--- mstools/samples/comm/makefile	2018/08/09 18:20:59	1.1
+++ mstools/samples/comm/makefile	2018/08/09 18:24:32	1.1.1.3
@@ -1,30 +1,48 @@
 # Windows-32 TTY Example
-# Copyright (c) 1991 by Microsoft Corporation
-
-# inference rules
+# Copyright (c) 1992 by Microsoft Corporation
 
+!IF "$(CPU)" != ""
+OS=NT
+ENV=WIN32
+!ELSE
+OS=DOS
+ENV=WIN16
+!ENDIF
+
+# If this generates the error "Unable to open DOSWIN16.MAK" then you need
+# to put a copy of that file (from the GENERIC sample code directory)
+# into a directory on your INCLUDE environment variable
+
+!include <$(OS)$(ENV).MAK>
+
+proj = TTY
+
+all: $(proj).exe
+
+# Update the resource if necessary
+$(proj).res: $(proj).rc resource.h
+    rc -r -fo $(proj).res $(cvars) $(proj).rc
+!IFDEF CPUTYPE
+    cvtres -$(CPU) $(proj).res -o $(proj).rbj
+!ENDIF
+
+
+# Update the object file if necessary
+$(proj).obj: $(proj).c $(proj).h
+    $(cc) $(cdebug) $(cflags) $(cvars) $(proj).c
+
+# Since the link line has some severe differences depending on what
+# platform we are running on, we need to special case this so that
+# we execute the correct commands:
+
+$(proj).exe: $(proj).obj $(proj).res $(proj).def
+!IFDEF CPUTYPE
+# This is for Windows NT:
+    $(link) $(linkdebug) $(guiflags) $(proj).obj  $(guilibs) VERSION.LIB $(proj).rbj -out:$(proj).exe
+!ENDIF
+!IFNDEF CPUTYPE
+# This is for Windows DOS:
+    $(link) $(guiflags) $(proj).obj $(guilibs) $(proj).DEF
+    rc $(proj).res
+!ENDIF
 !include  <ntwin32.mak>
-
-.c.obj:
-        $(cc) $(cflags) $(cvars) $*.c >$*.err
-
-EXEOBJECTS =   tty.obj
-
-all:           tty.exe
-
-clean:
-               del *.obj
-               del *.map
-
-tty.h:         resource.h version.h
-
-tty.obj:       tty.c tty.h
-
-tty.res:       tty.rc tty.ico tty.bmp resource.h
-               rc -r -dWIN32 -fo res.tmp tty.rc
-               cvtres -$(CPU) res.tmp -o tty.res
-               del res.tmp
-
-tty.exe:       $(EXEOBJECTS) tty.res tty.def
-	       $(cvtobj) $(cvtdebug) *.obj
-               $(link) $(guiflags) -out:tty.exe tty.obj tty.res $(guilibs)