set(CMAKE_SYSTEM_NAME Windows)
set(TOOLCHAIN_PREFIX x86_64-w64-mingw32)

set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}-gcc)
set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}-g++)
set(CMAKE_AR ${TOOLCHAIN_PREFIX}-gcc-ar)
set(CMAKE_RANLIB ${TOOLCHAIN_PREFIX}-gcc-ranlib)
set(CMAKE_RC_COMPILER ${TOOLCHAIN_PREFIX}-windres)
set(CMAKE_RC_FLAGS -DGCC_WINDRES)

set(CMAKE_FIND_ROOT_PATH "/usr/${TOOLCHAIN_PREFIX};/usr/lib/gcc/${TOOLCHAIN_PREFIX}/;${CMAKE_CURRENT_BINARY_DIR}/deps")

# modify default behavior of FIND_XXX() commands to
# search for headers/libs in the target environment and
# search for programs in the build host environment
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

# Set Wine as the emulator if we're not running under Windows
if (NOT "${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "Windows")
    find_program (WINE wine REQUIRED)

    set (CMAKE_CROSSCOMPILING_EMULATOR "${WINE}")
endif ()

# Export the chosen compiler via CXX and CC, because it's entirely possible
# one of child build scripts will call out to something that relies on these
# to discover the compiler (or will otherwise choose the wrong one).
set ($ENV{CXX} "${CMAKE_CXX_COMPILER}")
set ($ENV{CC} "${CMAKE_C_COMPILER}")