DISCLAIMER: These notes are from the defunct k8 project which precedes SquirrelJME. The notes for SquirrelJME start on 2016/02/26! The k8 project was effectively a Java SE 8 operating system and as such all of the notes are in the context of that scope. That project is no longer my goal as SquirrelJME is the spiritual successor to it.
For the kernel compilation stage, instead of opening a single JAR at a time I can open up all of them at once and then proceed through all the contained files in them. I will need to handle assembly bits for classes that require native interfaces and such.
The code will be changed so that it only compiles what is needed by the kernel, that way no time is wasted compiling classes which do not need to be compiled to be linked into the kernel, unless said classes are explicitley selected. The way this will work is that the kernel main entry class will be compiled and any classes it depends on will also be compiled for inclusion. Anything which is statically referenced will be included so that the kernel is a pre-compiled virtual machine so to speak. If say the kernel is loadable but the filesystem is gone, a base system could still be worked with so to speak.