Remove the bulk of the NaCl port.

The NaCl port has not been actively maintained since before the 2.25
release.  The complementary GCC back-end was never contributed to GCC,
and we are given to understand that the current NaCl SDK has switched
to Clang and therefore cannot be used to build glibc anymore, so we
doubt that the port remains useful.

This commit simply removes the sysdeps/arm/nacl and sysdeps/nacl
directories and the abi-tags entry.

	Remove the NaCl port.
	* abi-tags: Remove .*-.*-nacl.* entry.
	* sysdeps/arm/nacl: Remove directory and contents.
	* sysdeps/nacl: Likewise.

1 files changed, 0 insertions, 56 deletions

diff --git a/sysdeps/nacl/getcwd.c b/sysdeps/nacl/getcwd.c
deleted file mode 100644
index b3cc7a6eb3..0000000000
--- a/sysdeps/nacl/getcwd.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/* Get current working directory.  NaCl version.
-   Copyright (C) 2015-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <unistd.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <nacl-interfaces.h>
-
-/* Get the pathname of the current working directory,
-   and put it in SIZE bytes of BUF.  Returns NULL if the
-   directory couldn't be determined or SIZE was too small.
-   If successful, returns BUF.  In GNU, if BUF is NULL,
-   an array is allocated with `malloc'; the array is SIZE
-   bytes long, unless SIZE <= 0, in which case it is as
-   big as necessary.  */
-char *
-__getcwd (char *buf, size_t size)
-{
-  char *use_buf = buf;
-
-  if (buf == NULL)
-    {
-      if (size == 0)
-        size = PATH_MAX;
-      use_buf = malloc (size);
-      if (__glibc_unlikely (use_buf == NULL))
-        return NULL;
-    }
-
-  int error = __nacl_irt_dev_filename.getcwd (use_buf, size);
-  if (__glibc_unlikely (error))
-    {
-      if (use_buf != buf)
-        free (use_buf);
-      errno = error;
-      return NULL;
-    }
-
-  return use_buf;
-}
-weak_alias (__getcwd, getcwd)