Dynamic Libraries

Angelo Fraietta angelo_f at bigpond.com
Fri Nov 8 03:16:59 UTC 2002

This is exactly what I want to be able to do. I don't have to actually
do it right now, but if I can cite an example of someone who is actually
doing it, then the argument that an embedded instrument is not flexible
or upgradable easily and safely, is blown out of the water.

Paul Whitfield wrote:

 > Till Straumann wrote:
 >> Angelo Fraietta wrote:
 >>> Is it possible to create dynamic libraries for use within RTEMS,
 >>> similar to the way Windows uses DLLs?
 >> What exactly do you mean by dynamic libraries?
 >> Note that there is no point in having shared libraries in RTEMS.
 >> These objects make sense only when processes with different
 >> address spaces want to share code. RTEMS, since it is a hard RTOS
 >> must not use virtual memory - it has a flat memory address space
 >> shared among all threads in the system.
 >> When you load a simple old-fashioned "static" library into an
 >> RTEMS system it "automatically" becomes shared.
 > Actually there IS a point to having shared libraries if you
 > do not want to link all your applications together.
 > I.e. if you want to keep your application and libraries
 > separate so you can update or load them separately.
 > we have implemented a very basic shared library system. This
 > allows us to upgrade the system in a modular fashion and / or
 > change the functionality of the product by simply adding or removing
 > more modules.
 > However, our implementation is very specific to our product so I don't
 > think it would be generally useful.
 > Best regards
 > Paul

Angelo Fraietta

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Hamilton NSW 2303

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