Compile error after trying on Arduino IDE 2.3.4

[al-davis]

Mature project based on stuff from here compiles fine with Arduino IDE 1.8 but IDE 2.3.4 has a problem with function call lltoa(...) from audio.cpp on both Linux and Win 10 machines. I can likely find and insert a library that supports that call but I doubt that's going to be the proper solution. IDE 2.3.4 is successfully finding and using other libraries that where loaded for IDE 1.8. I suspect I need to load some library stream that includes other function calls to solve issues I have not yet discovered. In hopes of shortening that journey I ask here first.

[al-davis]

Issue solved after updating all board definitions and libraries, seems IDE 2.x is much more fussy about such things.