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73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* have_const - Determine if we want or can support ansi const
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*
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* Copyright (C) 1999 Landon Curt Noll
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*
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* Calc is open software; you can redistribute it and/or modify it under
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* the terms of the version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* Calc is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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* Public License for more details.
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*
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* A copy of version 2.1 of the GNU Lesser General Public License is
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* distributed with calc under the filename COPYING-LGPL. You should have
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* received a copy with calc; if not, write to Free Software Foundation, Inc.
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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*
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* @(#) $Revision: 29.1 $
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* @(#) $Id: have_const.c,v 29.1 1999/12/14 09:15:38 chongo Exp $
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* @(#) $Source: /usr/local/src/cmd/calc/RCS/have_const.c,v $
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*
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* Under source code control: 1995/04/22 13:18:44
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* File existed as early as: 1995
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*
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* chongo <was here> /\oo/\ http://reality.sgi.com/chongo/
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* Share and enjoy! :-) http://reality.sgi.com/chongo/tech/comp/calc/
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*/
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/*
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* usage:
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* have_const
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*
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* Not all compilers support const, so this may not compile on your system.
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*
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* This prog outputs several defines:
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*
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* HAVE_CONST
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* defined ==> ok to use const
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* undefined ==> do not use const
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*
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* CONST
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* const ==> use const
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* (nothing) ==> const not used
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*/
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#include <stdio.h>
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int
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main(void)
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{
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#if defined(HAVE_NO_CONST)
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printf("#undef HAVE_CONST /* no */\n");
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printf("#undef CONST\n");
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printf("#define CONST /* no */\n");
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#else /* HAVE_NO_CONST */
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const char * const str = "const";
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printf("#define HAVE_CONST /* yes */\n");
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printf("#undef CONST\n");
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printf("#define CONST %s /* yes */\n", str);
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#endif /* HAVE_NO_CONST */
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/* exit(0); */
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return 0;
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}
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