...

I don't have to recompile the whole openldap, compiling the module is sufficient?

(1) we think about a subscription from symas ...

Correct. Any distributor (symas included) should include a development package that allows the ability to rebuild a module without rebuilding everything.

Ah, ok - it works :-D If I use a own compiled module and I bought a gold subscription, does Symas still give full support?

Thanks Meike