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, 245 insertions, 0 deletions

diff --git a/gnulib/Makefile.in b/gnulib/Makefile.in
new file mode 100644
index 00000000000..c42bb239d34
--- /dev/null
+++ b/gnulib/Makefile.in
@@ -0,0 +1,245 @@
+# Copyright (C) 1989-2019 Free Software Foundation, Inc.
+
+# This file is part of GDB.
+
+# 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/>.
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+host_alias = @host_alias@
+target_alias = @target_alias@
+program_transform_name = @program_transform_name@
+bindir = @bindir@
+libdir = @libdir@
+tooldir = $(libdir)/$(target_alias)
+
+datadir = @datadir@
+localedir = @localedir@
+mandir = @mandir@
+man1dir = $(mandir)/man1
+man2dir = $(mandir)/man2
+man3dir = $(mandir)/man3
+man4dir = $(mandir)/man4
+man5dir = $(mandir)/man5
+man6dir = $(mandir)/man6
+man7dir = $(mandir)/man7
+man8dir = $(mandir)/man8
+man9dir = $(mandir)/man9
+infodir = @infodir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+htmldir = @htmldir@
+pdfdir = @pdfdir@
+includedir = @includedir@
+
+SHELL = @SHELL@
+EXEEXT = @EXEEXT@
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+
+DESTDIR =
+
+AR = @AR@
+AR_FLAGS = qv
+RANLIB = @RANLIB@
+DLLTOOL = @DLLTOOL@
+
+SUBDIRS = import
+CLEANDIRS = $(SUBDIRS)
+REQUIRED_SUBDIRS = $(SUBDIRS)
+
+CC=@CC@
+
+# Directory containing source files.
+srcdir = @srcdir@
+VPATH = @srcdir@
+
+CC_LD=$(CC)
+
+# CFLAGS is specifically reserved for setting from the command line
+# when running make.  I.E.  "make CFLAGS=-Wmissing-prototypes".
+CFLAGS = @CFLAGS@
+
+# LDFLAGS is specifically reserved for setting from the command line
+# when running make.
+LDFLAGS = @LDFLAGS@
+
+FLAGS_TO_PASS = \
+	"prefix=$(prefix)" \
+	"exec_prefix=$(exec_prefix)" \
+	"infodir=$(infodir)" \
+	"datarootdir=$(datarootdir)" \
+	"docdir=$(docdir)" \
+	"htmldir=$(htmldir)" \
+	"pdfdir=$(pdfdir)" \
+	"libdir=$(libdir)" \
+	"mandir=$(mandir)" \
+	"datadir=$(datadir)" \
+	"includedir=$(includedir)" \
+	"against=$(against)" \
+	"DESTDIR=$(DESTDIR)" \
+	"AR=$(AR)" \
+	"AR_FLAGS=$(AR_FLAGS)" \
+	"CC=$(CC)" \
+	"CFLAGS=$(CFLAGS)" \
+	"CXX=$(CXX)" \
+	"CXXFLAGS=$(CXXFLAGS)" \
+	"DLLTOOL=$(DLLTOOL)" \
+	"LDFLAGS=$(LDFLAGS)" \
+	"RANLIB=$(RANLIB)" \
+	"MAKEINFO=$(MAKEINFO)" \
+	"MAKEINFOFLAGS=$(MAKEINFOFLAGS)" \
+	"MAKEINFO_EXTRA_FLAGS=$(MAKEINFO_EXTRA_FLAGS)" \
+	"MAKEHTML=$(MAKEHTML)" \
+	"MAKEHTMLFLAGS=$(MAKEHTMLFLAGS)" \
+	"INSTALL=$(INSTALL)" \
+	"INSTALL_PROGRAM=$(INSTALL_PROGRAM)" \
+	"INSTALL_DATA=$(INSTALL_DATA)" \
+	"RUNTEST=$(RUNTEST)" \
+	"RUNTESTFLAGS=$(RUNTESTFLAGS)"
+
+all installcheck check info install-info clean-info dvi pdf install-pdf html install-html: force
+	@$(MAKE) $(FLAGS_TO_PASS) DO=$@ "DODIRS=$(SUBDIRS)" subdir_do
+
+# Traditionally "install" depends on "all".  But it may be useful
+# not to; for example, if the user has made some trivial change to a
+# source file and doesn't care about rebuilding or just wants to save the
+# time it takes for make to check that all is up to date.
+# install-only is intended to address that need.
+install: all
+	@$(MAKE) $(FLAGS_TO_PASS) install-only
+
+install-only: $(CONFIG_INSTALL)
+	@$(MAKE) DO=install "DODIRS=$(SUBDIRS)" $(FLAGS_TO_PASS) subdir_do
+
+uninstall: force $(CONFIG_UNINSTALL)
+	@$(MAKE) DO=uninstall "DODIRS=$(SUBDIRS)" $(FLAGS_TO_PASS) subdir_do
+
+# Convenience rule to handle recursion.
