You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
1.6 KiB
38 lines
1.6 KiB
# double-slash-root.m4 serial 4 -*- Autoconf -*- |
|
dnl Copyright (C) 2006, 2008-2017 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 /], [gl_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), |
|
# Cygwin, and z/OS. If anyone knows of another system for which // has |
|
# special semantics and is distinct from /, please report it to |
|
# <bug-gnulib@gnu.org>. |
|
case $host in |
|
*-cygwin | i370-ibm-openedition) |
|
gl_cv_double_slash_root=yes ;; |
|
*) |
|
# Be optimistic and assume that / and // are the same when we |
|
# don't know. |
|
gl_cv_double_slash_root='unknown, assuming no' ;; |
|
esac |
|
else |
|
set x `ls -di / // 2>/dev/null` |
|
if test "$[2]" = "$[4]" && wc //dev/null >/dev/null 2>&1; then |
|
gl_cv_double_slash_root=no |
|
else |
|
gl_cv_double_slash_root=yes |
|
fi |
|
fi]) |
|
if test "$gl_cv_double_slash_root" = yes; then |
|
AC_DEFINE([DOUBLE_SLASH_IS_DISTINCT_ROOT], [1], |
|
[Define to 1 if // is a file system root distinct from /.]) |
|
fi |
|
])
|
|
|