Future of asm.js support

[キャロウ マーク]

I have just received a request to one of my projects to support compiling to asm.js ("as a fallback for use cases where WebAssembly isn't available, for example, if a user is required to use Internet Explorer 11”). Currently the project’s CMake set up only supports compiling to wasm. How much longer will Emscripten continue to support asm.js builds? If there isn’t much future then it is probably not worth adding support in my project.

Regards

    -Mark

[Alon Zakai]

We plan to support non-wasm output for a very long time - it's useful for multiple reasons, including that it can run in old browsers like IE11.

Building with -s WASM=0 is how to do that. Note that it's not asm.js - it is JavaScript that is similar to asm.js, but not identical (as wasm gains more features, they become impractical to compile to asm.js which was pretty strict).

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