sDEMANGLE_SUPPORT=1 no longer supported

[borjaevo]

This error is happening to me when trying to build OpenCV JS. I am missing something?

[kripken]

That flag was deprecated here:

https://github.com/emscripten-core/emscripten/blob/main/ChangeLog.md#3154---021524

And removed here:

https://github.com/emscripten-core/emscripten/blob/main/ChangeLog.md#406---032625

See notes there for the reasons and workarounds.

[kripken]

If those are not good enough, what is the use case you need the flag for? We were not aware of a good reason to keep it, but we might have missed something.

[sbc100]

Hopefully we can simply remove this flag from the OpenCV build?

[borjaevo]

If those are not good enough, what is the use case you need the flag for? We were not aware of a good reason to keep it, but we might have missed something.

I'm trying to build opencv js latest version following the official docs and the flag is activated by default somewhere. I'll try to find it and disable it because i think i don't needed.

[def-roth]

For anyone arriving here.
As of now you have to remove Line 74 in opencv/modules/js/CMakeLists.txt

set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s EXPORT_NAME=\"'cv'\" -s DEMANGLE_SUPPORT=1")

with the flag unset the build works again.