[Bug 1864426] Re: [SRU][live-build] can not customize the mkisoimage option

[Łukasz Zemczak]

I have sponsored this patch for both groovy and focal just now. Note to
the SRU team: I know this basically is a new feature instead of a
bugfix, but I think it should be thought more like a HWE change. It is
very important that the OEM team, working on OEM images, uses the same
tooling as we use via the archive. Removing the delta here should be
important even here. So I think this should be considered for accepting
as an SRU for focal (for the upcoming point-releases).

** Also affects: live-build (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Changed in: live-build (Ubuntu)
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1864426

Title:
  [SRU][live-build] can not customize the mkisoimage option

Status in OEM Priority Project:
  In Progress
Status in OEM Priority Project focal series:
  In Progress
Status in live-build package in Ubuntu:
  Fix Committed
Status in live-build source package in Focal:
  New

Bug description:
  [Impact]

  Although live build has been used in both oem and foundation team, but
  the main different is that:

  --Foundation--
  Only for squashfs, cd-image will be used after that, the iso image created by live build will not be used directly.

  --OEM--
  Oem team uses live build in whole process which includes several binary hooks, and the final image created by live build will be used directly.

  So the problem is that currently the iso image which created by live build doesn't support uefi boot,
  so when we build a support uefi bootable image, the mkisoimage needs extra options.

  [Test Case]
  With below options in any live build config (oem team put it in <config>/common), an uefi bootable image can be built.

  ISOHYBRID_OPTIONS="--uefi"
  GENISOIMAGE_OPTIONS_EXTRA="-eltorito-alt-boot -efi-boot boot/grub/efi.img -no-emul-boot -joliet-long"

  [Regression Potential]
  Low, oem team has been using this patch for years (from 2012),
  we haven't found any potential regression.

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