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Release calc version 2.11.0t2

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Landon Curt Noll
1999-09-24 17:14:22 -07:00
parent bad4535616
commit 4b98d5ff0e
12 changed files with 416 additions and 47 deletions
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123
calc_errno.c Normal file
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/*
* errno - Determine how to declare errno, sys_errlist and sys_nerr
*
* On most machines: errno sys_errlist and sys_nerr are declared
* by either <stdio.h> and/or <errno.h>. But some systems declare
* them somewhere else or do not declare them at all!
*
* If the system were doing a proper job in headers, this should declare them:
*
* #include <stdio.h>
* #include <errno.h>
*
* But one some systems one must explicitly declare them as:
*
* extern int errno;
* extern const char *const sys_errlist[];
* extern int sys_nerr;
*
* and on some old systems they must be explicitly and incorrectly declared as:
*
* extern int errno;
* extern char *sys_errlist[];
* extern int sys_nerr;
*
* The purpose of this utility is try and find the right way to declare
* them and to output the middle of a header file called calc_errno.h.
*/
/*
* Copyright (c) 1999 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 /\../\
*/
#include <stdio.h>
#if defined(TRY_ERRNO_NO_DECL)
# include <errno.h>
#endif /* TRY_ERRNO_NO_DECL */
int
main(void)
{
#if defined(TRY_ERRNO_NO_DECL)
printf("/*\n");
printf(" * The following comments were produced by calc_errno\n");
printf(" * in an effort to see if these values were correctly\n");
printf(" * declared when calc_errno.c was compiled.\n");
printf(" */\n\n");
printf("/* Initially errno is %d */\n", errno);
printf("/* There are %d entries in sys_errlist[] */\n", sys_nerr);
printf("/* The 2nd sys_errlist entry is \"%s\" */\n\n", sys_errlist[1]);
printf("/*\n");
printf(" * Based on the above, calc_errno now knows\n");
printf(" * how to declare errno and friends.\n");
printf(" */\n\n");
printf("#include <stdio.h>\n");
printf("#include <errno.h>\n");
#elif defined(TRY_ERRNO_OLD_DECL)
extern int errno; /* last system error */
extern char *sys_errlist[]; /* system error messages */
extern int sys_nerr; /* number of system errors*/
printf("/*\n");
printf(" * The following comments were produced by calc_errno\n");
printf(" * in an effort to see if these values were correctly\n");
printf(" * declared when calc_errno.c was compiled.\n");
printf(" */\n\n");
printf("/* Initially errno is %d */\n", errno);
printf("/* There are %d entries in sys_errlist[] */\n", sys_nerr);
printf("/* The 2nd sys_errlist entry is \"%s\" */\n\n", sys_errlist[1]);
printf("/*\n");
printf(" * Based on the above, calc_errno now knows\n");
printf(" * how to declare errno and friends.\n");
printf(" */\n\n");
printf("extern int errno;\t\t/* last system error */\n");
printf("extern char *sys_errlist[];\t"
"/* system error messages */\n");
printf("extern int sys_nerr;\t\t/* number of system errors*/\n");
#else /* assume defined(TRY_ERRNO_STD_DECL) */
extern int errno; /* last system error */
extern const char *const sys_errlist[]; /* system error messages */
extern int sys_nerr; /* number of system errors*/
printf("/*\n");
printf(" * The following comments were produced by calc_errno\n");
printf(" * in an effort to see if these values were correctly\n");
printf(" * declared when calc_errno.c was compiled.\n");
printf(" */\n\n");
printf("/* Initially errno is %d */\n", errno);
printf("/* There are %d entries in sys_errlist[] */\n", sys_nerr);
printf("/* The 2nd sys_errlist entry is \"%s\" */\n\n", sys_errlist[1]);
printf("/*\n");
printf(" * Based on the above, calc_errno now knows\n");
printf(" * how to declare errno and friends.\n");
printf(" */\n\n");
printf("extern int errno;\t\t\t/* last system error */\n");
printf("extern const char *const sys_errlist[];\t"
"/* system error messages */\n");
printf("extern int sys_nerr;\t\t\t/* number of system errors*/\n");
#endif
/* exit(0); */
return 0;
}