I don't know if it even humanly possible :p
Eclipse is composed of tens of sub-modules, and it's just for the core. Even after that, you have a tons of plugins to compile and implement. https://git.eclipse.org/c/
@ikey beat me to it. Third-Party is for closed source or non-redistributable software. Is Eclipse a pain in the butt to build? you bet. But it's also really easy to download and unpack if you need it locally.