grub2/m4/printf-posix.m4
Colin Watson 35b909062e gnulib: Upgrade Gnulib and switch to bootstrap tool
Upgrade Gnulib files to 20190105.

It's much easier to maintain GRUB's use of portability support files
from Gnulib when the process is automatic and driven by a single
configuration file, rather than by maintainers occasionally running
gnulib-tool and committing the result.  Removing these
automatically-copied files from revision control also removes the
temptation to hack the output in ways that are difficult for future
maintainers to follow.  Gnulib includes a "bootstrap" program which is
designed for this.

The canonical way to bootstrap GRUB from revision control is now
"./bootstrap", but "./autogen.sh" is still useful if you just want to
generate the GRUB-specific parts of the build system.

GRUB now requires Autoconf >= 2.63 and Automake >= 1.11, in line with
Gnulib.

Gnulib source code is now placed in grub-core/lib/gnulib/ (which should
not be edited directly), and GRUB's patches are in
grub-core/lib/gnulib-patches/.  I've added a few notes to the developer
manual on how to maintain this.

Signed-off-by: Colin Watson <cjwatson@ubuntu.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2019-03-05 10:48:12 +01:00

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# 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
])