Add PostgreSQL home page to --help output

Per emerging standard in GNU programs and elsewhere.  Autoconf already
has support for specifying a home page, so we can just that.
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://www.postgresql.org/message-id/flat/8d389c5f-7fb5-8e48-9a4a-68cec44786fa%402ndquadrant.com

configure

@@ -585,7 +585,7 @@ PACKAGE_TARNAME='postgresql'
 PACKAGE_VERSION='13devel'
 PACKAGE_STRING='PostgreSQL 13devel'
 PACKAGE_BUGREPORT='pgsql-bugs@lists.postgresql.org'
-PACKAGE_URL=''
+PACKAGE_URL='https://www.postgresql.org/'
 
 ac_unique_file="src/backend/access/common/heaptuple.c"
 ac_default_prefix=/usr/local/pgsql
@@ -1600,6 +1600,7 @@ Use these variables to override the choices made by `configure' or to help
 it to find libraries and programs with nonstandard names/locations.
 
 Report bugs to <pgsql-bugs@lists.postgresql.org>.
+PostgreSQL home page: <https://www.postgresql.org/>.
 _ACEOF
 ac_status=$?
 fi
@@ -19516,7 +19517,8 @@ $config_links
 Configuration commands:
 $config_commands
 
-Report bugs to <pgsql-bugs@lists.postgresql.org>."
+Report bugs to <pgsql-bugs@lists.postgresql.org>.
+PostgreSQL home page: <https://www.postgresql.org/>."
 
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1

configure.in

@@ -17,7 +17,7 @@ dnl Read the Autoconf manual for details.
 dnl
 m4_pattern_forbid(^PGAC_)dnl to catch undefined macros
 
-AC_INIT([PostgreSQL], [13devel], [pgsql-bugs@lists.postgresql.org])
+AC_INIT([PostgreSQL], [13devel], [pgsql-bugs@lists.postgresql.org], [], [https://www.postgresql.org/])
 
 m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.69], [], [m4_fatal([Autoconf version 2.69 is required.
 Untested combinations of 'autoconf' and PostgreSQL versions are not

contrib/oid2name/oid2name.c

@@ -219,8 +219,9 @@ help(const char *progname)
 		   "  -p, --port=PORT            database server port number\n"
 		   "  -U, --username=USERNAME    connect as specified database user\n"
 		   "\nThe default action is to show all database OIDs.\n\n"
-		   "Report bugs to <%s>.\n",
-		   progname, progname, PACKAGE_BUGREPORT);
+		   "Report bugs to <%s>.\n"
+		   "%s home page: <%s>\n",
+		   progname, progname, PACKAGE_BUGREPORT, PACKAGE_NAME, PACKAGE_URL);
 }
 
 /*

contrib/pg_standby/pg_standby.c

@@ -613,6 +613,7 @@ usage(void)
 		   "e.g.\n"
 		   "  restore_command = 'pg_standby /mnt/server/archiverdir %%f %%p %%r'\n");
 	printf("\nReport bugs to <%s>.\n", PACKAGE_BUGREPORT);
+	printf("%s home page: <%s>\n", PACKAGE_NAME, PACKAGE_URL);
 }
 
 #ifndef WIN32

contrib/vacuumlo/vacuumlo.c

@@ -437,6 +437,7 @@ usage(const char *progname)
 	printf("  -W, --password            force password prompt\n");
 	printf("\n");
 	printf("Report bugs to <%s>.\n", PACKAGE_BUGREPORT);
+	printf("%s home page: <%s>\n", PACKAGE_NAME, PACKAGE_URL);
 }
 
 

src/Makefile.global.in

@@ -40,6 +40,8 @@ VERSION = @PACKAGE_VERSION@
 MAJORVERSION = @PG_MAJORVERSION@
 VERSION_NUM = @PG_VERSION_NUM@
 
+PACKAGE_URL = @PACKAGE_URL@
+
 # Set top_srcdir, srcdir, and VPATH.
 ifdef PGXS
 top_srcdir = $(top_builddir)

src/Makefile.shlib

@@ -389,7 +389,7 @@ endif # PORTNAME == cygwin || PORTNAME == win32
 %.pc: $(MAKEFILE_LIST)
 	echo 'Name: lib$(NAME)' >$@
 	echo 'Description: PostgreSQL lib$(NAME) library' >>$@
-	echo 'Url: http://www.postgresql.org/' >>$@
+	echo 'Url: $(PACKAGE_URL)' >>$@
 	echo 'Version: $(VERSION)' >>$@
 	echo 'Requires: ' >>$@
 	echo 'Requires.private: $(PKG_CONFIG_REQUIRES_PRIVATE)' >>$@

src/backend/main/main.c

@@ -360,6 +360,7 @@ help(const char *progname)
 			 "configuration settings and how to set them on the command line or in\n"
 			 "the configuration file.\n\n"
 			 "Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 

