esp32/xtensa support

[xian]

Since #2268, Espressif has made a bunch of progress adding support for llvm for its very popular esp32 microcontroller. Would be awesome if kotlin-native had integrated support.

[olonho]

Shalln't be too hard to implement now, as K/N is purely bitcode at the moment. Tricky part could be fitting into size requirements, but DCE effort may help here as well.

[aran-arunakiri]

yes please

[JcMinarro]

Any news about it?

[Ic-ks]

@xian is there any documentation how to add a new platform target to kotlin-native? BTW espressifs llvm project was moved: https://github.com/espressif/llvm-project
I can't wait to see kotlin running on affordable embedded devices :)

[michaelbrylevskii]

Any news about it?

[SvyatoslavScherbina]

No news about it, at least from Kotlin team.

[napperley]

Stand a much higher chance of getting the Rasbperry Pi Pico supported by Kotlin Native as a target (eg rpiPico), which should be made a high priority. Already LLVM supports the ARM Cortex M0+ CPU.

[chris-hatton]

@napperley on point as usual 👌 good call on Pico as the KIoT outlet

[sbogolepov]

According to #4079, I'm closing this issue in favor of:

• KT-43974. There you can share your use-cases of a possible esp32/xtensa target.
• KT-44498. Raspberry Pi Pico-specific ticket.