2 A primitive Perl script to run benches.  Currently its only bench is
 
   3 the usual calculator: it has a lightweight processing part (but not
 
   4 null), so it is really emphasizing the cost of the whole parsing
 
   5 (including scanning and I/O).
 
   7 Set the envvars BISON and CC to the programs and flags you want to
 
   8 use.  They default to bison and gcc.  To run a non-installed bison
 
   9 from a tarball built in _build, I suggest the following.
 
  11      BISON=_build/tests/bison CC='gcc -O2' ./bench.pl
 
  13 (The _build/tests/bison wrapper makes sure that _build/src/bison will
 
  14 use the tarballs' skeletons, not those already installed as a
 
  15 straightforward use of _build/src/bison would.)
 
  19 Copyright (C) 2006, 2009-2015 Free Software Foundation, Inc.
 
  21 This file is part of Bison, the GNU Compiler Compiler.
 
  23 This program is free software: you can redistribute it and/or modify
 
  24 it under the terms of the GNU General Public License as published by
 
  25 the Free Software Foundation, either version 3 of the License, or
 
  26 (at your option) any later version.
 
  28 This program is distributed in the hope that it will be useful,
 
  29 but WITHOUT ANY WARRANTY; without even the implied warranty of
 
  30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
  31 GNU General Public License for more details.
 
  33 You should have received a copy of the GNU General Public License
 
  34 along with this program.  If not, see <http://www.gnu.org/licenses/>.