[exim-dev] Questions about: build, api docs and multiinstanc…

Hi,

Iam know exim from a few standard setups (nothing special) so iam
informed about the manpages and user manuals, but where can i find the
developer infos?
(build instructions, os specs, dependecies, api infos)

Iam asked this question on the userlist allready but maybe its a more
dev/architecture specific question:
Q: Is exim4 allready multiinstance (parallel ques, parallel configfiles,
parallel mta instances without using virtualization technology like
vmware, kvm, jails) capable?

Thanks,
Dave