Build times are very long when building for WebGL

Unity: Web Platform

Won't Fix

2023.2.X

2023.1.X

2022.2.X

2022.2.0a16 onwards

Upgrading version of emscripten resulted in longer build times when performing Release builds. Currently unable to identify a regression in build times after that change was made. If this is impacting you please add a comment on this issue or add additional details in the existing forum thread here: https://forum.unity.com/threads/webgl-build-linking-build-js-wasm-takes-forever.1315203/

Reproduction steps:
1. Open the attached "repro_IN-36000SlowBuild.zip" project
2. Open File -> Build Settings
3. Select "WebGL" and press "Build And Run"
4. Wait for the build to finish

Expected result: The build finishes in around 5 minutes
Actual result: The build finishes in around 12 minutes

Reproducible with: 2022.2.0a16, 2022.2.12f1, 2023.1.0b9, 2023.2.0a7
Not reproducible with: 2020.3.46f1, 2021.3.21f1, 2022.2.0a15

Reproducible on: Windows 10, macOS 13.2.1 (M1) (by the reporter)

Build times are very long when building for WebGL

Unity: Web Platform

Won't Fix

Prioritise and Follow this issue

Have a workaround or additional info about this issue?

Build times are very long when building for WebGL

Unity: Web Platform

Statuses

Won't Fix

Resolution Notes

Description

Prioritise and Follow this issue

Have a workaround or additional info about this issue?