-# double-slash-root.m4 serial 3 -*- Autoconf -*-
-dnl Copyright (C) 2006, 2008 Free Software Foundation, Inc.
+# double-slash-root.m4 serial 4 -*- Autoconf -*-
+dnl Copyright (C) 2006, 2008-2011 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_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
+ # 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]" = "$[4]" && wc //dev/null >/dev/null 2>&1; then
- gl_cv_double_slash_root=no
- else
- gl_cv_double_slash_root=yes
- fi
+ set x `ls -di / // 2>/dev/null`
+ if test "$[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,
+ AC_DEFINE([DOUBLE_SLASH_IS_DISTINCT_ROOT], [1],
[Define to 1 if // is a file system root distinct from /.])
fi
])