CMake Error at cmake/OpenCVCompilerOptimizations.cmake:647 (message):   Compiler doesn't support baseline optimization flags: Call Stack (most recent call first):   cmake/OpenCVCompilerOptions.cmake:344 (ocv_compiler_optimization_options)   CMakeList

解决方法：

打开这个文件，按照报错的提示：找到第344行，将其注释掉