+# Note:
+#
+# X_LIBS would more properly be called X_LDFLAGS (it contains the -L args.)
+# X_PRE_LIBS contains extra libraries you have to link against on some systems,
+# and that must come before -lX11. (e.g., -lSM and -lICE.)
+# X_EXTRA_LIBS contains extra libraries needed by X that aren't a part of X.
+# (e.g., -lsocket, -lnsl, etc.)
+#
+XLIBS = $(X_LIBS) $(X_PRE_LIBS) -lX11 -lXext $(X_EXTRA_LIBS)
+XTLIBS = $(X_LIBS) $(X_PRE_LIBS) -lXt -lX11 -lXext $(X_EXTRA_LIBS)