Soooo... thank you guys for the tips; I'm trying to recompile it now.
I do have enabled extras-devel but it is not working which is a bit odd, because BlessN900 do take pictures (it also depends on fcam-drivers) but fcamera, hdrcapture and lowlight just won't start. But BlessN900 freezes after taking the pics, soooo... I forgot that I have custom libc6 installed so that could be an issue... Sorry for not to mention it earlier...

Update1: it is succesfully compiled; I'm trying it now...

Update2: Fcamera app launches but shows grey window (after reboot of n900); I'll try to recompile fcamera itself...