i know how to do this in c or cpp but with gambas ??? no idea  

I think you just reference each library in the other library's list.

See my post: Captain Bodgit: Gambas: using external Gambas libraries

 no because they can't compile …

lib A uses libB.job() … and lib B uses libA.job()

so i cant compile lib A to reference within lib B and i cant compile lib B to reference within lib A

PJBlack said

no because they can't compile …

Can you give me a code example, so I don't have to write my own.

One other point; deliberately creating 2 libraries that are mutually dependent upon one another is a bad idea.

See also: Circular dependency - Wikipedia

stevedee said

bad idea

my build in mr monk says it's a brilliant idea … but yes i think you're right and i will thinking about redesigning that stuff.

thanks for your help so far!