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47 lines
1.6 KiB
Plaintext
47 lines
1.6 KiB
Plaintext
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# printf-posix.m4 serial 2 (gettext-0.13.1)
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dnl Copyright (C) 2003 Free Software Foundation, Inc.
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dnl This file is free software, distributed under the terms of the GNU
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dnl General Public License. As a special exception to the GNU General
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dnl Public License, this file may be distributed as part of a program
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dnl that contains a configuration script generated by Autoconf, under
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dnl the same distribution terms as the rest of that program.
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dnl From Bruno Haible.
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dnl Test whether the printf() function supports POSIX/XSI format strings with
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dnl positions.
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AC_DEFUN([gt_PRINTF_POSIX],
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[
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AC_REQUIRE([AC_PROG_CC])
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AC_CACHE_CHECK([whether printf() supports POSIX/XSI format strings],
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gt_cv_func_printf_posix,
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[
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AC_TRY_RUN([
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#include <stdio.h>
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#include <string.h>
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/* The string "%2$d %1$d", with dollar characters protected from the shell's
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dollar expansion (possibly an autoconf bug). */
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static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
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static char buf[100];
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int main ()
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{
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sprintf (buf, format, 33, 55);
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return (strcmp (buf, "55 33") != 0);
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}], gt_cv_func_printf_posix=yes, gt_cv_func_printf_posix=no,
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[
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AC_EGREP_CPP(notposix, [
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#if defined __NetBSD__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__
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notposix
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#endif
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], gt_cv_func_printf_posix="guessing no",
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gt_cv_func_printf_posix="guessing yes")
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])
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])
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case $gt_cv_func_printf_posix in
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*yes)
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AC_DEFINE(HAVE_POSIX_PRINTF, 1,
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[Define if your printf() function supports format strings with positions.])
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;;
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esac
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])
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