diff --git a/scripts/build-all.py b/scripts/build-all.py
new file mode 100644
index 0000000..296d9ad
--- /dev/null
+++ b/scripts/build-all.py
@@ -0,0 +1,268 @@
+#! /usr/bin/env python
+
+# Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in the
+#       documentation and/or other materials provided with the distribution.
+#     * Neither the name of Code Aurora nor
+#       the names of its contributors may be used to endorse or promote
+#       products derived from this software without specific prior written
+#       permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Build the kernel for all targets using the Android build environment.
+#
+# TODO: Accept arguments to indicate what to build.
+
+import glob
+from optparse import OptionParser
+import subprocess
+import os
+import os.path
+import shutil
+import sys
+
+version = 'build-all.py, version 0.01'
+
+build_dir = '../all-kernels'
+make_command = ["vmlinux", "modules"]
+make_env = os.environ
+make_env.update({
+        'ARCH': 'arm',
+        'CROSS_COMPILE': 'arm-none-linux-gnueabi-',
+        'KCONFIG_NOTIMESTAMP': 'true' })
+all_options = {}
+
+def error(msg):
+    sys.stderr.write("error: %s\n" % msg)
+
+def fail(msg):
+    """Fail with a user-printed message"""
+    error(msg)
+    sys.exit(1)
+
+def check_kernel():
+    """Ensure that PWD is a kernel directory"""
+    if (not os.path.isfile('MAINTAINERS') or
+        not os.path.isfile('arch/arm/mach-msm/Kconfig')):
+        fail("This doesn't seem to be an MSM kernel dir")
+
+def check_build():
+    """Ensure that the build directory is present."""
+    if not os.path.isdir(build_dir):
+        try:
+            os.makedirs(build_dir)
+        except OSError as exc:
+            if exc.errno == errno.EEXIST:
+                pass
+            else:
+                raise
+
+def update_config(file, str):
+    print 'Updating %s with \'%s\'\n' % (file, str)
+    defconfig = open(file, 'a')
+    defconfig.write(str + '\n')
+    defconfig.close()
+
+def scan_configs():
+    """Get the full list of defconfigs appropriate for this tree."""
+    names = {}
+    for n in glob.glob('arch/arm/configs/[fm]sm[0-9-]*_defconfig'):
+        names[os.path.basename(n)[:-10]] = n
+    for n in glob.glob('arch/arm/configs/qsd*_defconfig'):
+        names[os.path.basename(n)[:-10]] = n
+    for n in glob.glob('arch/arm/configs/apq*_defconfig'):
+        names[os.path.basename(n)[:-10]] = n
+    return names
+
+class Builder:
+    def __init__(self, logname):
+        self.logname = logname
+        self.fd = open(logname, 'w')
+
+    def run(self, args):
+        devnull = open('/dev/null', 'r')
+        proc = subprocess.Popen(args, stdin=devnull,
+                env=make_env,
+                bufsize=0,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.STDOUT)
+        count = 0
+        # for line in proc.stdout:
+        rawfd = proc.stdout.fileno()
+        while True:
+            line = os.read(rawfd, 1024)
+            if not line:
+                break
+            self.fd.write(line)
+            self.fd.flush()
+            if all_options.verbose:
+                sys.stdout.write(line)
+                sys.stdout.flush()
+            else:
+                for i in range(line.count('\n')):
+                    count += 1
+                    if count == 64:
+                        count = 0
+                        print
+                    sys.stdout.write('.')
+                sys.stdout.flush()
+        print
+        result = proc.wait()
+
+        self.fd.close()
+        return result
+
+failed_targets = []
+
+def build(target):
+    dest_dir = os.path.join(build_dir, target)
+    log_name = '%s/log-%s.log' % (build_dir, target)
+    print 'Building %s in %s log %s' % (target, dest_dir, log_name)
+    if not os.path.isdir(dest_dir):
+        os.mkdir(dest_dir)
+    defconfig = 'arch/arm/configs/%s_defconfig' % target
+    dotconfig = '%s/.config' % dest_dir
+    savedefconfig = '%s/defconfig' % dest_dir
+    shutil.copyfile(defconfig, dotconfig)
+
+    devnull = open('/dev/null', 'r')
+    subprocess.check_call(['make', 'O=%s' % dest_dir,
+        '%s_defconfig' % target], env=make_env, stdin=devnull)
+    devnull.close()
+
+    if not all_options.updateconfigs:
+        build = Builder(log_name)
+
+        result = build.run(['make', 'O=%s' % dest_dir] + make_command)
+
+        if result != 0:
+            if all_options.keep_going:
+                failed_targets.append(target)
+                fail_or_error = error
+            else:
+                fail_or_error = fail
+            fail_or_error("Failed to build %s, see %s" % (target, build.logname))
+
+    # Copy the defconfig back.
