don't keep a gdb-specific date

Right now there are two nightly commits to update a file in the tree
with the current date.  One commit is for BFD, one is for gdb.

It seems unnecessary to me to do this twice.  We can make do with a
single such commit.

This patch changes gdb in a minimal way to reuse the BFD date -- it
extracts it from bfd/version.h and changes version.in to use the
placeholder string "DATE" for those times when a date is wanted.

I propose removing the cron job that updates the version on trunk, and
then check in this patch.

For release branches, we can keep the cron job, but just tell it to
rewrite bfd/version.h.  I believe this is a simple change in the
crontab -- the script will work just fine on this file.

This also moves version.in and version.h into common/, to reflect
their shared status; and updates gdbserver to use version.h besides.

	* common/create-version.sh: New file.
	* Makefile.in (version.c): Use bfd/version.h, common/version.in,
	create-version.sh.
	(HFILES_NO_SRCDIR): Use common/version.h.
	* version.in: Move to ...
	* common/version.in: ... here.  Replace date with "DATE".
	* version.h: Move to ...
	* common/version.h: ... here.
gdbserver:
	* Makefile.in (version.c): Use bfd/version.h, common/version.in,
	create-version.sh.
	(version.o): Remove.
	* gdbreplay.c: Include version.h.
	(version, host_name): Don't declare.
	* server.h: Include version.h.
	(version, host_name): Don't declare.
doc:
	* Makefile.in (POD2MAN1, POD2MAN5): Use version.subst.
	(GDBvn.texi): Use version.subst.
	(version.subst): New target.
	(mostlyclean): Remove version.subst.

gdb/ChangeLog

@@ -1,3 +1,14 @@
+2013-06-24  Tom Tromey  <tromey@redhat.com>
+
+	* common/create-version.sh: New file.
+	* Makefile.in (version.c): Use bfd/version.h, common/version.in,
+	create-version.sh.
+	(HFILES_NO_SRCDIR): Use common/version.h.
+	* version.in: Move to ...
+	* common/version.in: ... here.  Replace date with "DATE".
+	* version.h: Move to ...
+	* common/version.h: ... here.
+
 2013-06-21  Joel Brobecker  <brobecker@adacore.com>
 
 	* gdb/gnulib/Makefile.in: Update date in copyright header.

gdb/Makefile.in

@@ -791,7 +791,7 @@ i386bsd-nat.h xml-support.h xml-tdesc.h alphabsd-tdep.h gdb_obstack.h \
 ia64-tdep.h ada-lang.h ada-varobj.h varobj.h frv-tdep.h nto-tdep.h serial.h \
 c-lang.h d-lang.h go-lang.h frame.h event-loop.h block.h cli/cli-setshow.h \
 cli/cli-decode.h cli/cli-cmds.h cli/cli-dump.h cli/cli-utils.h \
-cli/cli-script.h macrotab.h symtab.h version.h \
+cli/cli-script.h macrotab.h symtab.h common/version.h \
 gnulib/import/string.in.h gnulib/import/str-two-way.h \
 gnulib/import/stdint.in.h remote.h remote-notif.h gdb.h sparc-nat.h \
 gdbthread.h dwarf2-frame.h dwarf2-frame-tailcall.h nbsd-nat.h dcache.h \
@@ -1420,13 +1420,9 @@ $(srcdir)/copying.c: @MAINTAINER_MODE_TRUE@ $(srcdir)/../COPYING3 $(srcdir)/copy
 		< $(srcdir)/../COPYING3 > $(srcdir)/copying.tmp
 	mv $(srcdir)/copying.tmp $(srcdir)/copying.c
 
-version.c: Makefile version.in
-	rm -f version.c-tmp version.c
-	echo '#include "version.h"' >> version.c-tmp
-	echo 'const char version[] = "'"`sed q ${srcdir}/version.in`"'";' >> version.c-tmp
-	echo 'const char host_name[] = "$(host_alias)";' >> version.c-tmp
-	echo 'const char target_name[] = "$(target_alias)";' >> version.c-tmp
-	mv version.c-tmp version.c
+version.c: Makefile common/version.in $(srcdir)/../bfd/version.h $(srcdir)/common/create-version.sh
+	$(SHELL) $(srcdir)/common/create-version.sh $(srcdir) \
+	    $(host_alias) $(target_alias) version.c
 
 observer.h: observer.sh doc/observer.texi
 	${srcdir}/observer.sh h ${srcdir}/doc/observer.texi observer.h

gdb/common/create-version.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+# Copyright (C) 1989-2013 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/>.
+
+# Create version.c from version.in.
+# Usage:
+#    create-version.sh PATH-TO-GDB-SRCDIR HOST_ALIAS \
+#        TARGET_ALIAS OUTPUT-FILE-NAME
+
+srcdir="$1"
+host_alias="$2"
+target_alias="$3"
+output="$4"
+
+rm -f version.c-tmp $output version.tmp
+date=`sed -n -e 's/^.* BFD_VERSION_DATE \(.*\)$$/\1/p' $srcdir/../bfd/version.h`
+sed -e "s/DATE/$date/" < $srcdir/common/version.in > version.tmp
+echo '#include "version.h"' >> version.c-tmp
+echo 'const char version[] = "'"`sed q version.tmp`"'";' >> version.c-tmp
+echo 'const char host_name[] = "$host_alias";' >> version.c-tmp
+echo 'const char target_name[] = "$target_alias";' >> version.c-tmp
+mv version.c-tmp $output
+rm -f version.tmp

gdb/common/version.in

@@ -0,0 +1 @@
+7.6.50.DATE-cvs

gdb/doc/ChangeLog

@@ -1,3 +1,10 @@
+2013-06-24  Tom Tromey  <tromey@redhat.com>
+
+	* Makefile.in (POD2MAN1, POD2MAN5): Use version.subst.
+	(GDBvn.texi): Use version.subst.
+	(version.subst): New target.
+	(mostlyclean): Remove version.subst.
+
 2013-06-20  Pedro Alves  <pedro@codesourcery.com>
 
