Re: Use of bison

[Mark D. Baushke]

Hi Eric,

Francesco Montorsi on 12/27/2005 11:42 AM wrote:

> PS: I've recently installed SuSE and I've found
> that the configure script of coreutils doesn't
> check for 'bison' presence: on that distro, it
> was missing and it gave me problems later with
> "make". I think adding a check for 'bison' would
> be nice...

For what it may be worth, the CVS project has a
forked copy of the GNULIB bison.m4 which uses
bison-missing until such time as automake-1.10 is
released when it will no longer be an issue.

        -- Mark

--- bison.m4~   Mon Jun 20 08:03:36 2005
+++ bison.m4    Wed Dec 14 01:04:06 2005
@@ -1,14 +1,21 @@
 #serial 4
 
 # 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.
 
 AC_DEFUN([gl_BISON],
-[
+[dnl
+dnl All this cruft, which tries to fail harmlessly when bison is not present,
+dnl will no longer be necessary after we require an Automake release 1.10 or
+dnl later, as those avoid generating .c files from .y when not in maintainer
+dnl mode.  This is currently a fork from the GNULIB version of this file.
+  # expand $ac_aux_dir to an absolute path
+  am_aux_dir=`cd $ac_aux_dir && pwd`
+
   # getdate.y works with bison only.
-  : ${YACC='bison -y'}
+  : ${YACC="\${SHELL} $am_aux_dir/bison-missing --run 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