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Initial revision

    1: # printf-posix.m4 serial 2 (gettext-0.13.1)
    2: dnl Copyright (C) 2003 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.
    6: 
    7: dnl From Bruno Haible.
    8: dnl Test whether the printf() function supports POSIX/XSI format strings with
    9: dnl positions.
   10: 
   11: AC_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).  */
   22: static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
   23: static char buf[100];
   24: int 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: ])