I have a working fpcupdeluxe, but nothing for other people.
One goal is, stm32 and esp8266 cannot actual work at the same time in fpc out of the box. If you create one, you overwrite the other, without manual work.
The correct crossbin and libs should exists for fpcupdeluxe. The target 4.x is comming

And i have to test all with your samples in Lazarus.