+mdw_LIBS=$LIBS LIBS= mdw_have_xrandr_p=nil
+AC_SEARCH_LIBS([XRRGetScreenInfo], [Xrandr], [mdw_have_xrandr_p=t])
+case $mdw_have_xrandr_p in
+ t)
+ AC_CHECK_HEADERS([X11/extensions/Xrandr.h], [], [mdw_have_xrandr_p=nil])
+ ;;
+esac
+case $mdw_have_xrandr_p in
+ t)
+ XRANDR_LIBS=$LIBS
+ AC_DEFINE([HAVE_XRANDR], [1], [Define if libXrandr is installed.])
+ ;;
+esac
+LIBS=$mdw_LIBS
+AC_SUBST([XRANDR_LIBS])
+