diff --git a/README b/README
index e25bbdb8d2..aa71c49e94 100644
--- a/README
+++ b/README
@@ -9,3 +9,38 @@ and then visiting http://localhost:6060/doc/install.html.
 
 Unless otherwise noted, the Go source files are distributed
 under the BSD-style license found in the LICENSE file.
+
+--
+
+Binary Distribution Notes
+
+If you have just untarred a binary Go distribution, then there are some
+environment variables you'll need to set in your .profile (or equivalent):
+
+    GOOS should be set to your operating system (eg, linux),
+    GOARCH should be your processor architecture (eg, amd64),
+    GOROOT should be the directory you extracted the tarball to,
+    GOBIN should point to $GOROOT/bin.
+
+For example, if you downloaded the tarball 
+
+    go.release.YYYY-MM-DD.linux-amd64.tar.gz 
+
+and extracted it to 
+
+    /home/username/go
+
+you would set the following variables:
+
+    export GOOS=linux
+    export GOARCH=amd64
+    export GOROOT=/home/username/go
+    export GOBIN=$GOROOT/bin
+
+See doc/install.html for more detail about these flags.
+
+Additionally, $GOROOT should be in your $PATH:
+    
+    export PATH=PATH:$GOROOT
+    
+
diff --git a/misc/dashboard/README b/misc/dashboard/README
index b2bc3c2d37..72d5546a4f 100644
--- a/misc/dashboard/README
+++ b/misc/dashboard/README
@@ -24,11 +24,19 @@ export GOARCH=XXX
 export GOOS=XXX
 export GOBIN=/gobuild/bin
 export PATH=$PATH:/gobuild/bin
-export BUILDER=XXX
+export BUILDER=$GOOS-$GOARCH
 export BUILDHOST=godashboard.appspot.com
 
-* Write the key ~gobuild/.gobuildkey (you need to get it from someone who knows
-                                      the key)
+* Write the key ~gobuild/.gobuildkey 
+  You need to get it from someone who knows the key.
+  You may also use a filename of the form .gobuildkey-$BUILDER if you
+  wish to run builders for multiple targets.
+
+* Append your username and password googlecode.com credentials from
+    https://code.google.com/hosting/settings
+  to the buildkey file in the format "Username\nPassword\n".
+  (This is for uploading tarballs to the project downloads section,
+   and is an optional step.)
 
 * sudo apt-get install bison gcc libc6-dev ed make
 * cd ~gobuild
diff --git a/misc/dashboard/buildcontrol.py b/misc/dashboard/buildcontrol.py
index 91b684f799..ec503e7ffe 100644
--- a/misc/dashboard/buildcontrol.py
+++ b/misc/dashboard/buildcontrol.py
@@ -18,6 +18,8 @@ buildhost = ''
 buildport = -1
 buildkey = ''
 
+upload_project = "go"
+
 def main(args):
     global buildport, buildhost, buildkey
 
@@ -35,14 +37,23 @@ def main(args):
         buildport = int(os.environ['BUILDPORT'])
 
     try:
-        buildkey = file('%s/.gobuildkey-%s' % (os.environ['HOME'], os.environ['BUILDER']), 'r').read().strip()
+        buildkeyfile = file('%s/.gobuildkey-%s' % (os.environ['HOME'], os.environ['BUILDER']), 'r')
+        buildkey = buildkeyfile.readline().strip()
     except IOError:
         try:
-            buildkey = file('%s/.gobuildkey' % os.environ['HOME'], 'r').read().strip()
+            buildkeyfile = file('%s/.gobuildkey' % os.environ['HOME'], 'r')
+            buildkey = buildkeyfile.readline().strip()
         except IOError:
             print >>sys.stderr, "Need key in ~/.gobuildkey-%s or ~/.gobuildkey" % os.environ['BUILDER']
             return
 
+    # get upload credentials
+    try:
+        username = buildkeyfile.readline().strip()
+        password = buildkeyfile.readline().strip()
+    except:
+        username, password = None, None
+
     if args[1] == 'init':
         return doInit(args)
     elif args[1] == 'hwget':
@@ -55,6 +66,8 @@ def main(args):
         return doRecord(args)
     elif args[1] == 'benchmarks':
         return doBenchmarks(args)
+    elif args[1] == 'upload':
+        return doUpload(args, username, password)
     else:
         return usage(args[0])
 
@@ -68,6 +81,7 @@ Commands:
   next <builder>: get the next revision number to by built by the given builder
   record <builder> <rev> <ok|log file>: record a build result
   benchmarks <builder> <rev> <log file>: record benchmark numbers
+  upload <builder> <summary> <tar file>: upload tarball to googlecode
 ''' % name)
     return 1
 
