引用：(13条消息) 用Cmake 编译OpenCV常见的错误_一枚小菜程序员的博客-CSDN博客_cmake编译opencv出错

错误一、编译64位opencv4.5.4过程中，遇到的问题：imshow()函数不能显示图片，添加waitKey（）也不行。调试debug过程中，在OPENCV_HAL_IMPL_AVX_INI（）报错，解决办法

修改cmake界面中的CPU_DISPATCH，如下图：

 错误二：

[ 37%] Built target IlmImf
[ 37%] Built target libprotobuf
C:/Qt/Qt5.14.2/Tools/mingw730_64/bin/../lib/gcc/x86_64-w64-mingw32/7.3.0/../../.
./../x86_64-w64-mingw32/bin/ld.exe: i386 architecture of input file `CMakeFiles\
opencv_core.dir/objects.a(vs_version.rc.obj)' is incompatible with i386:x86-64 o
utput
collect2.exe: error: ld returned 1 exit status
mingw32-make[2]: *** [modules\core\CMakeFiles\opencv_core.dir\build.make:1630: b
in/libopencv_core453d.dll] Error 1
mingw32-make[1]: *** [CMakeFiles\Makefile2:1749: modules/core/CMakeFiles/opencv_
core.dir/all] Error 2
mingw32-make: *** [Makefile:165: all] Error 2

解决方法：

Problem is somewhere here (added for 3.3.0 release). Like @mshabunin said take a look on CMAKE_RC_COMPILER variable.
Or try using OPENCV_VS_VERSIONINFO_SKIP=1 CMake option.

cmake里面手动添加：OPENCV_VS_VERSIONINFO_SKIP

cmake界面按钮： add Entry --->>> BOOL --->>> OPENCV_VS_VERSIONINFO_SKIP 打钩
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原文链接：https://blog.csdn.net/friendan/article/details/120318772