Move gnulib to top level

This patch moves the gdb/gnulib subdirectory to the top level.

It adjusts the top-level build system to build gnulib when necessary,
and changes gdb to use this.  However, gdbserver still builds its own
copy of gnulib, just from the new source location.

A small hack was needed to ensure that gnulib is only built when gdb
is enabled.  The Makefile only provides an ordering -- the directory
must be mentioned in configdirs to actually be compiled at all.

Most of the patch is just a "git mv" of gnulib, though a few minor
path adjustments were needed in some files there.

Tested by the buildbot.

ChangeLog
2019-06-14  Tom Tromey  <tom@tromey.com>

	* MAINTAINERS: Add gnulib.
	* gnulib: New directory, move from gdb/gnulib.
	* configure.ac (host_libs): Add gnulib.
	* configure: Rebuild.
	* Makefile.def (host_modules, dependencies): Add gnulib.
	* Makefile.in: Rebuild.

gdb/ChangeLog
2019-06-14  Tom Tromey  <tom@tromey.com>

	* gnulib: Move directory to top-level.
	* configure.ac: Don't configure gnulib.
	* configure: Rebuild.
	* common/common-defs.h: Use new path to gnulib.
	* Makefile.in (GNULIB_BUILDDIR): Now ../gnulib.
	(GNULIB_H): Remove.
	(INCGNU): Look in new gnulib location.
	(HFILES_NO_SRCDIR): Remove gnulib files.
	(SUBDIR, REQUIRED_SUBDIRS): Remove gnulib.
	(generated_files): Remove GNULIB_H.
	($(LIBGNU), all-lib): Remove targets.
	(distclean): Don't mention GNULIB_BUILDDIR.
	($(GNULIB_BUILDDIR)/Makefile): Remove target.

gdb/gdbserver/ChangeLog
2019-06-14  Tom Tromey  <tom@tromey.com>

	* configure.ac: Use new path to gnulib.
	* configure: Rebuild.
	* Makefile.in (INCGNU, $(GNULIB_BUILDDIR)/Makefile): Use new path
	to gnulib.

gnulib/ChangeLog
2019-06-14  Tom Tromey  <tom@tromey.com>

	* update-gnulib.sh: Adjust paths.
	* Makefile.in: Adjust paths.
	* configure.ac: Adjust paths.  Use ACX_LARGEFILE.
	* configure: Rebuild.

1 files changed, 0 insertions, 54 deletions

diff --git a/gdb/gnulib/import/dirname.h b/gdb/gnulib/import/dirname.h
deleted file mode 100644
index 875b31b..0000000
--- a/gdb/gnulib/import/dirname.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*  Take file names apart into directory and base names.
-
-    Copyright (C) 1998, 2001, 2003-2006, 2009-2016 Free Software Foundation,
-    Inc.
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 3 of the License, or
-    (at your option) any later version.
-
-    This program 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 General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#ifndef DIRNAME_H_
-# define DIRNAME_H_ 1
-
-# include <stdbool.h>
-# include <stddef.h>
-# include "dosname.h"
-
-# ifndef DIRECTORY_SEPARATOR
-#  define DIRECTORY_SEPARATOR '/'
-# endif
-
-# ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
-#  define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
-# endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-# if GNULIB_DIRNAME
-char *base_name (char const *file);
-char *dir_name (char const *file);
-# endif
-
-char *mdir_name (char const *file);
-size_t base_len (char const *file) _GL_ATTRIBUTE_PURE;
-size_t dir_len (char const *file) _GL_ATTRIBUTE_PURE;
-char *last_component (char const *file) _GL_ATTRIBUTE_PURE;
-
-bool strip_trailing_slashes (char *file);
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#endif /* not DIRNAME_H_ */