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FYI: Declare YACC & YFLAGS precious in m4/bison.m4

From: Derek Price
Subject: FYI: Declare YACC & YFLAGS precious in m4/bison.m4
Date: Thu, 16 Jun 2005 08:58:51 -0400
User-agent: Mozilla Thunderbird 1.0.2 (Windows/20050317)

This brings bison.m4 closer to what CVS is using.  Bruno approved the
YFLAGS change way back here:
and no one objected to my YACC correction in the following message.

2005-06-15  Derek Price  <address@hidden>

        * bison.m4: Declare YACC & YFLAGS precious.


Index: m4/bison.m4
RCS file: /cvsroot/gnulib/gnulib/m4/bison.m4,v
retrieving revision 1.6
diff -u -p -r1.6 bison.m4
--- m4/bison.m4 2 Jun 2005 17:01:41 -0000       1.6
+++ m4/bison.m4 16 Jun 2005 12:53:29 -0000
@@ -9,5 +9,11 @@ AC_DEFUN([gl_BISON],
   # getdate.y works with bison only.
   : ${YACC='bison -y'}
+[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
+[YFLAGS contains the list arguments that will be passed by default to Bison.
+This script will default YFLAGS to the empty string to avoid a default value of
+`-d' given by some make applications.])dnl

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