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73 lines
3.5 KiB
73 lines
3.5 KiB
4 months ago
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# This file is part of Autoconf. -*- Autoconf -*-
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# Checking for functions.
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# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software
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# Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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#
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# As a special exception, the Free Software Foundation gives unlimited
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# permission to copy, distribute and modify the configure scripts that
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# are the output of Autoconf. You need not follow the terms of the GNU
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# General Public License when using or distributing such scripts, even
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# though portions of the text of Autoconf appear in them. The GNU
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# General Public License (GPL) does govern all other use of the material
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# that constitutes the Autoconf program.
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#
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# Certain portions of the Autoconf source text are designed to be copied
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# (in certain cases, depending on the input) into the output of
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# Autoconf. We call these the "data" portions. The rest of the Autoconf
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# source text consists of comments plus executable code that decides which
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# of the data portions to output in any given case. We call these
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# comments and executable code the "non-data" portions. Autoconf never
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# copies any of the non-data portions into its output.
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#
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# This special exception to the GPL applies to versions of Autoconf
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# released by the Free Software Foundation. When you make and
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# distribute a modified version of Autoconf, you may extend this special
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# exception to the GPL to apply to your modified version as well, *unless*
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# your modified version has the potential to copy into its output some
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# of the text that was the non-data portion of the version that you started
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# with. (In other words, unless your change moves or copies text from
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# the non-data portions to the data portions.) If your modification has
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# such potential, you must delete any notice of this special exception
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# to the GPL from your modified version.
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#
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# Written by David MacKenzie, with help from
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# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
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# Roland McGrath, Noah Friedman, david d zuhn, and many others.
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# AC_FUNC_FSEEKO
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# --------------
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AN_FUNCTION([ftello], [AC_FUNC_FSEEKO])
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AN_FUNCTION([fseeko], [AC_FUNC_FSEEKO])
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AC_DEFUN([AC_FUNC_FSEEKO],
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[_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1,
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[ac_cv_sys_largefile_source],
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[Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2).],
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[[#include <sys/types.h> /* for off_t */
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#include <stdio.h>]],
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[[int (*fp) (FILE *, off_t, int) = fseeko;
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return fseeko (stdin, 0, 0) && fp (stdin, 0, 0);]])
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# We used to try defining _XOPEN_SOURCE=500 too, to work around a bug
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# in glibc 2.1.3, but that breaks too many other things.
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# If you want fseeko and ftello with glibc, upgrade to a fixed glibc.
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if test $ac_cv_sys_largefile_source != unknown; then
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AC_DEFINE(HAVE_FSEEKO, 1,
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[Define to 1 if fseeko (and presumably ftello) exists and is declared.])
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fi
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])# AC_FUNC_FSEEKO
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