1 # printf-posix.m4 serial 3 (gettext-0.17)
2 dnl Copyright (C) 2003, 2007 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
8 dnl Test whether the printf() function supports POSIX/XSI format strings with
11 AC_DEFUN([gt_PRINTF_POSIX],
13 AC_REQUIRE([AC_PROG_CC])
14 AC_CACHE_CHECK([whether printf() supports POSIX/XSI format strings],
15 gt_cv_func_printf_posix,
20 /* The string "%2$d %1$d", with dollar characters protected from the shell's
21 dollar expansion (possibly an autoconf bug). */
22 static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
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,
30 AC_EGREP_CPP(notposix, [
31 #if defined __NetBSD__ || defined __BEOS__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__
34 ], gt_cv_func_printf_posix="guessing no",
35 gt_cv_func_printf_posix="guessing yes")
38 case $gt_cv_func_printf_posix in
40 AC_DEFINE(HAVE_POSIX_PRINTF, 1,
41 [Define if your printf() function supports format strings with positions.])