Koreader support on newer kindle firmwares with hard floats?

[arooni]

Asked this question on mobileread:

Is there typically ever an ability to upgrade firmware without losing the jailbreak? I prefer having koreader and the jailbreak compared to the newer scribe notebook features in 5.16.5 so perhaps it's a moot point. But should I make the assumption that upgrading the firmware means losing the jailbreak ? If so, I should kiss the idea of an upgrade goodbye and stop reading about the new firmware updates lol.

I think the notebook features are good enough for me currently to use for the foreseeable future but who doesn't like shiny new things ? Lol

And got this answer;

I repeat: upgrading past 5.16.2 is NOT the end of the JB, it can be restored. HOWEVER, nothing works properly on these firmwares, because Amazon switched their compiling backend mechanism (from softfloats to hardfloats), meaning that currently compiled code in KOReader and all packages won’t work with 99% chance. Unless developers are willing to widely support this new architecture (which I doubt), you can’t have everything at once.

I assume there is never going to be support for this hardfloat architecture in later firmwares on Kindle?

[NiLuJe]

Not for a while, no.

[Frenzie]

Though I'll briefly point out there are various armhf binaries that aren't guaranteed not to work xp

[NiLuJe]

More to the point is that a JB is useless on those FW versions, because nothing is built for it, so nothing works. KOReader would be the least of your problems ;).

[Frenzie]

Well yes, that would be a bit of an obstacle. 🤣

[Commodore64user]

are we there yet?

[mergen3107]

because nothing is built for it

@NiLuJe
Do you mean by this, for example, USBnetwork and its whole bin folder? :D

Any hints where I can start looking for recompile?

[shamanNS]

@mergen3107

Any hints where I can start looking for recompile?

Maaaybe look here:

notmarek/koxtoolchain@0f47e4b
https://github.com/notmarek/crosstool-ng/tree/58e622ba27a43c119eaf3ac3ddf2f703bc7ba465

@notmarek

[mergen3107]

Interesting! Thank you!

[notmarek]

just so you are aware i wasnt able to compile koreader with the toolchain i have however had success with fbink and gandalf :)