@@ -165,6 +179,29 @@ def doBenchmarks(args):
         e.append(b)
     return command('benchmarks', {'node': c.node, 'builder': builder, 'benchmarkdata': binascii.b2a_base64(''.join(e))})
 
+def doUpload(args, username, password):
+    # fail gracefully if no username or password set
+    if not username or not password:
+        return
+
+    if len(args) != 5:
+        return usage(args[0])
+    builder = args[2]
+    summary = args[3]
+    filename = args[4]
+
+    from googlecode_upload import upload
+    code, msg, url = upload(
+        filename, # filename
+        upload_project, # 'go'
+        username,
+        password,
+        summary,
+        builder.split('-'), # labels
+    )
+    if code != 201:
+        raise Failed('Upload returned code %s msg "%s".' % (code, msg))
+
 def encodeMultipartFormdata(fields, files):
     """fields is a sequence of (name, value) elements for regular form fields.
     files is a sequence of (name, filename, value) elements for data to be uploaded as files"""
diff --git a/misc/dashboard/buildcron.sh b/misc/dashboard/buildcron.sh
index 5f43007964..7aa70ce571 100644
--- a/misc/dashboard/buildcron.sh
+++ b/misc/dashboard/buildcron.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 # Copyright 2010 The Go Authors.  All rights reserved.
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
@@ -48,7 +48,7 @@ fi
 mkdir -p $GOROOT/bin
 
 cd $GOROOT/..
-cp go/misc/dashboard/builder.sh go/misc/dashboard/buildcontrol.py .
+cp go/misc/dashboard/{builder.sh,buildcontrol.py,googlecode_upload.py} .
 chmod a+x builder.sh buildcontrol.py
 cd go
 ../buildcontrol.py next $BUILDER
diff --git a/misc/dashboard/builder.sh b/misc/dashboard/builder.sh
index b302acec28..a73924c7b9 100644
--- a/misc/dashboard/builder.sh
+++ b/misc/dashboard/builder.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 # Copyright 2009 The Go Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style
@@ -31,6 +31,7 @@ fi
 
 export PATH=$PATH:`pwd`/candidate/bin
 export GOBIN=`pwd`/candidate/bin
+export BAKED_GOROOT=/usr/local/go
 
