User forums > Using Code::Blocks
inherit static library dependencies
zabzonk:
--- Quote --- does this mean my userProg depends on both my own "userLib" and the sdk library?
--- End quote ---
Yes. Your project is dependent on both the userLib and SDK libraries and headers. The userLib is dependent on the SDK headers, but not on the SDK library.
das-d:
ok with shared librarys this behaviour is different I guess?
What I never found out yet, sorry I'm new to deep c programming and bigger projects, is a shared library loaded once or twice in target system if two applications running using it. What I mean is if I have some sort of init stuff that should be used seperate by each application for example. Does Application A sees the "initialized" library if Application B that uses the same shared library have already executed the init sequence?
Edit: One of my books says: "dynamic librarys use all the same code, they are loaded only once". That means they share any values of their variables also, correct?
Sorry if this is a stupid question!
BR daniel
zabzonk:
@das-d
This is getting off-topic, but yes, shared libraries and DLLs are different - they are much more like executables than static libraries, and they _do_ link with their dependent libraries, or at least with the dependent libraries import libs.
--- Quote ---That means they share any values of their variables also, correct?
--- End quote ---
Nope. By default, each loaded instance of a shared library shares code, but gets its own data segment. If two applications use the same shared library, they do not share data.
das-d:
Thanks for reply to offtopic!
You have really helped me, now I can decide if shared or static librarys are better in my case.
BR Daniel
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