* bison.m4: Note that precious decls of YACC & YFLAGS will be

[gnulib.git] / m4 / bison.m4

diff --git a/m4/bison.m4 b/m4/bison.m4
index bb69123..91039b1 100644 (file)
--- a/m4/bison.m4
+++ b/m4/bison.m4
@@ -1,6 +1,6 @@
 #serial 4
 
-# Copyright (C) 2002 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2005 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -9,6 +9,11 @@ AC_DEFUN([gl_BISON],
 [
   # getdate.y works with bison only.
   : ${YACC='bison -y'}
+dnl
+dnl Declaring YACC & YFLAGS precious will not be necessary after GNULIB
+dnl requires an Autoconf greater than 2.59c, but it will probably still be
+dnl useful to override the description of YACC in the --help output, re
+dnl getdate.y assuming `bison -y'.
   AC_ARG_VAR(YACC,
 [The `Yet Another C Compiler' implementation to use.  Defaults to `bison -y'.
 Values other than `bison -y' will most likely break on most systems.])dnl