SET(CMAKE_SYSTEM_NAME Windows)
SET(CMAKE_CROSSCOMPILING 1)
SET(CMAKE_C_COMPILER   /usr/bin/x86_64-w64-mingw32-gcc-posix)
SET(CMAKE_CXX_COMPILER /usr/bin/x86_64-w64-mingw32-g++-posix)
SET(CMAKE_LINKER /usr/bin/x86_64-w64-mingw32-ld-posix)
set(CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES /usr/lib/gcc/x86_64-w64-mingw32/8.3-posix)