Are there people who work full time on esp8266/Arduino, or is it entirely a part-time/volunteer effort?
Also if ESP8266 core is LGPL, I assume that everything depending on esp8266/Arduino must be made open source under LGPL or another compatible license, correct? That is, it'd seem there's likely no way to dynamically link to only that component
but providing object files fulfils the LPGL requirement for being able to relink the binary with newer versions of the COre.
It's only needed to open the source when you're distributing your code. If you keep it private you don't have to do anything.
@bertmelis no need to provide source code even when distributeing
it is LGPL and not GPL
yeah, you "need to do everything that enables the user to replace/improve/... the LGPL code"
if you hand over the object files and build script together with the binary all is good.