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John Dallman, Sam Clegg9

Jul 20

Emscripten 6.0.2 still has Node.js 22.16.0

Thanks, that's clear now. John On Fri, Jul 17, 2026 at 7:13 PM 'Sam Clegg' via emscripten

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Emscripten 6.0.2 still has Node.js 22.16.0

Thanks, that's clear now. John On Fri, Jul 17, 2026 at 7:13 PM 'Sam Clegg' via emscripten

Jul 20

Guy Bedford, … Thomas Lively5

Jul 16

Supporting Emscripten on Tokio

I wanted to give a brief follow-up on this topic. The first few Emscripten PRs are now up for review,

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Supporting Emscripten on Tokio

I wanted to give a brief follow-up on this topic. The first few Emscripten PRs are now up for review,

Jul 16

Jul 16

[RFC] Removal of the SOCKET_WEBRTC setting

See https://github.com/emscripten-core/emscripten/issues/27366 If you are using this setting please

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[RFC] Removal of the SOCKET_WEBRTC setting

See https://github.com/emscripten-core/emscripten/issues/27366 If you are using this setting please

Jul 16

John Dallman, Sam Clegg3

Jul 16

Ways of debugging WebAssembly code running within Node.js?

OK, I'll direct people with normal vision to some claimed solutions for debugging in Node with

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Ways of debugging WebAssembly code running within Node.js?

OK, I'll direct people with normal vision to some claimed solutions for debugging in Node with

Jul 16

Jul 13

[PSA] Emscripten 6.0.3 released

Details at https://github.com/emscripten-core/emscripten/releases/tag/6.0.3

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[PSA] Emscripten 6.0.3 released

Details at https://github.com/emscripten-core/emscripten/releases/tag/6.0.3

Jul 13

Jul 10

[PSA] Emscripten test suite now runs against a pinned emsdk version

This is a PSA for emscripten developers only. You can stop reading now if you don't work on

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[PSA] Emscripten test suite now runs against a pinned emsdk version

This is a PSA for emscripten developers only. You can stop reading now if you don't work on

Jul 10

Sam Clegg, … Mike7

Jul 10

[PSA] Moving away from .bat files on Windows

On Fri, Jul 10, 2026 at 11:36 AM Mike <sep...@gmail.com> wrote: I would say if the exe files

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[PSA] Moving away from .bat files on Windows

On Fri, Jul 10, 2026 at 11:36 AM Mike <sep...@gmail.com> wrote: I would say if the exe files

Jul 10

Kveon Lichman, … Sam Clegg12

Jul 8

WASMFS socket backend and WISP

On Tue, Jul 7, 2026 at 2:08 PM Kveon Lichman <kveo...@gmail.com> wrote: Yes, emscripten seems

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WASMFS socket backend and WISP

On Tue, Jul 7, 2026 at 2:08 PM Kveon Lichman <kveo...@gmail.com> wrote: Yes, emscripten seems

Jul 8

Phil Endecott, … Mike7

Jul 5

Changing shell.html without re-linking everything?

of course just use a different file to load the javascript glue file that is generated instead. the

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Changing shell.html without re-linking everything?

of course just use a different file to load the javascript glue file that is generated instead. the

Jul 5

Jun 22

[PSA] Emscripten 6.0.1 released

Continuing the experiment of using github releases. Details at https://github.com/emscripten-core/

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[PSA] Emscripten 6.0.1 released

Continuing the experiment of using github releases. Details at https://github.com/emscripten-core/

Jun 22

Александр Гурьянов, Sam Clegg8

Jun 17

UT99/emscripten Mutliplayer

Breakdown video: https://youtu.be/7NJIcI2ajgw сб, 15 нояб. 2025 г. в 12:04, Александр Гурьянов <

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UT99/emscripten Mutliplayer

Breakdown video: https://youtu.be/7NJIcI2ajgw сб, 15 нояб. 2025 г. в 12:04, Александр Гурьянов <

Jun 17

Jun 9

[PSA] Emscripten 6.0.0 released

Windows users, I'm particularly interested in how the new `.exe` launcher files are working out.

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[PSA] Emscripten 6.0.0 released

Windows users, I'm particularly interested in how the new `.exe` launcher files are working out.

Jun 9

John Dallman, … Alon Zakai5

Jun 4

SINGLE_FILE: Is there a way to look at the wasm embedded in the .js file?

Strings definitely show up in the wasm binary, like they do in normal binaries. But function names

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SINGLE_FILE: Is there a way to look at the wasm embedded in the .js file?

Strings definitely show up in the wasm binary, like they do in normal binaries. But function names

Jun 4

John Dallman, Sam Clegg3

May 26

Dynamic Linking questions

Thanks, I will do some trials and discuss the trade-offs with my management. John On Fri, May 22,

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Dynamic Linking questions

Thanks, I will do some trials and discuss the trade-offs with my management. John On Fri, May 22,

May 26

May 20

PSA: Change in default behaviour `-shared`

Historically, emscripten has always produced fake dynamic libraries when the `-shared` flag was used.

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PSA: Change in default behaviour `-shared`

Historically, emscripten has always produced fake dynamic libraries when the `-shared` flag was used.

