+if test "${HAVE_CARBON}" = yes; then
+ window_system=mac
+fi
+
+case "${window_system}" in
+ x11 )
+ HAVE_X_WINDOWS=yes
+ HAVE_X11=yes
+ case "${with_x_toolkit}" in
+ athena | lucid ) USE_X_TOOLKIT=LUCID ;;
+ motif ) USE_X_TOOLKIT=MOTIF ;;
+ gtk ) with_gtk=yes
+ USE_X_TOOLKIT=none ;;
+ no ) USE_X_TOOLKIT=none ;;
+ * ) USE_X_TOOLKIT=maybe ;;
+ esac
+ ;;
+ mac | none )
+ HAVE_X_WINDOWS=no
+ HAVE_X11=no
+ USE_X_TOOLKIT=none
+ ;;
+esac
+
+### If we're using X11, we should use the X menu package.
+HAVE_MENUS=no
+case ${HAVE_X11} in
+ yes ) HAVE_MENUS=yes ;;
+esac
+
+if test "${opsys}" = "hpux9"; then
+ case "${x_libraries}" in
+ *X11R4* )
+ opsysfile="s/hpux9-x11r4.h"
+ ;;
+ esac
+fi
+
+if test "${opsys}" = "hpux9shr"; then
+ case "${x_libraries}" in
+ *X11R4* )
+ opsysfile="s/hpux9shxr4.h"
+ ;;
+ esac
+fi