[ECOS] Auto initialisation of packages

Jonathan Larmour jlarmour@cygnus.co.uk
Thu Oct 28 05:46:00 GMT 1999

Jonathan Larmour wrote:
> Nope. That's not quite right. Said static object would not be included
> unless it is directly referenced from an object that the user in turn
> references from somewhere else in their program.
> Think about how you would get a reference to the "C library object" if the
> users program was just:

Ha! I talked myself round in circles - on the one hand I was saying that the
device driver approach referenced too many things, and on the other I was
saying it didn't reference enough.

After Bart knocked some sense into me, things are a bit clearer now - the
solutions have the same effect and overheads, they both cause initialization
iff the package is enabled - even in applications that don't use the
package's functionality.

The closest thing to a "solution" I could think of is to magically generate
a reference to the initialization object from each function and variable in
every object in the package. Even that wouldn't solve the particular
"main()" counterexample I mentioned. So the device driver approach *is* the
way to go.

So I'll pack my bags and go home now...


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