1# This file is part of Autoconf. -*- Autoconf -*- 2# Checking for functions. 3# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software 4# Foundation, Inc. 5# 6# This program is free software; you can redistribute it and/or modify 7# it under the terms of the GNU General Public License as published by 8# the Free Software Foundation; either version 3, or (at your option) 9# any later version. 10# 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15# 16# You should have received a copy of the GNU General Public License 17# along with this program; if not, write to the Free Software 18# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19# 02110-1301, USA. 20# 21# As a special exception, the Free Software Foundation gives unlimited 22# permission to copy, distribute and modify the configure scripts that 23# are the output of Autoconf. You need not follow the terms of the GNU 24# General Public License when using or distributing such scripts, even 25# though portions of the text of Autoconf appear in them. The GNU 26# General Public License (GPL) does govern all other use of the material 27# that constitutes the Autoconf program. 28# 29# Certain portions of the Autoconf source text are designed to be copied 30# (in certain cases, depending on the input) into the output of 31# Autoconf. We call these the "data" portions. The rest of the Autoconf 32# source text consists of comments plus executable code that decides which 33# of the data portions to output in any given case. We call these 34# comments and executable code the "non-data" portions. Autoconf never 35# copies any of the non-data portions into its output. 36# 37# This special exception to the GPL applies to versions of Autoconf 38# released by the Free Software Foundation. When you make and 39# distribute a modified version of Autoconf, you may extend this special 40# exception to the GPL to apply to your modified version as well, *unless* 41# your modified version has the potential to copy into its output some 42# of the text that was the non-data portion of the version that you started 43# with. (In other words, unless your change moves or copies text from 44# the non-data portions to the data portions.) If your modification has 45# such potential, you must delete any notice of this special exception 46# to the GPL from your modified version. 47# 48# Written by David MacKenzie, with help from 49# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, 50# Roland McGrath, Noah Friedman, david d zuhn, and many others. 51 52# AC_FUNC_FSEEKO 53# -------------- 54AN_FUNCTION([ftello], [AC_FUNC_FSEEKO]) 55AN_FUNCTION([fseeko], [AC_FUNC_FSEEKO]) 56AC_DEFUN([AC_FUNC_FSEEKO], 57[_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1, 58 [ac_cv_sys_largefile_source], 59 [Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2).], 60 [[#include <sys/types.h> /* for off_t */ 61 #include <stdio.h>]], 62 [[int (*fp) (FILE *, off_t, int) = fseeko; 63 return fseeko (stdin, 0, 0) && fp (stdin, 0, 0);]]) 64 65# We used to try defining _XOPEN_SOURCE=500 too, to work around a bug 66# in glibc 2.1.3, but that breaks too many other things. 67# If you want fseeko and ftello with glibc, upgrade to a fixed glibc. 68if test $ac_cv_sys_largefile_source != unknown; then 69 AC_DEFINE(HAVE_FSEEKO, 1, 70 [Define to 1 if fseeko (and presumably ftello) exists and is declared.]) 71fi 72])# AC_FUNC_FSEEKO 73