 while true ; do
     cd go || fatal "Cannot cd into 'go'"
@@ -72,6 +73,18 @@ while true ; do
             python ../../../buildcontrol.py benchmarks $BUILDER $rev ../../benchmarks || fatal "Cannot record benchmarks"
             cd .. || fatal "failed to cd out of pkg"
         fi
+        # check if we're at a release (via the hg summary)
+        #  if so, package the tar.gz and upload to googlecode
+        SUMMARY=$(hg log -l 1 | grep summary\: | awk '{print $2}')
+        if [[ "x${SUMMARY:0:7}" == "xrelease" ]]; then
+            echo "Uploading binary to googlecode"
+            TARBALL="go.$SUMMARY.$BUILDER.tar.gz"
+            ./clean.bash --nopkg
+            cd .. || fatal "Cannot cd up"
+            tar czf ../$TARBALL . || fatal "Cannot create tarball"
+            ../buildcontrol.py upload $BUILDER $SUMMARY ../$TARBALL || fatal "Cannot upload tarball"
+            cd src || fatal "Cannot cd src"
+        fi
     fi
     cd ../.. || fatal "Cannot cd up"
     sleep 10
diff --git a/misc/dashboard/googlecode_upload.py b/misc/dashboard/googlecode_upload.py
new file mode 100644
index 0000000000..d2d5f974ce
--- /dev/null
+++ b/misc/dashboard/googlecode_upload.py
@@ -0,0 +1,248 @@
+#!/usr/bin/env python
+#
+# Copyright 2006, 2007 Google Inc. All Rights Reserved.
+# Author: danderson@google.com (David Anderson)
+#
+# Script for uploading files to a Google Code project.
+#
+# This is intended to be both a useful script for people who want to
+# streamline project uploads and a reference implementation for
+# uploading files to Google Code projects.
+#
+# To upload a file to Google Code, you need to provide a path to the
+# file on your local machine, a small summary of what the file is, a
+# project name, and a valid account that is a member or owner of that
+# project.  You can optionally provide a list of labels that apply to
+# the file.  The file will be uploaded under the same name that it has
+# in your local filesystem (that is, the "basename" or last path
+# component).  Run the script with '--help' to get the exact syntax
+# and available options.
+#
+# Note that the upload script requests that you enter your
+# googlecode.com password.  This is NOT your Gmail account password!
+# This is the password you use on googlecode.com for committing to
+# Subversion and uploading files.  You can find your password by going
+# to http://code.google.com/hosting/settings when logged in with your
+# Gmail account. If you have already committed to your project's
+# Subversion repository, the script will automatically retrieve your
+# credentials from there (unless disabled, see the output of '--help'
+# for details).
+#
+# If you are looking at this script as a reference for implementing
+# your own Google Code file uploader, then you should take a look at
+# the upload() function, which is the meat of the uploader.  You
+# basically need to build a multipart/form-data POST request with the
+# right fields and send it to https://PROJECT.googlecode.com/files .
+# Authenticate the request using HTTP Basic authentication, as is
+# shown below.
+#
+# Licensed under the terms of the Apache Software License 2.0:
+#  http://www.apache.org/licenses/LICENSE-2.0
+#
+# Questions, comments, feature requests and patches are most welcome.
+# Please direct all of these to the Google Code users group:
+#  http://groups.google.com/group/google-code-hosting
+
+"""Google Code file uploader script.
+"""
+
+__author__ = 'danderson@google.com (David Anderson)'
+
+import httplib
+import os.path
+import optparse
+import getpass
+import base64
+import sys
+
+
+def upload(file, project_name, user_name, password, summary, labels=None):
+  """Upload a file to a Google Code project's file server.
+
+  Args:
+    file: The local path to the file.
+    project_name: The name of your project on Google Code.
+    user_name: Your Google account name.
+    password: The googlecode.com password for your account.
+              Note that this is NOT your global Google Account password!
+    summary: A small description for the file.
+    labels: an optional list of label strings with which to tag the file.
+
+  Returns: a tuple:
+    http_status: 201 if the upload succeeded, something else if an
+                 error occured.
+    http_reason: The human-readable string associated with http_status
+    file_url: If the upload succeeded, the URL of the file on Google
+              Code, None otherwise.
+  """
+  # The login is the user part of user@gmail.com. If the login provided
+  # is in the full user@domain form, strip it down.
+  if user_name.endswith('@gmail.com'):
+    user_name = user_name[:user_name.index('@gmail.com')]
+
+  form_fields = [('summary', summary)]
+  if labels is not None:
+    form_fields.extend([('label', l.strip()) for l in labels])
+
+  content_type, body = encode_upload_request(form_fields, file)
+
+  upload_host = '%s.googlecode.com' % project_name
+  upload_uri = '/files'
+  auth_token = base64.b64encode('%s:%s'% (user_name, password))
+  headers = {
+    'Authorization': 'Basic %s' % auth_token,
+    'User-Agent': 'Googlecode.com uploader v0.9.4',
+    'Content-Type': content_type,
+    }
+
+  server = httplib.HTTPSConnection(upload_host)
+  server.request('POST', upload_uri, body, headers)
+  resp = server.getresponse()
+  server.close()
+
+  if resp.status == 201:
+    location = resp.getheader('Location', None)
+  else:
+    location = None
+  return resp.status, resp.reason, location
+
+
+def encode_upload_request(fields, file_path):
+  """Encode the given fields and file into a multipart form body.
+
+  fields is a sequence of (name, value) pairs. file is the path of
+  the file to upload. The file will be uploaded to Google Code with
+  the same file name.
+
+  Returns: (content_type, body) ready for httplib.HTTP instance
+  """
+  BOUNDARY = '----------Googlecode_boundary_reindeer_flotilla'
+  CRLF = '\r\n'
+
+  body = []
+
+  # Add the metadata about the upload first
+  for key, value in fields:
+    body.extend(
+      ['--' + BOUNDARY,
+       'Content-Disposition: form-data; name="%s"' % key,
+       '',
+       value,
+       ])
+
+  # Now add the file itself
+  file_name = os.path.basename(file_path)
+  f = open(file_path, 'rb')
+  file_content = f.read()
+  f.close()
+
+  body.extend(
+    ['--' + BOUNDARY,
+     'Content-Disposition: form-data; name="filename"; filename="%s"'
+     % file_name,
+     # The upload server determines the mime-type, no need to set it.
+     'Content-Type: application/octet-stream',
+     '',
+     file_content,
+     ])
+
+  # Finalize the form body
+  body.extend(['--' + BOUNDARY + '--', ''])
+
+  return 'multipart/form-data; boundary=%s' % BOUNDARY, CRLF.join(body)
+
+
+def upload_find_auth(file_path, project_name, summary, labels=None,
+                     user_name=None, password=None, tries=3):
+  """Find credentials and upload a file to a Google Code project's file server.
+
+  file_path, project_name, summary, and labels are passed as-is to upload.
+
+  Args:
+    file_path: The local path to the file.
+    project_name: The name of your project on Google Code.
+    summary: A small description for the file.
+    labels: an optional list of label strings with which to tag the file.
+    config_dir: Path to Subversion configuration directory, 'none', or None.
+    user_name: Your Google account name.
+    tries: How many attempts to make.
+  """
+
+  while tries > 0:
+    if user_name is None:
+      # Read username if not specified or loaded from svn config, or on
+      # subsequent tries.
+      sys.stdout.write('Please enter your googlecode.com username: ')
+      sys.stdout.flush()
+      user_name = sys.stdin.readline().rstrip()
+    if password is None:
+      # Read password if not loaded from svn config, or on subsequent tries.
+      print 'Please enter your googlecode.com password.'
+      print '** Note that this is NOT your Gmail account password! **'
+      print 'It is the password you use to access Subversion repositories,'
+      print 'and can be found here: http://code.google.com/hosting/settings'
+      password = getpass.getpass()
+
+    status, reason, url = upload(file_path, project_name, user_name, password,
+                                 summary, labels)
+    # Returns 403 Forbidden instead of 401 Unauthorized for bad
+    # credentials as of 2007-07-17.
+    if status in [httplib.FORBIDDEN, httplib.UNAUTHORIZED]:
+      # Rest for another try.
+      user_name = password = None
+      tries = tries - 1
+    else:
+      # We're done.
+      break
+
+  return status, reason, url
+
+
+def main():
+  parser = optparse.OptionParser(usage='googlecode-upload.py -s SUMMARY '
+                                 '-p PROJECT [options] FILE')
+  parser.add_option('-s', '--summary', dest='summary',
+                    help='Short description of the file')
+  parser.add_option('-p', '--project', dest='project',
+                    help='Google Code project name')
+  parser.add_option('-u', '--user', dest='user',
+                    help='Your Google Code username')
+  parser.add_option('-w', '--password', dest='password',
+                    help='Your Google Code password')
+  parser.add_option('-l', '--labels', dest='labels',
+                    help='An optional list of comma-separated labels to attach '
+                    'to the file')
+
+  options, args = parser.parse_args()
+
+  if not options.summary:
+    parser.error('File summary is missing.')
+  elif not options.project:
+    parser.error('Project name is missing.')
+  elif len(args) < 1:
+    parser.error('File to upload not provided.')
+  elif len(args) > 1:
+    parser.error('Only one file may be specified.')
+
+  file_path = args[0]
+
+  if options.labels:
+    labels = options.labels.split(',')
+  else:
+    labels = None
+
+  status, reason, url = upload_find_auth(file_path, options.project,
+                                         options.summary, labels,
+                                         options.user, options.password)
+  if url:
+    print 'The file was uploaded successfully.'
+    print 'URL: %s' % url
+    return 0
+  else:
+    print 'An error occurred. Your file was not uploaded.'
+    print 'Google Code upload server said: %s (%s)' % (reason, status)
+    return 1
+
+
+if __name__ == '__main__':
+  sys.exit(main())
diff --git a/src/clean.bash b/src/clean.bash
index db4cf40101..53fddd6c29 100755
--- a/src/clean.bash
+++ b/src/clean.bash
@@ -20,7 +20,9 @@ fi
 
