The makefiles have a few places where .o files are re-used, or rebuilt repeatedly, and one case where a archive library is wanted (fddlibm).

The makefiles need to support the idea of an archive library component, and fix this logic. Re-compiling a bunch of sources everytime an executable is wanted is silly, and sneaking over to another directory and using another components .o file is risky.

Object files that need to be shared should be put in an archive library.
The java executables built also repeatedly re-compile zip files for the executables it creates, these .o files should be put in an archive library and not repeatedly built.