debian12 利用mingW-w64为Windows编译opencv

1,先装cmake,git

sudo apt install cmake git

2,下载opencv源码

git clone https://gitcode.com/gh_mirrors/opencv31/opencv.git

3,修改CMakeLists.txt以使用mingW-w64

在文件开始加入一下内容：

set(CMAKE_SYSTEM_NAME Windows)

set(CMAKE_SYSTEM_PROCESSOR x86_64)

set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc-posix)

set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++-posix)

set(CMAKE_CXX_STANDARD 11)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

4,开始编译

mkdir build

cd build

cmake ..

make