build/msys/toolchain-x86_64-w64-mingw32.cmake

SET(CMAKE_SYSTEM_NAME Windows)
SET(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)
SET(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
SET(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
SET(CMAKE_RANLIB x86_64-w64-mingw32-ranlib)
SET(CMAKE_ASM_YASM_COMPILER yasm)