先放一个完整的cmake命令
cmake -D CMAKE_BUILD_TYPE=Release -D ENABLE_PRECOMPILED_HEADERS=OFF -D CMAKE_EXE_LINKER_FLAGS=-lcblas -D WITH_CUDA=OFF -D CMAKE_INSTALL_PREFIX=/usr/local ..
前置
修改cuda部分源码，参考链接
1）修改 /usr/local/cuda/include/cuda_gl_interop.h 的62行到68行，修改后如下：
sudo gedit /usr/local/cuda/include/cuda_gl_interop.h
此部分修改为
//
//
//
//
//
//
错误1
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)
原因解析：
cuda9不再支持2.0架构
解决方法:
参考链接
1:在 opencv-3.2.0/cmake 文件夹下找到 FindCUDA.cmake 文件,对其进行修改
cd opencv-3.2.0/cmake
sudo gedit FindCUDA.cmake
1）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)
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)
2: 在 opencv-3.2.0/cmake 文件夹下找到文件 OpenCVDetectCUDA.cmake,对其进行修改
cd opencv-3.2.0/cmake
sudo gedit 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")
...
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")
...
第三步: Cuda9或者Cuda10及以后的版本 中有一个单独的halffloat(cuda_fp16.h)头文件,也应该被包括在opencv的目录里
将头文件cuda_fp16.h添加至 opencv/modules/cudev/include/opencv2/cudev/common.hpp
cd opencv-3.2.0/modules/cudev/include/opencv2/cudev
sudo gedit common.hpp
即在common.hpp中添加
#include <cuda_fp16.h>
重新cmake
cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local ..
错误2
/usr/include/c++/7/cstdlib:75:15: fatal error: stdlib.h: No such file or directory #include_next <stdlib.h>
参考链接
原因分析：
这是由于gcc7已经吧stdlib.h纳入了libstdc++以进行更好的优化，C Library的头文件stdlib.h使用 Include_next，而include_next对gcc系统头文件路径很敏感。
推荐的修复方法是不要把include路径作为系统目录，而是使用标准方式包含include 目录
解决方法：
在编译opecv-3.2.0时，加入选项 -D ENABLE_PRECOMPILED_HEADERS=OFF：
# 完整的命令
cmake -D CMAKE_BUILD_TYPE=Release -D ENABLE_PRECOMPILED_HEADERS=OFF -D CMAKE_INSTALL_PREFIX=/usr/local ..
错误3
../../lib/libopencv_core.so.3.2.0: undefined reference to `cblas_zgemm(CBLAS_ORDER, CBLAS_TRANSPOSE, CBLAS_TRANSPOSE, int, int, int, void const*, void const*, int, void const*, int, void const*, void*, int)'
../../lib/libopencv_core.so.3.2.0: undefined reference to `cblas_dgemm(CBLAS_ORDER, CBLAS_TRANSPOSE, CBLAS_TRANSPOSE, int, int, int, double, double const*, int, double const*, int, double, double*, int)'
../../lib/libopencv_core.so.3.2.0: undefined reference to `cblas_sgemm(CBLAS_ORDER, CBLAS_TRANSPOSE, CBLAS_TRANSPOSE, int, int, int, float, float const*, int, float const*, int, float, float*, int)'
../../lib/libopencv_core.so.3.2.0: undefined reference to `cblas_cgemm(CBLAS_ORDER, CBLAS_TRANSPOSE, CBLAS_TRANSPOSE, int, int, int, void const*, void const*, int, void const*, int, void const*, void*, int)'
collect2: error: ld returned 1 exit status
apps/annotation/CMakeFiles/opencv_annotation.dir/build.make:103: recipe for target 'bin/opencv_annotation' failed
make[2]: *** [bin/opencv_annotation] Error 1
CMakeFiles/Makefile2:6153: recipe for target 'apps/annotation/CMakeFiles/opencv_annotation.dir/all' failed
make[1]: *** [apps/annotation/CMakeFiles/opencv_annotation.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
参考链接
在cmake时加入-D CMAKE_EXE_LINKER_FLAGS=-lcblas选项
sudo apt-get install libopenblas-dev
cmake -D CMAKE_BUILD_TYPE=Release -D ENABLE_PRECOMPILED_HEADERS=OFF -D CMAKE_EXE_LINKER_FLAGS=-lcblas -D CMAKE_INSTALL_PREFIX=/usr/local ..
错误4
n file included from /home/lusx/opencv-3.2.0/modules/core/src/hal_internal.cpp:49:0:
/home/lusx/opencv-3.2.0/build/opencv_lapack.h:2:10: fatal error: LAPACKE_H_PATH-NOTFOUND/lapacke.h: No such file or directory
#include "LAPACKE_H_PATH-NOTFOUND/lapacke.h"
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
modules/core/CMakeFiles/opencv_core.dir/build.make:522: recipe for target 'modules/core/CMakeFiles/opencv_core.dir/src/hal_internal.cpp.o' failed
make[2]: *** [modules/core/CMakeFiles/opencv_core.dir/src/hal_internal.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In member function ‘void cv::EigenvalueDecomposition::compute(cv::InputArray)’:
cc1plus: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow]
CMakeFiles/Makefile2:1195: recipe for target 'modules/core/CMakeFiles/opencv_core.dir/all' failed
make[1]: *** [modules/core/CMakeFiles/opencv_core.dir/all] Error 2
Makefile:162: recipe for target 'all' failed
make: *** [all] Error 2
解决：
找到报错的文件opencv-3.2.0/build/opencv_lapack.h,将第二行改为以下内容
#include "lapacke.h"
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