Re: Merits and uses of static vs. dynamic libraries
SG wrote:
On 13 Apr., 08:28, Paavo Helde <pa...@nospam.please.ee> wrote:
Dynamic libraries are a later innovation, the biggest selling
point being the byte-saving both on disk and in memory as shared
libraries can be potentially shared by many applications at the
same time. OTOH, it becomes much more difficult to keep track the
versions and ensure that each application uses the right shared
libraries, these problems are often regarded as "the DLL hell" in
the Windows world. To avoid this, each application often uses its
own set of semi-standard DLL-s packaged together with the
application, thus negating most of any memory comsumption effect
which it might have had.
Another selling point would be IMHO:
You can update a shared library (i.e. bug fixes -- assuming binary
compatibility) without the need to recompile every application that
uses it.
And this is where "the DLL hell" starts. :-)
As some of the applications are only tested - and working - with the
older versions of the library, how do we know if they are also working
with the supposedly fixed version?
On the other hand, if the applications are statically linked to the
library, you will have to get a separate update for each of them, for
the same bug.
A catch-22, I guess.
Bo Persson
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