From a398d2c2b5fd6ab0545d8bb019f9a970b2309404 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 21:16:34 +0200 Subject: Adding upstream version 3.6. Signed-off-by: Daniel Baumann --- m4/unlinkdir.m4 | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 m4/unlinkdir.m4 (limited to 'm4/unlinkdir.m4') diff --git a/m4/unlinkdir.m4 b/m4/unlinkdir.m4 new file mode 100644 index 0000000..c3a9cfd --- /dev/null +++ b/m4/unlinkdir.m4 @@ -0,0 +1,32 @@ +# serial 7 + +# Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc. +# +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# Written by Paul Eggert. + +AC_DEFUN([gl_UNLINKDIR], +[ + AC_REQUIRE([AC_CANONICAL_HOST]) + AC_CHECK_HEADERS_ONCE([priv.h]) + + # The Hurd, the Linux kernel, the FreeBSD kernel version 2.2 and later, + # Cygwin, and mingw never let anyone (even root) unlink directories. + # If anyone knows of another system for which unlink can never + # remove a directory, please report it to . + # Unfortunately this is difficult to test for, since it requires root access + # and might create garbage in the file system, + # so the code below simply relies on the kernel name and version number. + case $host_os in + gnu[[0-9]]* | \ + linux-* | linux | \ + freebsd2.2* | freebsd[[3-9]]* | freebsd[[1-9]][[0-9]]* | \ + cygwin | \ + mingw*) + AC_DEFINE([UNLINK_CANNOT_UNLINK_DIR], [1], + [Define to 1 if unlink (dir) cannot possibly succeed.]);; + esac +]) -- cgit v1.2.3