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Feature request (build): enable engine builds optimized for size #176685

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#176835
Closed
Feature request (build): enable engine builds optimized for size#176685
#176835
Labels
P2Important issues not at the top of the work lista: buildBuilding flutter applications with the toolc: new featureNothing broken; request for a new capabilityc: proposalA detailed proposal for a change to Flutterengineflutter/engine related. See also e: labels.team-engineOwned by Engine teamtriaged-engineTriaged by Engine team

Description

@planetmarshall
planetmarshall
opened on Oct 8, 2025

Use case

As a developer targeting embedded devices, I wish to build the flutter engine optimized for size rather than speed as it is advantageous on some platforms to reduce the binary footprint as much as possible.

Proposal

Add a flag to the engine/src/flutter/tools/gn tool to enable size optimizations, eg

/engine/src/flutter/tools/gn --optimize-for-size

The flags --optimize-for-size and --unoptimized should probably be mutually exclusive

Activity

  1. darshankawar
    added
    in triagePresently being triaged by the triage team
    c: proposalA detailed proposal for a change to Flutter
    c: new featureNothing broken; request for a new capability
    a: buildBuilding flutter applications with the tool
    engineflutter/engine related. See also e: labels.
    team-toolOwned by Flutter Tool team
    fyi-engineFor the attention of Engine team
    and removed
    in triagePresently being triaged by the triage team
    on Oct 8, 2025
  2. chinmaygarde
    added
    P2Important issues not at the top of the work list
    team-engineOwned by Engine team
    triaged-engineTriaged by Engine team
    and removed
    team-toolOwned by Flutter Tool team
    fyi-engineFor the attention of Engine team
    on Oct 13, 2025
  3. github-merge-queue
    added a commit that references this issue on Oct 27, 2025

    add gn flag to optimize builds for size (#176835)

    e0ff789
  4. auto-submit
    closed this as completedin #176835on Oct 27, 2025
  5. flutter-zl
    added a commit that references this issue on Oct 31, 2025

    add gn flag to optimize builds for size (#176835)

    05f4372

  6. github-actions commented on Nov 10, 2025

    @github-actions
    github-actionsbot
    on Nov 10, 2025 – with GitHub Actions

    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

  7. github-actions
    locked as resolved and limited conversation to collaborators on Nov 10, 2025
  8. reidbaker
    added a commit that references this issue on Dec 10, 2025

    add gn flag to optimize builds for size (flutter#176835)

    8e17364
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    P2Important issues not at the top of the work lista: buildBuilding flutter applications with the toolc: new featureNothing broken; request for a new capabilityc: proposalA detailed proposal for a change to Flutterengineflutter/engine related. See also e: labels.team-engineOwned by Engine teamtriaged-engineTriaged by Engine team

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