Add script to create a Debian chroot environment

Add script to create a Debian chroot environment

For building Debian wheezy compatable binary packages we need to set up a number
of Debian chroot environments. To avoid to many manual steps this script should
do the bulk of this work.

To create a chroot environment for building 64-bit stable:

$ tools/create_debian_chroot.sh amd64 stable /tmp/debian_amd64_stable

Then building the Debian image should be as easy as

$ sudo chroot /tmp/debian_amd_stable
$ cd /b/dart
$ tools/create_tarball.py
$ tools/build_debian_packages.py amd64

The build_debian_packages.py is still missing the architecture argument.

R=ricow@google.com, whesse@google.com
BUG=

Committed: https://code.google.com/p/dart/source/detail?r=34162

[ricow1, 2014-03-11 09:14:31]

dbc
So what is this for, with the user creation I would assume the bots, but if that
is the case we should create the chroot and then checkout the buildbot slave
inside that (creating it could be done using this script)
If that is the case there is no need for us to gclient sync the dart repo, since
that would be handled by our normal buildbot setup (that would eliminate the
stable channel concern in my comments

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.sh
File tools/create_debian_chroot.sh (right):

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.s...
tools/create_debian_chroot.sh:7: # Script to create a Debina wheezy chroot
environment for building Dart
Debina -> Debian

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.s...
tools/create_debian_chroot.sh:15: # Always expect two arguments, architecture
and channel.
update comment to expect 2 or 3 arguments

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.s...
tools/create_debian_chroot.sh:38:
SRC_URI="http://dart.googlecode.com/svn/trunk/deps/all.deps"
bleeding

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.s...
tools/create_debian_chroot.sh:46:
SRC_URI="http://dart.googlecode.com/svn/branches/1.2/deps/all.deps"
this will change every 6 weeks

[Bill Hesse, 2014-03-11 09:36:01]

I think that we need multiple, different chroots, with different architectures. 
If the buildbot runs in one chroot, then it cannot create the src tar file for
the different architecture without creating another.

Is it really true that we need different architectures, and that they will
produce different source tarballs?

Are we just building dart, or dartium?

We could make two separate buildslaves, in separate chroots, on the same
machine, and have the first trigger the second when it is done.

[Søren Gjesse, 2014-03-19 07:46:57]

PTAL

I updated the script to take three arguments

1. Architecture
2. Destination dir (optional)
3. Channel to checkout to /b/dart (optional, but requires 2)

Argument 3 makes it easy to create a chroot with a checkout for local testing.
For the ones used in the bot the initialization (checking out the slave repo
etc.) can be done manually or added to this script as well.

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.sh
File tools/create_debian_chroot.sh (right):

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.s...
tools/create_debian_chroot.sh:7: # Script to create a Debina wheezy chroot
environment for building Dart
On 2014/03/11 09:14:31, ricow1 wrote:
> Debina -> Debian

Done.

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.s...
tools/create_debian_chroot.sh:15: # Always expect two arguments, architecture
and channel.
On 2014/03/11 09:14:31, ricow1 wrote:
> update comment to expect 2 or 3 arguments

Done.

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.s...
tools/create_debian_chroot.sh:38:
SRC_URI="http://dart.googlecode.com/svn/trunk/deps/all.deps"
On 2014/03/11 09:14:31, ricow1 wrote:
> bleeding

Done.

https://codereview.chromium.org/193723006/diff/1/tools/create_debian_chroot.s...
tools/create_debian_chroot.sh:46:
SRC_URI="http://dart.googlecode.com/svn/branches/1.2/deps/all.deps"
On 2014/03/11 09:14:31, ricow1 wrote:
> this will change every 6 weeks

Yes, I added this while testing the script, but maybe we should not make an
actual checkout, or make it optional.

[ricow1, 2014-03-19 08:08:32]

LGTM

https://codereview.chromium.org/193723006/diff/20001/tools/create_debian_chro...
File tools/create_debian_chroot.sh (right):

https://codereview.chromium.org/193723006/diff/20001/tools/create_debian_chro...
tools/create_debian_chroot.sh:27: #if [ $# -gt 1 ]
commented out code

https://codereview.chromium.org/193723006/diff/20001/tools/create_debian_chro...
tools/create_debian_chroot.sh:35: #if [ $# -gt 2 ]
commented out code

https://codereview.chromium.org/193723006/diff/20001/tools/create_debian_chro...
tools/create_debian_chroot.sh:50:
SRC_URI="http://dart.googlecode.com/svn/branches/bleeding_edge/deps/all.deps"
long line

[Bill Hesse, 2014-03-20 10:20:20]

lgtm

https://codereview.chromium.org/193723006/diff/20001/tools/create_debian_chro...
File tools/create_debian_chroot.sh (right):

https://codereview.chromium.org/193723006/diff/20001/tools/create_debian_chro...
tools/create_debian_chroot.sh:18: # Expect two arguments, architecture, channel
and optional directory.
optional channel, and optional directory

[Søren Gjesse, 2014-03-20 10:54:16]

Improved the usage message as well.

https://codereview.chromium.org/193723006/diff/20001/tools/create_debian_chro...
File tools/create_debian_chroot.sh (right):

https://codereview.chromium.org/193723006/diff/20001/tools/create_debian_chro...
tools/create_debian_chroot.sh:18: # Expect two arguments, architecture, channel
and optional directory.
On 2014/03/20 10:20:20, Bill Hesse wrote:
> optional channel, and optional directory

Done.

[Søren Gjesse, 2014-03-20 10:55:01]

Committed patchset #4 manually as r34162 (presubmit successful).