src/bin/initdb/initdb.c

@@ -2323,6 +2323,7 @@ usage(const char *progname)
 	printf(_("\nIf the data directory is not specified, the environment variable PGDATA\n"
 			 "is used.\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 static void

src/bin/pg_archivecleanup/pg_archivecleanup.c

@@ -270,6 +270,7 @@ usage(void)
 			 "e.g.\n"
 			 "  pg_archivecleanup /mnt/server/archiverdir 000000010000000000000010.00000020.backup\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 /*------------ MAIN ----------------------------------------*/

src/bin/pg_basebackup/pg_basebackup.c

@@ -397,6 +397,7 @@ usage(void)
 	printf(_("  -w, --no-password      never prompt for password\n"));
 	printf(_("  -W, --password         force password prompt (should happen automatically)\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 

src/bin/pg_basebackup/pg_receivewal.c

@@ -103,6 +103,7 @@ usage(void)
 	printf(_("      --create-slot      create a new replication slot (for the slot's name see --slot)\n"));
 	printf(_("      --drop-slot        drop the replication slot (for the slot's name see --slot)\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 static bool

src/bin/pg_basebackup/pg_recvlogical.c

@@ -104,6 +104,7 @@ usage(void)
 	printf(_("  -w, --no-password      never prompt for password\n"));
 	printf(_("  -W, --password         force password prompt (should happen automatically)\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 /*

src/bin/pg_checksums/pg_checksums.c

@@ -89,6 +89,7 @@ usage(void)
 	printf(_("\nIf no data directory (DATADIR) is specified, "
 			 "the environment variable PGDATA\nis used.\n\n"));
 	printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 /*

src/bin/pg_config/pg_config.c

@@ -103,6 +103,7 @@ help(void)
 	printf(_("  -?, --help            show this help, then exit\n"));
 	printf(_("\nWith no arguments, all known items are shown.\n\n"));
 	printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 static void

src/bin/pg_controldata/pg_controldata.c

@@ -42,6 +42,7 @@ usage(const char *progname)
 	printf(_("\nIf no data directory (DATADIR) is specified, "
 			 "the environment variable PGDATA\nis used.\n\n"));
 	printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 

src/bin/pg_ctl/pg_ctl.c

@@ -2096,6 +2096,7 @@ do_help(void)
 #endif
 
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 

src/bin/pg_dump/pg_dump.c

@@ -1048,6 +1048,7 @@ help(const char *progname)
 	printf(_("\nIf no database name is supplied, then the PGDATABASE environment\n"
 			 "variable value is used.\n\n"));
 	printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 static void

src/bin/pg_dump/pg_dumpall.c

@@ -671,6 +671,7 @@ help(void)
 	printf(_("\nIf -f/--file is not used, then the SQL script will be written to the standard\n"
 			 "output.\n\n"));
 	printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 

src/bin/pg_dump/pg_restore.c

@@ -520,4 +520,5 @@ usage(const char *progname)
 			 "multiple times to select multiple objects.\n"));
 	printf(_("\nIf no input file name is supplied, then standard input is used.\n\n"));
 	printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/bin/pg_resetwal/pg_resetwal.c

@@ -1224,4 +1224,5 @@ usage(void)
 	printf(_("      --wal-segsize=SIZE         size of WAL segments, in megabytes\n"));
 	printf(_("  -?, --help                     show this help, then exit\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/bin/pg_rewind/pg_rewind.c

@@ -88,6 +88,7 @@ usage(const char *progname)
 	printf(_("  -V, --version                  output version information, then exit\n"));
 	printf(_("  -?, --help                     show this help, then exit\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 

src/bin/pg_upgrade/option.c

@@ -337,6 +337,7 @@ usage(void)
 			 "  C:\\> pg_upgrade\n"));
 #endif
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 

src/bin/pg_waldump/pg_waldump.c

@@ -731,6 +731,7 @@ usage(void)
 			 "                         (optionally, show per-record statistics)\n"));
 	printf(_("  -?, --help             show this help, then exit\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 int

src/bin/pgbench/pgbench.c

@@ -681,8 +681,9 @@ usage(void)
 		   "  -V, --version            output version information, then exit\n"
 		   "  -?, --help               show this help, then exit\n"
 		   "\n"
-		   "Report bugs to <%s>.\n",
-		   progname, progname, PACKAGE_BUGREPORT);
+		   "Report bugs to <%s>.\n"
+		   "%s home page: <%s>\n",
+		   progname, progname, PACKAGE_BUGREPORT, PACKAGE_NAME, PACKAGE_URL);
 }
 
