[Bug 2075185] Re: [SRU] Enable ppc64el for .NET 8 on Noble

[Mateus Rodrigues de Morais]

PPA autopkgtest results:

- amd64 [PASS]: https://autopkgtest.ubuntu.com/results/autopkgtest-noble-dotnet-bootstrap-dotnet8.0.107-noble-stage2/noble/amd64/d/dotnet8/20240731_135618_e9ef1@/log.gz
- arm64 [PASS]: https://autopkgtest.ubuntu.com/results/autopkgtest-noble-dotnet-bootstrap-dotnet8.0.107-noble-stage2/noble/arm64/d/dotnet8/20240731_142817_9c18f@/log.gz
- ppc64el [PASS]: https://autopkgtest.ubuntu.com/results/autopkgtest-noble-dotnet-bootstrap-dotnet8.0.107-noble-stage2/noble/ppc64el/d/dotnet8/20240731_133633_02ad1@/log.gz
- s390x [PASS]: https://autopkgtest.ubuntu.com/results/autopkgtest-noble-dotnet-bootstrap-dotnet8.0.107-noble-stage2/noble/s390x/d/dotnet8/20240731_173515_70e4a@/log.gz

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Title:
  [SRU] Enable ppc64el for .NET 8 on Noble

Status in dotnet8 package in Ubuntu:
  New
Status in dotnet8 source package in Noble:
  New

Bug description:
  Upload available in PPA: https://launchpad.net/~dotnet-
  bootstrap/+archive/ubuntu/dotnet8.0.107-noble-stage2

  [ Impact ]

   * This SRU aims to enable the ppc64el architecture on .NET 8 targeting Ubuntu
     24.04 (Noble Numbat). This architecture has already been enabled for .NET
     8 on Oracular Oriole.

   * This came up as a request from IBM [0] and is now part of the .NET team's
     roadmap for the Oracular Oriole cycle.

   * Per the changelog, the changes introduced in this upload are only related
     to the enablement of ppc64el, with the exception of a d/copyright clean-up
     to fix some lintian warnings.

  [ Test Plan ]

   * On a ppc64el machine, run the steps outlined in the .NET SRU Test Plan
     document [0].

  [ Where problems could occur ]

   * The changes introduced in this upload have already been tested by IBM [0]
     in a PPA upload made available to them.

   * ppc64el has also been enabled for .NET 8.0.7 / 8.0.107 on Oracular.

   * The patches introduced to fix various FTBFS and autopkgtest failures on
     ppc64el are only modifying parameters in unit test projects within the .NET
     code-base as well as the autopkgtest testrunner code-base and its related
     libraries. These should impact no "shippable" product that lands in the
     final binary packages.

   * If a problem occurs, it would be limited to .NET on ppc64el and will show
     up when using the product with normal day-to-day operations, which the test
     plan should be able to cover.

  [ Other Info ]

   * The ppc64el build will require a bootstrap once it hits -proposed. The
     bootstrap package has been prepared and is available in a PPA [2]. It will
     be uploaded to the Ubuntu Bootstrap PPA by an Archive Admin once we're
     ready to bootstrap.

   * When this upload hits -proposed, the ppc64el build will stay in dependency
     wait status until the bootstrap package is uploaded and the Launchpad team
     triggers the bootstrap. The .NET team (Toolchains/Foundations) will drive
     the coordination of these tasks once we're there.

  [0] https://bugs.launchpad.net/ubuntu/noble/+source/dotnet8/+bug/2064530
  [1] https://launchpad.net/~dotnet-bootstrap/+archive/ubuntu/dotnet8.0.107-noble-stage1-ppc64el
  [2] https://github.com/canonical/dotnet-source-build/blob/main/docs/SRUTestPlan.md

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