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49 lines
1.5 KiB
Plaintext
49 lines
1.5 KiB
Plaintext
# printf-posix.m4 serial 6 (gettext-0.18.2)
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dnl Copyright (C) 2003, 2007, 2009-2013 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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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_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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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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}]])],
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[gt_cv_func_printf_posix=yes],
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[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 __BEOS__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__
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notposix
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#endif
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],
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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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