https://sourceforge.net/projects/mingw/
g++ main.cpp -o main.exe
or Run: exemake.bat
g++ main.cpp -o main.dll
or Run: dllmake.bat
Run: runmain.bat
g++ -m64 -fpic -Wall -shared backend.cc -o backend.dll
https://www.msys2.org/
pacman -Syu
pacman -S mingw-w64-ucrt-x86_64-gcc
pacman -S mingw-w64-x86_64-toolchain
cl /LD backend.cpp /link /out:backend.dll