用Cmake 编译OpenCV常见的错误

minGW32-make遇到的错误1：

[ 37%] Linking CXX shared library …\bin\libopencv_core341.dll
CMakeFiles\opencv_core.dir/objects.a: member CMakeFiles\opencv_core.dir/objects.
a(vs_version.rc.obj) in archive is not an object
collect2.exe: error: ld returned 1 exit status
modules\core\CMakeFiles\opencv_core.dir\build.make:2329: recipe for target ‘bin/
libopencv_core341.dll’ failed
mingw32-make[2]: *** [bin/libopencv_core341.dll] Error 1
CMakeFiles\Makefile2:1675: recipe for target ‘modules/core/CMakeFiles/opencv_cor
e.dir/all’ failed
mingw32-make[1]: *** [modules/core/CMakeFiles/opencv_core.dir/all] Error 2
Makefile:161: recipe for target ‘all’ failed
mingw32-make: *** [all] Error 2

解决方法

在cmake gui中添加条目OPENCV_VS_VERSIONINFO_SKIP = 1，再重新Configure，Generate。

常见错误2：

1. windres.exe: unknown option -- W ... ；或者connot find -lruntmchk

2、'sprintf_instead_use_StringCbPrintfA_ was not declared in this scope ..

解决方案：

1、在cmake中 取消勾选 ENABLE_PRECOMPILED_HEADERS，重新编译；

2、在..\opencv\sources\modules\videoio\src\cap_dshow.cpp
在#include "DShow.h"这一行前加上#define NO_DSHOW_STRSAFE

再次重新编译生成新的makefile,成功

常见错误三：

错误四：

:

** 缺少头文件include<sys/time>**

错误五

Building CXX object modules/python3/CMakeFiles/opencv_python3.dir/__/src2/cv2.cpp.obj

In file included from C:/Qt/Tools/mingw530_32/i686-w64-mingw32/include/c++/random:38:0,

from C:/Qt/Tools/mingw530_32/i686-w64-mingw32/include/c++/bits/stl_algo.h:66,

from C:/Qt/Tools/mingw530_32/i686-w64-mingw32/include/c++/algorithm:62,

from C:/Users/maxingxin/Downloads/opencv/sources/modules/core/include/opencv2/core/base.hpp:55,

from C:/Users/maxingxin/Downloads/opencv/sources/modules/core/include/opencv2/core.hpp:54,

from C:/Users/maxingxin/Downloads/opencv/build-sources-Desktop_Qt_5_10_1_MinGW_32bit-Default/modules/python_bindings_generator/pyopencv_generated_include.h:1,

from C:\Users\maxingxin\Downloads\opencv\sources\modules\python\src2\cv2.cpp:22:

C:/Qt/Tools/mingw530_32/i686-w64-mingw32/include/c++/cmath:1119:11: error: '::hypot' has not been declared

using ::hypot;

^

modules\python3\CMakeFiles\opencv_python3.dir\build.make:62: recipe for target 'modules/python3/CMakeFiles/opencv_python3.dir/__/src2/cv2.cpp.obj' failed

mingw32-make.exe[2]: *** [modules/python3/CMakeFiles/opencv_python3.dir/__/src2/cv2.cpp.obj] Error 1

CMakeFiles\Makefile2:7854: recipe for target 'modules/python3/CMakeFiles/opencv_python3.dir/all' failed

Makefile:161: recipe for target 'all' failed

这个的解决办法是：

把下面配置中的BUILD_opencv_python3和下面那个有python的off掉，然后点下面Apply configuration，然后重新build。终于成功了。

祝君顺利！！！！！！！！！！