copyright notice on Makefile.am; document some -D switches (are they still usable?)

diff --git a/Makefile.am b/Makefile.am
index 0eae17c6bca7a6b776281ef836cb7cdc2368d2fd..1419c665e192d6b526e27d85c212694bf12eab88 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,3 +1,38 @@
+# This file is part of flex.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+
+# Neither the name of the University nor the names of its contributors
+# may be used to endorse or promote products derived from this software
+# without specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE.
+
+# Notes on building:
+
+# Possible values for DEFS:
+#
+# By default, flex generates 8-bit scanners when using table compression,
+# and 7-bit scanners when using uncompressed tables (-f or -F options).
+# For flex to always generate 8-bit scanners, add "-DDEFAULT_CSIZE=256"
+# to DEFS.
+#
+# For Vax/VMS, add "-DVMS" to DEFS.
+#
+# For MS-DOS, add "-DMS_DOS" to DEFS.  See the directory MISC/MSDOS for
+# additional info.
+
 AUTOMAKE_OPTIONS = \
        gnits \
        check-news \