May 20

John Dallman, Alon Zakai3

May 20

EMULATE_FUNCTION_POINTER_CASTS and max-func-params

> Interesting, this means that your codebase has functions with 26 parameters, I'll believe

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EMULATE_FUNCTION_POINTER_CASTS and max-func-params

> Interesting, this means that your codebase has functions with 26 parameters, I'll believe

May 20

May 15

Suggestion: Clang warning specific to WebAssembly function signature matching

The codebase I'm porting to WebAssembly is mostly C, rather than C++, and parts of it are decades

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Suggestion: Clang warning specific to WebAssembly function signature matching

The codebase I'm porting to WebAssembly is mostly C, rather than C++, and parts of it are decades

May 15

Sam Clegg, Brooke Vibber5

Apr 30

[RFC] Dropping support for older browsers

OK, the PR for this is getting closer to landing: https://github.com/emscripten-core/emscripten/pull/

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[RFC] Dropping support for older browsers

OK, the PR for this is getting closer to landing: https://github.com/emscripten-core/emscripten/pull/

Apr 30

Thomas Grund, Sam Clegg3

Apr 25

Handling of while(Runnning) loops

Thanks for clarifying, that helps! Best, Thomas s...@google.com schrieb am Freitag, 24. April 2026 um

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Handling of while(Runnning) loops

Thanks for clarifying, that helps! Best, Thomas s...@google.com schrieb am Freitag, 24. April 2026 um

Apr 25

John Dallman, Alon Zakai5

Apr 10

Enhancement request for "RuntimeError: null function or function signature mismatch"

Good idea, we'll add mention of that flag here: https://github.com/emscripten-core/emscripten/

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Enhancement request for "RuntimeError: null function or function signature mismatch"

Good idea, we'll add mention of that flag here: https://github.com/emscripten-core/emscripten/

Apr 10

Sam Clegg, John Dallman4

Apr 10

[PSA] Plan to remove DETERMINISTIC setting

> BTW are you actually using this setting yourself? Not at present, but I can't rule out using

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[PSA] Plan to remove DETERMINISTIC setting

> BTW are you actually using this setting yourself? Not at present, but I can't rule out using

Apr 10

Apr 2

[RFC] Bumping the minimum supported version of Node from v12 to v18

Hi all, I'm considering bumping the minimum supported version of node (that emscripten can

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[RFC] Bumping the minimum supported version of Node from v12 to v18

Hi all, I'm considering bumping the minimum supported version of node (that emscripten can

Apr 2

leopatras, … Alon Zakai6

Feb 23

sqlite: SQL code runs slower on each iteration in Chrome if ASYNCIFY and IDBFS are used

> IDBFS seems to show only spikes of activity with big pauses in-between IDBFS is async - that

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sqlite: SQL code runs slower on each iteration in Chrome if ASYNCIFY and IDBFS are used

> IDBFS seems to show only spikes of activity with big pauses in-between IDBFS is async - that

Feb 23

John Dallman, Sam Clegg3

Feb 16

Forwards/backwards compatibility between Emscripten versions?

OK, that makes sense. Thanks, John On Mon, Feb 16, 2026 at 1:31 AM 'Sam Clegg' via emscripten

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Forwards/backwards compatibility between Emscripten versions?

OK, that makes sense. Thanks, John On Mon, Feb 16, 2026 at 1:31 AM 'Sam Clegg' via emscripten

Feb 16

John Dallman, Sam Clegg5

Feb 11

Is there a published support lifecycle for Emscripten?

On Tue, Feb 10, 2026 at 6:46 PM 'Sam Clegg' via emscripten-discuss <emscripten-discuss@

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Is there a published support lifecycle for Emscripten?

On Tue, Feb 10, 2026 at 6:46 PM 'Sam Clegg' via emscripten-discuss <emscripten-discuss@

Feb 11

Jan 26

[PSA] emscripten 5.0

Hi all, We just released emscripten 5.0. Mostly by coincidence it's the first release of the new

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[PSA] emscripten 5.0

Hi all, We just released emscripten 5.0. Mostly by coincidence it's the first release of the new

Jan 26

leopatras, Sam Clegg3

Jan 26

emcc: compiling with fsanitize=address and async function raises compile error

Thanks Sam, I tried your workaround ,but it just adds some underscores to the error error: undefined

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emcc: compiling with fsanitize=address and async function raises compile error

Thanks Sam, I tried your workaround ,but it just adds some underscores to the error error: undefined

Jan 26

Sahil Gautam, Sam Clegg7

12/15/25

--preload-file doesn't work when passed to target_link_options in cmake

that's much better, thanks! On Tuesday, December 16, 2025 at 2:10:25 AM UTC+5:30 s...@google.com

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--preload-file doesn't work when passed to target_link_options in cmake

that's much better, thanks! On Tuesday, December 16, 2025 at 2:10:25 AM UTC+5:30 s...@google.com

12/15/25

chris goyette, … Brooke Vibber5

12/10/25

Any deep-dive learning resources for Emscripten?

On Wed, Dec 10, 2025 at 8:38 AM chris goyette <chrisgoy...@gmail.com> wrote: What I do not

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Any deep-dive learning resources for Emscripten?

On Wed, Dec 10, 2025 at 8:38 AM chris goyette <chrisgoy...@gmail.com> wrote: What I do not

12/10/25

Александр Гурьянов, Brendan Dahl2

12/3/25

Replacing Asyncify with JSPI (js-dos / dosbox)

It looks like the wasm entry function is missing it's JSPI wrapper. You should add `SHELL_Init` (

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Replacing Asyncify with JSPI (js-dos / dosbox)

It looks like the wasm entry function is missing it's JSPI wrapper. You should add `SHELL_Init` (

12/3/25

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