+    if all_options.configs or all_options.updateconfigs:
+        devnull = open('/dev/null', 'r')
+        subprocess.check_call(['make', 'O=%s' % dest_dir,
+            'savedefconfig'], env=make_env, stdin=devnull)
+        devnull.close()
+        shutil.copyfile(savedefconfig, defconfig)
+
+def build_many(allconf, targets):
+    print "Building %d target(s)" % len(targets)
+    for target in targets:
+        if all_options.updateconfigs:
+            update_config(allconf[target], all_options.updateconfigs)
+        build(target)
+    if failed_targets:
+        fail('\n  '.join(["Failed targets:"] +
+            [target for target in failed_targets]))
+
+def main():
+    global make_command
+
+    check_kernel()
+    check_build()
+
+    configs = scan_configs()
+
+    usage = ("""
+           %prog [options] all                 -- Build all targets
+           %prog [options] target target ...   -- List specific targets
+           %prog [options] perf                -- Build all perf targets
+           %prog [options] noperf              -- Build all non-perf targets""")
+    parser = OptionParser(usage=usage, version=version)
+    parser.add_option('--configs', action='store_true',
+            dest='configs',
+            help="Copy configs back into tree")
+    parser.add_option('--list', action='store_true',
+            dest='list',
+            help='List available targets')
+    parser.add_option('-v', '--verbose', action='store_true',
+            dest='verbose',
+            help='Output to stdout in addition to log file')
+    parser.add_option('--oldconfig', action='store_true',
+            dest='oldconfig',
+            help='Only process "make oldconfig"')
+    parser.add_option('--updateconfigs',
+            dest='updateconfigs',
+            help="Update defconfigs with provided option setting, "
+                 "e.g. --updateconfigs=\'CONFIG_USE_THING=y\'")
+    parser.add_option('-j', '--jobs', type='int', dest="jobs",
+            help="Number of simultaneous jobs")
+    parser.add_option('-l', '--load-average', type='int',
+            dest='load_average',
+            help="Don't start multiple jobs unless load is below LOAD_AVERAGE")
+    parser.add_option('-k', '--keep-going', action='store_true',
+            dest='keep_going', default=False,
+            help="Keep building other targets if a target fails")
+    parser.add_option('-m', '--make-target', action='append',
+            help='Build the indicated make target (default: %s)' %
+                 ' '.join(make_command))
+
+    (options, args) = parser.parse_args()
+    global all_options
+    all_options = options
+
+    if options.list:
+        print "Available targets:"
+        for target in configs.keys():
+            print "   %s" % target
+        sys.exit(0)
+
+    if options.oldconfig:
+        make_command = ["oldconfig"]
+    elif options.make_target:
+        make_command = options.make_target
+
+    if options.jobs:
+        make_command.append("-j%d" % options.jobs)
+    if options.load_average:
+        make_command.append("-l%d" % options.load_average)
+
+    if args == ['all']:
+        build_many(configs, configs.keys())
+    elif args == ['perf']:
+        targets = []
+        for t in configs.keys():
+            if "perf" in t:
+                targets.append(t)
+        build_many(configs, targets)
+    elif args == ['noperf']:
+        targets = []
+        for t in configs.keys():
+            if "perf" not in t:
+                targets.append(t)
+        build_many(configs, targets)
+    elif len(args) > 0:
+        targets = []
+        for t in args:
+            if t not in configs.keys():
+                parser.error("Target '%s' not one of %s" % (t, configs.keys()))
+            targets.append(t)
+        build_many(configs, targets)
+    else:
+        parser.error("Must specify a target to build, or 'all'")
+
+if __name__ == "__main__":
+    main()