Thanks for the reply.
I didn't, yet, watch the full video (just portions of it) - I will fully watch that to understand more.
I did see this link before. Unfortunately, that doesn't seems to be 'true' Linux cross platform compilation.
It uses several RPi features, such as I2C - but these are embedded within different components,.
The solution seems to be Web oriented (even just by it's naming -- that is it's purpose).. not Linux 'true' Kernal compilation or GTK (for the GUI) use.
It doesn't enable any use of the wide FMX abilities... and has it's own limited components (AFAIK) to label information on a Web Form..
In addition I am not sure how widely (if at all) it'll enable me to link to the so called, compiled product any additional Linux .so libraries, for use.
But again, I don't know all the features of this solution, this is just a brief observation.
I fail to understand fully. why Cross compilation is available for Windows-ARM, MacOS, and Linux x64.. but isn't available yet for Linux-ARM.