| # printf-posix.m4 serial 6 (gettext-0.18.2) |
| dnl Copyright (C) 2003, 2007, 2009-2013 Free Software Foundation, Inc. |
| dnl This file is free software; the Free Software Foundation |
| dnl gives unlimited permission to copy and/or distribute it, |
| dnl with or without modifications, as long as this notice is preserved. |
| |
| dnl From Bruno Haible. |
| dnl Test whether the printf() function supports POSIX/XSI format strings with |
| dnl positions. |
| |
| AC_DEFUN([gt_PRINTF_POSIX], |
| [ |
| AC_REQUIRE([AC_PROG_CC]) |
| AC_CACHE_CHECK([whether printf() supports POSIX/XSI format strings], |
| gt_cv_func_printf_posix, |
| [ |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <stdio.h> |
| #include <string.h> |
| /* The string "%2$d %1$d", with dollar characters protected from the shell's |
| dollar expansion (possibly an autoconf bug). */ |
| static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' }; |
| static char buf[100]; |
| int main () |
| { |
| sprintf (buf, format, 33, 55); |
| return (strcmp (buf, "55 33") != 0); |
| }]])], |
| [gt_cv_func_printf_posix=yes], |
| [gt_cv_func_printf_posix=no], |
| [ |
| AC_EGREP_CPP([notposix], [ |
| #if defined __NetBSD__ || defined __BEOS__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__ |
| notposix |
| #endif |
| ], |
| [gt_cv_func_printf_posix="guessing no"], |
| [gt_cv_func_printf_posix="guessing yes"]) |
| ]) |
| ]) |
| case $gt_cv_func_printf_posix in |
| *yes) |
| AC_DEFINE([HAVE_POSIX_PRINTF], [1], |
| [Define if your printf() function supports format strings with positions.]) |
| ;; |
| esac |
| ]) |