+# Makefile 4.6 83/07/02
+#
+# The system has two monitoring schemes, utilizing either ``prof''
+# or ``gprof''. DFLMON determines the default profiler; mon.o
+# specifies that ``prof'' is the default, gmon.o specifies that
+# ``gprof'' is the default.
+#
+# Machine dependent routines are located in a subtree which parallels
+# the top directories. This subtree is identified by the machine name.
+#
+# Compatibility routines are kept in directories with a prefixing
+# ``compat'' (so they all sort together).
+#
+# The C run-time startup code is always machine dependent and expected
+# to be located in ${MACHINE}/csu