[ECOS] How best to create tags file for ecos source?

[Jeff Lasslett]

Greetings,

	I'm a vim user and I would really like to know the best
way to create ctags file(s) for the ecos source.  The problem is
that I don't want to create tags for the whole source tree because
it contains code for other platforms and it contains packages
that I may not build into my project.
	I have tried manually running ctags for each directory 
that I want tags for but I think the tags file gets too big and 
vim takes forever to jump to a tagged item.

	If anyone has any advice for regarding this I would
appreciate it.

cheers,
	Jeff