+# If you are compiling this for a nonseparate I/D machine,
+# you must:
+# change the definitions of LDFLAGS, CFLAGS, LIBES,
+# SIGRETROSRC, and SIGRETROOBJ
+# make Mail40 rather than Mail
+#
+# Mail is too large to fit on a nonseparate I/D machine without
+# text overlays.
+#
+# If you do not have a vfork system call or do not support
+# job control, you must change the definition of OPTIONS.
+#
+
+OPTIONS= -DV7 -DVMUNIX # vfork and job control
+#OPTIONS= -DV7 # no vfork or no job control
+
+LDFLAGS= -i # for separate I/D machines
+#LDFLAGS= -n # for nonseparate I/D machines