set(CMAKE_SYSTEM_NAME Windows)
set(CMAKE_SYSTEM_PROCESSOR x86_64)

set(CMAKE_SYSROOT /usr/x86_64-w64-mingw32/)
set(ENV{PKG_CONFIG} /usr/x86_64-w64-mingw32/bin/pkg-config)

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