+$(LIBGNU) $(GNULIB_H): all-lib
+all-lib: import/Makefile
+	@$(MAKE) $(FLAGS_TO_PASS) DO=all DODIRS=import subdir_do
+.PHONY: all-lib
+
+clean mostlyclean: $(CONFIG_CLEAN)
+	@$(MAKE) $(FLAGS_TO_PASS) DO=clean "DODIRS=$(CLEANDIRS)" subdir_do
+
+distclean: clean
+	@$(MAKE) $(FLAGS_TO_PASS) DO=distclean "DODIRS=$(CLEANDIRS)" subdir_do
+	rm -f config.status config.h stamp-h
+	rm -f config.log config.cache
+	rm -f Makefile
+	rm -rf $(DEPDIR)
+
+maintainer-clean: local-maintainer-clean do-maintainer-clean distclean
+realclean: maintainer-clean
+
+local-maintainer-clean:
+	@echo "This command is intended for maintainers to use;"
+	@echo "it deletes files that may require special tools to rebuild."
+	rm -f config.status
+
+do-maintainer-clean:
+	@$(MAKE) $(FLAGS_TO_PASS) DO=maintainer-clean "DODIRS=$(CLEANDIRS)" \
+		subdir_do
+
+subdir_do: force
+	@for i in $(DODIRS); do \
+		case $$i in \
+		$(REQUIRED_SUBDIRS)) \
+			if [ ! -f ./$$i/Makefile ] ; then \
+				echo "Missing $$i/Makefile" >&2 ; \
+				exit 1 ; \
+			fi ;; \
+		esac ; \
+		if [ -f ./$$i/Makefile ] ; then \
+			if (cd ./$$i; \
+				$(MAKE) $(FLAGS_TO_PASS) $(DO)) ; then true ; \
+			else exit 1 ; fi ; \
+		else true ; fi ; \
+	done
+
+Makefile: Makefile.in config.status
+	# Regenerate the Makefile.
+	CONFIG_FILES="Makefile" \
+	  CONFIG_COMMANDS= \
+	  CONFIG_HEADERS= \
+	  $(SHELL) config.status
+
+gnulib/Makefile: gnulib/Makefile.in config.status
+	CONFIG_FILES="gnulib/Makefile" \
+	  CONFIG_COMMANDS="depfiles" \
+	  CONFIG_HEADERS= \
+	  CONFIG_LINKS= \
+	  $(SHELL) config.status
+
+config.h: stamp-h ; @true
+stamp-h: $(srcdir)/config.in config.status
+	CONFIG_HEADERS=config.h:config.in \
+	  CONFIG_COMMANDS="default depdir" \
+	  CONFIG_FILES= \
+	  CONFIG_LINKS= \
+	  $(SHELL) config.status
+
+config.status: $(srcdir)/configure
+	$(SHELL) config.status --recheck
+
+ACLOCAL = aclocal
+ACLOCAL_AMFLAGS = -I import/m4 -I ../config
+
+include $(srcdir)/aclocal-m4-deps.mk
+
+$(srcdir)/aclocal.m4: @MAINTAINER_MODE_TRUE@ configure.ac $(aclocal_m4_deps)
+	cd $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
+
+AUTOCONF = autoconf
+configure_deps = $(srcdir)/configure.ac $(srcdir)/aclocal.m4
+$(srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(configure_deps)
+	cd $(srcdir) && $(AUTOCONF)
+
+AUTOHEADER = autoheader
+$(srcdir)/config.in: @MAINTAINER_MODE_TRUE@ $(configure_deps)
+	cd $(srcdir) && $(AUTOHEADER)
+	rm -f stamp-h
+	touch $@
+
+# automatic rebuilding in automake-generated Makefiles requires
+# this rule in the toplevel Makefile, which, with GNU make, causes
+# the desired updates through the implicit regeneration of the Makefile
+# and all of its prerequisites.
+am--refresh:
+	@:
+
+force:
+
+force_update:
+
+# GNU Make has an annoying habit of putting *all* the Makefile variables
+# into the environment, unless you include this target as a circumvention.
+# Rumor is that this will be fixed (and this target can be removed)
+# in GNU Make 4.0.
+.NOEXPORT:
+
+# GNU Make 3.63 has a different problem: it keeps tacking command line
+# overrides onto the definition of $(MAKE).  This variable setting
+# will remove them.
+MAKEOVERRIDES=
+
+# Disable implicit make rules.
+include $(srcdir)/../gdb/disable-implicit-rules.mk
+
+### end of the libgnu Makefile.in.