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annotate m4/printf-posix.m4 @ 17363:5a51fb7777a9

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sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 19 Mar 2013 09:08:47 -0700
parents e542fd46ad6f
children 344018b6e5d7
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1 # printf-posix.m4 serial 6 (gettext-0.18.2)
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2 dnl Copyright (C) 2003, 2007, 2009-2013 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
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4 dnl gives unlimited permission to copy and/or distribute it,
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5 dnl with or without modifications, as long as this notice is preserved.
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6
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7 dnl From Bruno Haible.
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8 dnl Test whether the printf() function supports POSIX/XSI format strings with
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9 dnl positions.
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10
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11 AC_DEFUN([gt_PRINTF_POSIX],
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12 [
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13 AC_REQUIRE([AC_PROG_CC])
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14 AC_CACHE_CHECK([whether printf() supports POSIX/XSI format strings],
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15 gt_cv_func_printf_posix,
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16 [
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17 AC_RUN_IFELSE(
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18 [AC_LANG_SOURCE([[
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19 #include <stdio.h>
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20 #include <string.h>
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21 /* The string "%2$d %1$d", with dollar characters protected from the shell's
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22 dollar expansion (possibly an autoconf bug). */
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23 static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
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24 static char buf[100];
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25 int main ()
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26 {
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27 sprintf (buf, format, 33, 55);
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28 return (strcmp (buf, "55 33") != 0);
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29 }]])],
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30 [gt_cv_func_printf_posix=yes],
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31 [gt_cv_func_printf_posix=no],
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32 [
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33 AC_EGREP_CPP([notposix], [
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34 #if defined __NetBSD__ || defined __BEOS__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__
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35 notposix
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36 #endif
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37 ],
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38 [gt_cv_func_printf_posix="guessing no"],
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39 [gt_cv_func_printf_posix="guessing yes"])
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40 ])
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41 ])
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42 case $gt_cv_func_printf_posix in
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43 *yes)
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44 AC_DEFINE([HAVE_POSIX_PRINTF], [1],
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45 [Define if your printf() function supports format strings with positions.])
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46 ;;
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47 esac
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48 ])