Files
calc/have_const.c
2017-05-21 15:38:25 -07:00

59 lines
1.7 KiB
C

/*
* have_const - Determine if we want or can support ansi const
*
* 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
*/
/*
* Copyright (c) 1995 by Landon Curt Noll. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright, this permission notice and text
* this comment, and the disclaimer below appear in all of the following:
*
* supporting documentation
* source copies
* source works derived from this source
* binaries derived from this source or from derived source
*
* LANDON CURT NOLL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
* EVENT SHALL LANDON CURT NOLL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* chongo was here /\../\
*/
MAIN
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);
}