Re: dynamic libraries location

[Ralph Lange <Ralph.Lange@bessy.de>]

Well ... generally spoken ...

the binary should find a library that matches the header files it was 
compiled against. It's not exactly important where that library is 
located, but the search path mechanisms for finding dynamic libraries 
(which heavily depend on the operating system) must be set up correctly 
to avoid the binary finding a wrong version.

There's a place within the EPICS configuration directories where you can 
set up the default search path that is compiled into the binaries. (The 
App Developer's should mention that somewhere.) Most operating systems 
allow for adding and/or overriding these paths through environment 
variables. Again, the exact way to do that depends on your OS.

The behavior of a library doesn't change with its location. Your binary 
probably finds a different library of the same name whose location is 
mentioned earlier in the search path list.

Hope this helps,
Ralph


Christophe Moins wrote:

> Hi,
>
> Would someone know if there is any requirement concerning the use of 
> dynamic libraries in an epics application ?
> Should they be located in the lib/target directory of the epics base 
> directory or can we use also libraries located in the /usr/local/lib ?
> I ask this as I  have not had the same behaviour of a library 
> according to the directory where it was stored.
>
>
> Thanks
> Christophe