AC_DEFUN(RFX_CHECK_MING,
[
AC_CANONICAL_HOST
AC_EXEEXT

AC_MSG_CHECKING([for target system])
CYGWIN=
MINGW=
case $host_os in
    *cygwin* ) CYGWIN=yes;;
    *mingw* ) MINGW=yes;;
esac

AR=ar
if test "x$CXX" == "xi586-mingw32msvc-g++"; then
#fix for the debian distribution of mingw
    if test -x "/usr/i586-mingw32msvc/bin/ar";then
	AR="/usr/i586-mingw32msvc/bin/ar"
    fi
    if test -x "/usr/i586-mingw32msvc/bin/ranlib";then
	RANLIB="/usr/i586-mingw32msvc/bin/ranlib"
    fi
fi
AC_SUBST(AR)

dnl Checks for system services

if test "x${CYGWIN}" = "xyes"; then
    AC_DEFINE_UNQUOTED(CYGWIN, 1)
    AC_MSG_RESULT(cygwin)
else
    if test "x${MINGW}" = "xyes"; then
	AC_DEFINE_UNQUOTED(MINGW, 1)
	WIN32=1
	AC_DEFINE_UNQUOTED(WIN32, 1)
	LIBS="$LIBS -lws2_32"
	AC_MSG_RESULT(mingw)
    else
	LINUX=1
	export LINUX
	AC_DEFINE_UNQUOTED(LINUX, 1)
	AC_MSG_RESULT()
    fi
fi
])