--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/build-watch.d	Mon May 17 13:15:30 2010 -0500
@@ -0,0 +1,74 @@
+#!/usr/sbin/dtrace -s -q
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ *
+ * Copyright (c) 2010, Oracle and/or it's affiliates.  All rights reserved.
+ *
+ *
+ * build-watch.d - a simple dtrace script to keep track of some key
+ *		   information to help determine build dependencies.
+ */
+
+/*
+ * record paths successfully opened
+ */
+syscall::open:entry, syscall::open64:entry
+/(pid == $target) || progenyof($target)/
+{
+	self->file = cleanpath(copyinstr(arg0));
+}
+syscall::openat:entry
+/(pid == $target) || progenyof($target)/
+{
+	self->file = cleanpath(copyinstr(arg1));
+}
+
+syscall::open*:return
+/((pid == $target) || progenyof($target)) && (arg0 != -1) && (self->file != "")/
+{
+	@opened[self->file] = count();
+	self->file = 0;
+}
+
+/*
+ * record the programs successfully execed (full path names)
+ */
+proc:::exec
+/(pid == $target) || progenyof($target)/
+{
+	self->execpath = stringof(arg0);
+}
+
+proc:::exec-success
+/(pid == $target) || progenyof($target)/
+{
+	@tools[execname, self->execpath] = count();
+	self->execpath = 0;
+}
+
+/*
+ * Summarize the results of watching the [sub]process tree
+ */
+END
+{
+	printf("\n");
+	printa("TOOL: %s = %s\n", @tools);
+	printa("FILE: %s\n", @opened);
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/build-watch.pl	Mon May 17 13:15:30 2010 -0500
@@ -0,0 +1,151 @@
+#!/usr/perl5/bin/perl
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+# Copyright (c) 2010, Oracle and/or it's affiliates.  All rights reserved.
+#
+#
+# build-watch.pl - a simple utility to watch a process and it's children under
+# 		   dtrace and process the results for dependency information.
+#
+# Ex:
+#	$ export WS_TOP=/top/of/your/workspace
+#	$ cd $(WS_TOP)/components/{component}
+#	$ $(WS_TOP)/tools/build-watch.pl -c "gmake install"
+#
+
+use File::Temp qw/tempfile/;
+use Getopt::Long;
+
+my $verbose = 0;
+
+my @ignore = (
+	'^[^/\.].*',		# ignore paths that don't begin with / or .	
+	'^/dev/',		# ignore devices
+	'^/etc/',		# ignore config files
+	'^/proc/',		# ignore /proc
+	'^/tmp/',		# ignore temp files
+	'^/var/',		# ignore more temp/volatile files
+	'^/usr/lib/locale/',	# ignore locale support
+	'^/usr/share/lib/make/',	# ignore make bits
+	'^/usr/share/lib/zoneinfo/',	# ignore timezone info
+	'/SUNWspro/',		# ignore compiler bits
+	'/sunstudio12.1/',	# ignore more compiler bits
+	'^/ws/',		# nothing in /ws can be interesting
+	'^\.[/\.]{0,1}$'	# ignore ., .., and ./
+);
+
+sub match
+{
+	local($string, @expressions) = @_;
+
+	foreach (@expressions) {
+		($string =~ m{$_}) && return (1);
+	}
+	return (0);
+}
+
+sub process_dtrace_results
+{
+	local ($filename) = @_;
+	my (%tools, %files, $fh) = ();
+
+	open($fh, "<$filename") || die "open($filename): $!\n";
+	while (<$fh>) {
+		if (/^TOOL:\s+(\S+) = (\S+)$/) {
+			$tools{$2} = $1;
+		} elsif ((/^FILE:\s+(\S+)\s*$/) && (match($1, @ignore) == 0) &&
+			 (-e $1)) {
+			$files{$1} = $1;
+		}
+	}
+	close($fh);
+
+	return (\%tools, \%files);
+}
+
+sub generate_package_requirements
+{
+	local (*tools, *files) = @_;
+	my ($count, %pkgs, @search_strings, $search_string) = (0);
+
+	# create a set of search strings to query the package DB
+	foreach (sort (keys %tools, keys %files)) {
+		if ($count++ % 100 == 0) {
+			defined($search_string) && \
+				push(@search_strings, $search_string);
+			$search_string = $_;
+		} else {
+			$search_string .= " OR $_";
+		}
+	}
+	push(@search_strings, $search_string);
+
+	# walk through the search strings and query the package DB
+	foreach (@search_strings) {
+		my $IFH;
+
+		open($IFH, "pkg search -l -H -o path,pkg.name '$_'|");
+		while (<$IFH>) {
+           		(/^(\S+)\s+(\S+)$/) && ($pkgs{$1} = $2);
+		}
+		close($IFH);
+	}
+
+	return (\%pkgs);
+}
+
+#
+# Main execution begins here
+#
+GetOptions("c|command=s" => \$cmd, "i|input-file=s" => \@file,
+	   "v|verbose" => \$verbose);
+
+if (defined($cmd)) {
+	$file = (tempfile(UNLINK => 1))[1];
+
+	if (!defined($ENV{'WS_TOP'})) {
+		print("WS_TOP must be set in the calling environment\n");
+		exit(1);
+	}
+	($verbose == 1) && print("*** Executing '$cmd' under dtrace...\n");
+	system($ENV{'WS_TOP'}."/tools/build-watch.d", "-o", $file, "-c", $cmd);
+}
+
+($verbose == 1) && printf("*** Processing results...\n");
+my ($tools, $files) = process_dtrace_results($file);
+
+($verbose == 1) && printf("*** Generating package requirements...\n");
+my ($pkgs) = generate_package_requirements($tools, $files);
+
+if (defined($tools)) {
+	print "TOOL: $_\n" for (sort keys %$tools);
+}
+
+if (defined($files)) {
+	print "FILE: $_\n" for (sort keys %$files);
+}
+
+if (defined($pkgs)) {
+	@unique{values %$pkgs} = ();
+	print "PKG: $_\n" for (sort keys %unique);
+}
+
+exit(0);