 	* gdb.texinfo (GDB/MI Data Manipulation)

gdb/doc/Makefile.in

@@ -172,9 +172,9 @@ TEXI2POD = perl $(srcdir)/../../etc/texi2pod.pl \
 		$(MAKEINFOFLAGS) $(MAKEINFO_EXTRA_FLAGS)
 
 POD2MAN1 = pod2man --center="GNU Development Tools" \
-		   --release="gdb-`sed q $(srcdir)/../version.in`" --section=1
+		   --release="gdb-`sed q version.subst`" --section=1
 POD2MAN5 = pod2man --center="GNU Development Tools" \
-		   --release="gdb-`sed q $(srcdir)/../version.in`" --section=5
+		   --release="gdb-`sed q version.subst`" --section=5
 
 # List of man pages generated from gdb.texi
 MAN1S = gdb.1 gdbserver.1 gcore.1
@@ -378,9 +378,9 @@ refcard.pdf : refcard.tex $(REFEDITS)
 	mv sedref.pdf refcard.pdf
 	rm -f sedref.log sedref.tex tmp.sed
 
-# File to record current GDB version number (copied from main dir version.in)
-GDBvn.texi : ${gdbdir}/version.in
-	echo "@set GDBVN `sed q $(srcdir)/../version.in`" > ./GDBvn.new
+# File to record current GDB version number.
+GDBvn.texi : version.subst
+	echo "@set GDBVN `sed q version.subst`" > ./GDBvn.new
 	if [ -n "$(PKGVERSION)" ]; then \
 	  echo "@set VERSION_PACKAGE $(PKGVERSION)" >> ./GDBvn.new; \
 	fi
@@ -396,6 +396,10 @@ GDBvn.texi : ${gdbdir}/version.in
 	fi
 	mv GDBvn.new GDBvn.texi
 
+version.subst: $(gdbdir)/common/version.in $(gdbdir)/../bfd/version.h
+	date=`sed -n -e 's/^.* BFD_VERSION_DATE \(.*\)$$/\1/p' $(gdbdir)/../bfd/version.h`; \
+	sed -e "s/DATE/$$date/" < $(gdbdir)/common/version.in > version.subst
+
 # Updated atomically
 .PRECIOUS: GDBvn.texi
 
@@ -649,6 +653,7 @@ mostlyclean:
 	rm -f $(STABS_TEX_TMPS)
 	rm -f $(ANNOTATE_TEX_TMPS)
 	rm -f sedref.dvi sedref.tex tmp.sed
+	rm -f version.subst
 
 clean: mostlyclean
 	rm -f gdb-cfg.texi GDBvn.texi

gdb/gdbserver/ChangeLog

@@ -1,3 +1,13 @@
+2013-06-24  Tom Tromey  <tromey@redhat.com>
+
+	* Makefile.in (version.c): Use bfd/version.h, common/version.in,
+	create-version.sh.
+	(version.o): Remove.
+	* gdbreplay.c: Include version.h.
+	(version, host_name): Don't declare.
+	* server.h: Include version.h.
+	(version, host_name): Don't declare.
+
 2013-06-12  Pedro Alves  <palves@redhat.com>
 
 	* linux-x86-low.c (linux_is_elf64): Delete global.

gdb/gdbserver/Makefile.in

@@ -389,13 +389,9 @@ am--refresh:
 
 force:
 
-version.c: Makefile $(srcdir)/../version.in
-	rm -f version.c-tmp version.c
-	echo '#include "server.h"' >> version.c-tmp
-	echo 'const char version[] = "'"`sed q ${srcdir}/../version.in`"'";' >> version.c-tmp
-	echo 'const char host_name[] = "$(host_alias)";' >> version.c-tmp
-	mv version.c-tmp version.c
-version.o: version.c $(server_h)
+version.c: Makefile $(srcdir)/../common/version.in $(srcdir)/../../bfd/version.h $(srcdir)/../common/create-version.sh
+	$(SHELL) $(srcdir)/../common/create-version.sh $(srcdir)/.. \
+	    $(host_alias) $(target_alias) version.c
 
 xml-builtin.c: stamp-xml; @true
 stamp-xml: $(XML_DIR)/feature_to_c.sh Makefile $(XML_FILES)

gdb/gdbserver/gdbreplay.c

@@ -19,6 +19,7 @@
 
 #include "config.h"
 #include "build-gnulib-gdbserver/config.h"
+#include "version.h"
 
 #include <stdio.h>
 #if HAVE_SYS_FILE_H
@@ -72,10 +73,6 @@ typedef int socklen_t;
 /* Sort of a hack... */
 #define EOL (EOF - 1)
 
-/* Version information, from version.c.  */
-extern const char version[];
-extern const char host_name[];
-
 static int remote_desc;
 
 #ifdef __MINGW32CE__

gdb/gdbserver/server.h

@@ -28,6 +28,7 @@
 
 #include "libiberty.h"
 #include "ansidecl.h"
+#include "version.h"
 
 #include <stdarg.h>
 #include <stdio.h>
@@ -531,8 +532,4 @@ CORE_ADDR get_set_tsv_func_addr (void);
 extern CORE_ADDR current_insn_ptr;
 extern int emit_error;
 
-/* Version information, from version.c.  */
-extern const char version[];
-extern const char host_name[];
-
 #endif /* SERVER_H */

gdb/version.in

@@ -1 +0,0 @@
-7.6.50.20130624-cvs