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# -*- Autoconf -*-
# Find where is `file' and what is the option for it to follow the
# links. If no way, use a plain `file'.
#
# Copyright (C) 1995-2000, 2002 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307 USA
# Written by Akim Demaille <akim@freefriends.org>
# serial 5
dnl This is a test to know what is the correct way to get
dnl file following the links
dnl I hope it is robust, but I'm a novice :) Akim Demaille
AC_DEFUN([ad_PROG_FILE_LINK],
[AC_PATH_PROG(file_prog, file)dnl
AC_MSG_CHECKING(for the option for file to follow the links)
AC_CACHE_VAL(ac_cv_prog_file_link_option,[
touch conftestfile
ln -s conftestfile conftestfile1
for file_opt in '' ' -L'
do
res=`eval $file_prog $file_opt conftestfile1 2>&-` || res=symbolic
case $res in
*symbolic*) ;;
*) ac_cv_prog_file_link_option=$file_opt ; break ;;
esac
done
rm -f conftestfile conftestfile1
if test "X$ac_cv_prog_file_link_option" = X; then
ac_cv_prog_file_link_option="no";
fi])dnl
# If no flag were found, default to `file' with no options
case "X$ac_cv_prog_file_link_option" in
X) AC_MSG_RESULT(none required) ;
FILE_LINK=${file_prog} ;;
Xno) AC_MSG_RESULT(no way);
FILE_LINK=${file_prog} ;;
*) AC_MSG_RESULT($ac_cv_prog_file_link_option);
FILE_LINK=${file_prog}${ac_cv_prog_file_link_option} ;;
esac])
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