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, distributed under the terms of the GNU 4 dnl General Public License. As a special exception to the GNU General 5 dnl Public License, this file may be distributed as part of a program 6 dnl that contains a configuration script generated by Autoconf, under 7 dnl the same distribution terms as the rest of that program. 8 9 dnl From Bruno Haible. 10 dnl Test whether the printf() function supports POSIX/XSI format strings with 11 dnl positions. 12 13 AC_DEFUN([gt_PRINTF_POSIX], 14 [ 15 AC_REQUIRE([AC_PROG_CC]) 16 AC_CACHE_CHECK([whether printf() supports POSIX/XSI format strings], 17 gt_cv_func_printf_posix, 18 [ 19 AC_TRY_RUN([ 20 #include <stdio.h> 21 #include <string.h> 22 /* The string "%2$d %1$d", with dollar characters protected from the shell's 23 dollar expansion (possibly an autoconf bug). */ 24 static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' }; 25 static char buf[100]; 26 int main () 27 { 28 sprintf (buf, format, 33, 55); 29 return (strcmp (buf, "55 33") != 0); 30 }], gt_cv_func_printf_posix=yes, gt_cv_func_printf_posix=no, 31 [ 32 AC_EGREP_CPP(notposix, [ 33 #if defined __NetBSD__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__ 34 notposix 35 #endif 36 ], gt_cv_func_printf_posix="guessing no", 37 gt_cv_func_printf_posix="guessing yes") 38 ]) 39 ]) 40 case $gt_cv_func_printf_posix in 41 *yes) 42 AC_DEFINE(HAVE_POSIX_PRINTF, 1, 43 [Define if your printf() function supports format strings with positions.]) 44 ;; 45 esac 46 ]) 47
