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/*
* have_const - Determine if we want or can support ansi const
*
* Copyright (C) 1999 Landon Curt Noll
*
* Calc is open software; you can redistribute it and/or modify it under
* the terms of the version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* Calc is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
* Public License for more details.
*
* A copy of version 2.1 of the GNU Lesser General Public License is
* distributed with calc under the filename COPYING-LGPL. You should have
* received a copy with calc; if not, write to Free Software Foundation, Inc.
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* @(#) $Revision: 29.2 $
* @(#) $Id: have_const.c,v 29.2 2000/06/07 14:02:13 chongo Exp $
* @(#) $Source: /usr/local/src/cmd/calc/RCS/have_const.c,v $
*
* Under source code control: 1995/04/22 13:18:44
* File existed as early as: 1995
*
* chongo <was here> /\oo/\ http://www.isthe.com/chongo/
* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
*/
/*
* usage:
* have_const
*
* Not all compilers support const, so this may not compile on your system.
*
* This prog outputs several defines:
*
* HAVE_CONST
* defined ==> ok to use const
* undefined ==> do not use const
*
* CONST
* const ==> use const
* (nothing) ==> const not used
*/
#include <stdio.h>
int
main(void)
{
#if defined(HAVE_NO_CONST)
printf("#undef HAVE_CONST /* no */\n");
printf("#undef CONST\n");
printf("#define CONST /* no */\n");
#else /* HAVE_NO_CONST */
const char * const str = "const";
printf("#define HAVE_CONST /* yes */\n");
printf("#undef CONST\n");
printf("#define CONST %s /* yes */\n", str);
#endif /* HAVE_NO_CONST */
/* exit(0); */
return 0;
}
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