This adds a new tool, isobuild, which replaces the ISO-building
functionality previously provided by live-build and cdimage. It is
invoked from auto/build when MAKE_ISO=yes.
The tool supports:
- Layered desktop images (Ubuntu Desktop, flavors)
- Non-layered images (Kubuntu, Ubuntu Unity)
- Images with package pools (most installers)
- Images without pools (Ubuntu Core Installer)
The isobuild command has several subcommands:
- init: Initialize the ISO build directory structure
- setup-apt: Configure APT for package pool generation
- generate-pool: Create the package pool from a seed
- generate-sources: Generate cdrom.sources for the installed system
- add-live-filesystem: Add squashfs and kernel/initrd to the ISO
- make-bootable: Add GRUB and other boot infrastructure
- make-iso: Generate the final ISO image
auto/config is updated to:
- Set MAKE_ISO=yes for relevant image types
- Set POOL_SEED_NAME for images that need a package pool
- Invoke gen-iso-ids to compute ISO metadata
auto/build is updated to:
- Remove old live-build ISO handling code
- Invoke isobuild at appropriate points in the build
lb_binary_layered is updated to create squashfs files with
cdrom.sources included for use in the ISO.