 /* return whether str matches "^\s*[-+]?[0-9]+$" */

src/bin/psql/help.c

@@ -145,6 +145,7 @@ usage(unsigned short int pager)
 					  "commands) from within psql, or consult the psql section in the PostgreSQL\n"
 					  "documentation.\n\n"));
 	fprintf(output, _("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	fprintf(output, _("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 
 	ClosePager(output);
 }

src/bin/scripts/clusterdb.c

@@ -292,4 +292,5 @@ help(const char *progname)
 	printf(_("  --maintenance-db=DBNAME   alternate maintenance database\n"));
 	printf(_("\nRead the description of the SQL command CLUSTER for details.\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/bin/scripts/createdb.c

@@ -278,4 +278,5 @@ help(const char *progname)
 	printf(_("  --maintenance-db=DBNAME      alternate maintenance database\n"));
 	printf(_("\nBy default, a database with the same name as the current user is created.\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/bin/scripts/createuser.c

@@ -376,4 +376,5 @@ help(const char *progname)
 	printf(_("  -w, --no-password         never prompt for password\n"));
 	printf(_("  -W, --password            force password prompt\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/bin/scripts/dropdb.c

@@ -178,4 +178,5 @@ help(const char *progname)
 	printf(_("  -W, --password            force password prompt\n"));
 	printf(_("  --maintenance-db=DBNAME   alternate maintenance database\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/bin/scripts/dropuser.c

@@ -176,4 +176,5 @@ help(const char *progname)
 	printf(_("  -w, --no-password         never prompt for password\n"));
 	printf(_("  -W, --password            force password prompt\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/bin/scripts/pg_isready.c

@@ -236,4 +236,5 @@ help(const char *progname)
 	printf(_("  -t, --timeout=SECS       seconds to wait when attempting connection, 0 disables (default: %s)\n"), DEFAULT_CONNECT_TIMEOUT);
 	printf(_("  -U, --username=USERNAME  user name to connect as\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/bin/scripts/reindexdb.c

@@ -775,4 +775,5 @@ help(const char *progname)
 	printf(_("  --maintenance-db=DBNAME   alternate maintenance database\n"));
 	printf(_("\nRead the description of the SQL command REINDEX for details.\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/bin/scripts/vacuumdb.c

@@ -950,4 +950,5 @@ help(const char *progname)
 	printf(_("  --maintenance-db=DBNAME   alternate maintenance database\n"));
 	printf(_("\nRead the description of the SQL command VACUUM for details.\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }

src/interfaces/ecpg/preproc/ecpg.c

@@ -59,6 +59,7 @@ help(const char *progname)
 	printf(_("\nIf no output file is specified, the name is formed by adding .c to the\n"
 			 "input file name, after stripping off .pgc if present.\n"));
 	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 static void

src/test/regress/pg_regress.c

@@ -2072,6 +2072,7 @@ help(void)
 	printf(_("if the tests could not be run for some reason.\n"));
 	printf(_("\n"));
 	printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 }
 
 int

src/tools/msvc/Solution.pm

@@ -146,20 +146,26 @@ sub GenerateFiles
 {
 	my $self = shift;
 	my $bits = $self->{platform} eq 'Win32' ? 32 : 64;
+	my $ac_init_found = 0;
 	my $package_name;
 	my $package_version;
 	my $package_bugreport;
+	my $package_url;
 
 	# Parse configure.in to get version numbers
 	open(my $c, '<', "configure.in")
 	  || confess("Could not open configure.in for reading\n");
 	while (<$c>)
 	{
-		if (/^AC_INIT\(\[([^\]]+)\], \[([^\]]+)\], \[([^\]]+)\]/)
+		if (/^AC_INIT\(\[([^\]]+)\], \[([^\]]+)\], \[([^\]]+)\], \[([^\]]*)\], \[([^\]]+)\]/)
 		{
+			$ac_init_found = 1;
+
 			$package_name      = $1;
 			$package_version   = $2;
 			$package_bugreport = $3;
+			#$package_tarname   = $4;
+			$package_url       = $5;
 
 			if ($package_version !~ /^(\d+)(?:\.(\d+))?/)
 			{
@@ -171,10 +177,7 @@ sub GenerateFiles
 	}
 	close($c);
 	confess "Unable to parse configure.in for all variables!"
-	  if ( $package_name eq ''
-		|| $package_version eq ''
-		|| $self->{numver} eq ''
-		|| $package_bugreport eq '');
+	  unless $ac_init_found;
 
 	if (IsNewer("src/include/pg_config_os.h", "src/include/port/win32.h"))
 	{
@@ -431,7 +434,7 @@ sub GenerateFiles
 		PACKAGE_NAME                             => qq{"$package_name"},
 		PACKAGE_STRING      => qq{"$package_name $package_version"},
 		PACKAGE_TARNAME     => lc qq{"$package_name"},
-		PACKAGE_URL         => undef,
+		PACKAGE_URL         => qq{"$package_url"},
 		PACKAGE_VERSION     => qq{"$package_version"},
 		PG_INT128_TYPE      => undef,
 		PG_INT64_TYPE       => 'long long int',