#serial 1 -*- autoconf -*-
dnl Copyright (C) 2006 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.
AC_DEFUN([gl_DOUBLE_SLASH_ROOT],
[
AC_REQUIRE([AC_CANONICAL_HOST])
AC_CACHE_CHECK([whether // is distinct from /], [ac_cv_double_slash_root],
[ if test x"$cross_compiling" = xyes ; then
# When cross-compiling, there is no way to tell whether // is special
# short of a list of hosts. However, the only known hosts to date
# that have a distinct // are Apollo DomainOS (too old to port to)
# and Cygwin. If anyone knows of another system for which // has
# special semantics and is distinct from /, please report it to
# <bug-coreutils@gnu.org>.
case $host in
*-cygwin)
ac_cv_double_slash_root=yes ;;
*)
# Be optimistic and assume that / and // are the same when we
# don't know.
ac_cv_double_slash_root='unknown, assuming no' ;;
esac
else
set x `ls -di / //`
if test $[2] = $[4]; then
ac_cv_double_slash_root=no
else
ac_cv_double_slash_root=yes
fi
fi])
if test x"$ac_cv_double_slash_root" = xyes; then
ac_double_slash_root=1
else
ac_double_slash_root=0
fi
AC_DEFINE_UNQUOTED([DOUBLE_SLASH_IS_DISTINCT_ROOT],
$ac_double_slash_root,
[Define to 1 if // is a file system root distinct from /.])
])
