1# printf-posix.m4 serial 2 (gettext-0.13.1)
2dnl Copyright (C) 2003 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.
8dnl Test whether the printf() function supports POSIX/XSI format strings with
9dnl positions.
10
11AC_DEFUN([gt_PRINTF_POSIX],
12[
13  AC_REQUIRE([AC_PROG_CC])
14  AC_CACHE_CHECK([whether printf() supports POSIX/XSI format strings],
15    gt_cv_func_printf_posix,
16    [
17      AC_TRY_RUN([
18#include <stdio.h>
19#include <string.h>
20/* The string "%2$d %1$d", with dollar characters protected from the shell's
21   dollar expansion (possibly an autoconf bug).  */
22static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
23static char buf[100];
24int main ()
25{
26  sprintf (buf, format, 33, 55);
27  return (strcmp (buf, "55 33") != 0);
28}], gt_cv_func_printf_posix=yes, gt_cv_func_printf_posix=no,
29      [
30        AC_EGREP_CPP(notposix, [
31#if defined __NetBSD__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__
32  notposix
33#endif
34        ], gt_cv_func_printf_posix="guessing no",
35           gt_cv_func_printf_posix="guessing yes")
36      ])
37    ])
38  case $gt_cv_func_printf_posix in
39    *yes)
40      AC_DEFINE(HAVE_POSIX_PRINTF, 1,
41        [Define if your printf() function supports format strings with positions.])
42      ;;
43  esac
44])
45