 GOBIN="${GOBIN:-$HOME/bin}"
 
-rm -rf "$GOROOT"/pkg/${GOOS}_$GOARCH
+if [ "$1" != "--nopkg" ]; then
+	rm -rf "$GOROOT"/pkg/${GOOS}_$GOARCH
+fi
 rm -f "$GOROOT"/lib/*.a
 for i in lib9 libbio libcgo libmach cmd pkg \
 	../misc/cgo/gmp ../misc/cgo/stdio \
diff --git a/src/lib9/Makefile b/src/lib9/Makefile
index ccaf41a0fe..10c4b1640a 100644
--- a/src/lib9/Makefile
+++ b/src/lib9/Makefile
@@ -104,6 +104,8 @@ HFILES=\
 	"$(GOROOT)"/include/u.h\
 	"$(GOROOT)"/include/libc.h\
 
+BAKED_GOROOT?=$(GOROOT)
+
 install: $(LIB)
 	cp $(LIB) "$(GOROOT)/lib"
 
@@ -117,7 +119,7 @@ $(LIB): $(OFILES)
 	$(CC) -c $(CFLAGS) $<
 
 goos.$O: goos.c
-	$(CC) -c $(CFLAGS) -DGOOS='"$(GOOS)"' -DGOARCH='"$(GOARCH)"' -DGOROOT='"$(GOROOT)"' -DGOVERSION='"'"$$(../version.bash)"'"' $<
+	$(CC) -c $(CFLAGS) -DGOOS='"$(GOOS)"' -DGOARCH='"$(GOARCH)"' -DGOROOT='"$(BAKED_GOROOT)"' -DGOVERSION='"'"$$(../version.bash)"'"' $<
 
 clean:
 	rm -f *.$O *.6 6.out $(LIB)