ARMToolChainSelection

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Revision 1 as of 2010-04-27 15:21:47
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 * '''Packages affected''':  * '''Packages affected''': gcc, gdb, binutils, eglibc (others TBD)
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This should provide an overview of the issue/functionality/change proposed here. Focus here on what will actually be DONE, summarising that so that other people don't have to read the whole spec. See also CategorySpec for examples. We need to choose the version of each of the major tools needed for building Maverick on ARM.
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This should cover the _why_: why is this change being proposed, what justifies it, where we see this justified.
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There have been many improvements to the ARM tools in the last few months, so although, for example, GCC 4.4 is now quite stable, it is lacking a number of new and important features (tuning for Cortex-A9 Hard-float ABI etc). Switching to GCC 4.5 would look like a useful step forward, but this is still an early release. Are we happy with the risk that might imply? or should we be conservative?

Other tools we should consider during this session are GDB, binutils and eglibc.

Summary

We need to choose the version of each of the major tools needed for building Maverick on ARM.

Release Note

This section should include a paragraph describing the end-user impact of this change. It is meant to be included in the release notes of the first release in which it is implemented. (Not all of these will actually be included in the release notes, at the release manager's discretion; but writing them is a useful exercise.)

It is mandatory.

Rationale

User stories

There have been many improvements to the ARM tools in the last few months, so although, for example, GCC 4.4 is now quite stable, it is lacking a number of new and important features (tuning for Cortex-A9 Hard-float ABI etc). Switching to GCC 4.5 would look like a useful step forward, but this is still an early release. Are we happy with the risk that might imply? or should we be conservative?

Other tools we should consider during this session are GDB, binutils and eglibc.

Assumptions

Design

You can have subsections that better describe specific parts of the issue.

Implementation

This section should describe a plan of action (the "how") to implement the changes discussed. Could include subsections like:

UI Changes

Should cover changes required to the UI, or specific UI that is required to implement this

Code Changes

Code changes should include an overview of what needs to change, and in some cases even the specific details.

Migration

Include:

  • data migration, if any
  • redirects from old URLs to new ones, if any
  • how users will be pointed to the new way of doing things, if necessary.

Test/Demo Plan

It's important that we are able to test new features, and demonstrate them to users. Use this section to describe a short plan that anybody can follow that demonstrates the feature is working. This can then be used during testing, and to show off after release. Please add an entry to http://testcases.qa.ubuntu.com/Coverage/NewFeatures for tracking test coverage.

This need not be added or completed until the specification is nearing beta.

Unresolved issues

This should highlight any issues that should be addressed in further specifications, and not problems with the specification itself; since any specification with problems cannot be approved.

BoF agenda and discussion

Use this section to take notes during the BoF; if you keep it in the approved spec, use it for summarising what was discussed and note any options that were rejected.


CategorySpec

Specs/M/ARMToolChainSelection (last edited 2010-05-28 16:47:39 by richard-earnshaw)