Normally GCC is installed in a way that allows installing multiple
versions and switching between them. Our production images do not need
this and additionally the only things from the GCC package that are
needed are the shared libraries. To ensure these libraries are *always*
locatable regardless of the presence of /etc/ld.so.conf and
/etc/ld.so.cache we can install those libraries to plain old /usr/lib.
The GCC packages don't have a built in way to do this but we can get
away with extracting the libraries directly from the binary package.
This is actually similar to what ChromeOS did with a few exceptions:
- We use a native GCC build instead of the cross toolchain
- The archive is properly extracted from the package instead of feeding
the package directly to tar and ignoring the resulting warnings.
As an added benefit switching from a blacklist to a whitelist ensures
that extra cruft does not slip through the cracks, saving 5-10MB.
Create profile as a real directory instead of a symlink to the board
root's configuration. Normally the board root does not modify this but
it is useful for build_image to use it to modify package.provided.
Normally Gentoo expects moving between major GCC releases to be a manual
step. In our case we want this to always be automatic, otherwise the GCC
version won't be switched at all.
Apparently expanding an empty string before a variable assignment forces
that assignment to be interpreted as a command instead. Instead of an
empty string use env as our sudo alternative when running as root.
Needed for portage 2.2. Sync URIs are included but not very useful yet
because portage only can do `git pull` but not `git clone`. An extra
helper script will be required to do the initial clone it seems.
Binary packages may be useful for re-installing a package with a
different INSTALL_MASK. Can be used to install debug symbols.
Instead of gluing in a special PROD_INSTALL_MASK for all images use
profiles to configure the differences between the base build root,
production images, and developer images. This offers much more
flexibility and is needed for providing a full dev environment in
developer images.
Using parallel_emerge has been disabled by default for all commands
except build_image for quite a while now, build_image kept it just
because it was still a bit faster than normal emerge. Keeping
parallel_emerge complicates future changes to build_image so it needs to
drop it entirely. Since that means nothing uses it by default we might
as well just rip out support for it entirely.
VHD was just for testing, raw is more useful for published images.
coreos-install will now be able to install working xen instances:
coreos-install -d /dev/xvda -o xen -c cloud-config.yml
Missed this in 7231b95a, the update zip should still be built when the
usr partition is extracted for generating updates but build_image itself
is not generating and signing the update.
The current generate_update function is now less useful, the important
part that we need is just the partition image now. Also by defaulting to
extracting the partition the old cors_generate_update which is still in
use by devserver can be removed entirely, devserver will just expect the
extracted partition image instead.
Attempting to work around an apparent race in mtools, the command
'extlinux' these days is just the install tool for mounted partitions
while 'syslinux' is for unmounted devices.
Evaluating this as a user config causes it to block on
coreos-environment-setup.service which will wait on networking. This
makes it hard to add extra tricks for testing/debugging situations where
networking is failing. For example, to trigger dhcpcd if networkd dies:
#cloud-config
write_files:
- path: /etc/systemd/system/systemd-networkd.service.d/dhcpcd.conf
content: |
[Unit]
OnFailure=dhcpcd.service
[Service]
Restart=no
The new Update() performs the same tasks as the old Resize()
in addition to formatting previously-unformatted partitions. This
allows children disk-layouts to repartition the base layout in
addition to resizing.
I started to move board files under a boards/ directory similar to how
the SDK is under sdk/ but didn't do so everywhere. This should finish
the job so everything is consistent now.
Note: This prefix is only used in developer and buildbot uploads. When
final releases are copied to $channel.release.core-os.net it doesn't use
the prefix since a) I already published urls without the prefix and b)
no sdk files are ever posted to the public release locations.
