION STREQUAL "Kepler")

set(__cuda_arch_bin "3.0 3.5 3.7")

...

改为

...
set(__cuda_arch_ptx "")
if(CUDA_GENERATION STREQUAL "Kepler")
set(__cuda_arch_bin "3.0 3.5 3.7")
elseif(CUDA_GENERATION STREQUAL "Maxwell")
set(__cuda_arch_bin "5.0 5.2")
...