source: trunk/debathena/third/schroot/m4/intdiv0.m4 @ 24172

Revision 24172, 1.7 KB checked in by broder, 15 years ago (diff)
Import the autogoo generated files in schroot. The packaging doesn't build these itself, so we need to.
RevLine 
[24172]1# intdiv0.m4 serial 1 (gettext-0.11.3)
2dnl Copyright (C) 2002 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7dnl From Bruno Haible.
8
9AC_DEFUN([gt_INTDIV0],
10[
11  AC_REQUIRE([AC_PROG_CC])dnl
12  AC_REQUIRE([AC_CANONICAL_HOST])dnl
13
14  AC_CACHE_CHECK([whether integer division by zero raises SIGFPE],
15    gt_cv_int_divbyzero_sigfpe,
16    [
17      AC_TRY_RUN([
18#include <stdlib.h>
19#include <signal.h>
20
21static void
22#ifdef __cplusplus
23sigfpe_handler (int sig)
24#else
25sigfpe_handler (sig) int sig;
26#endif
27{
28  /* Exit with code 0 if SIGFPE, with code 1 if any other signal.  */
29  exit (sig != SIGFPE);
30}
31
32int x = 1;
33int y = 0;
34int z;
35int nan;
36
37int main ()
38{
39  signal (SIGFPE, sigfpe_handler);
40/* IRIX and AIX (when "xlc -qcheck" is used) yield signal SIGTRAP.  */
41#if (defined (__sgi) || defined (_AIX)) && defined (SIGTRAP)
42  signal (SIGTRAP, sigfpe_handler);
43#endif
44/* Linux/SPARC yields signal SIGILL.  */
45#if defined (__sparc__) && defined (__linux__)
46  signal (SIGILL, sigfpe_handler);
47#endif
48
49  z = x / y;
50  nan = y / y;
51  exit (1);
52}
53], gt_cv_int_divbyzero_sigfpe=yes, gt_cv_int_divbyzero_sigfpe=no,
54        [
55          # Guess based on the CPU.
56          case "$host_cpu" in
57            alpha* | i[34567]86 | m68k | s390*)
58              gt_cv_int_divbyzero_sigfpe="guessing yes";;
59            *)
60              gt_cv_int_divbyzero_sigfpe="guessing no";;
61          esac
62        ])
63    ])
64  case "$gt_cv_int_divbyzero_sigfpe" in
65    *yes) value=1;;
66    *) value=0;;
67  esac
68  AC_DEFINE_UNQUOTED(INTDIV0_RAISES_SIGFPE, $value,
69    [Define if integer division by zero raises signal SIGFPE.])
70])
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