AC_CHECK_HEADERS([X11/extensions/xf86vmode.h], [], [], [#include <X11/Xlib.h>])
AC_CHECK_HEADERS([X11/extensions/xf86vmode.h], [], [], [#include <X11/Xlib.h>])
if test "x$enable_debug" = xyes; then
AC_DEFINE([_DEBUG], [1], [Define to 1 if you want to include debugging code.])
fi
if test "x$enable_debug" = xyes; then
AC_DEFINE([_DEBUG], [1], [Define to 1 if you want to include debugging code.])
fi