Problem with building a non-shareable QKDRIVER
Chris Sharman
Chris.Sharman@ccagroup.co.uk
Thu, 3 May 2001 11:33:58 +0100
> we are using PH 7.10F2 on Open VMS for Alpha 7.1.
> Because we are having some trouble with external routines (C-routines) we
> tried to build the QKDRIVER as non-shareable instead of shareable.
> We didn't manage to do that because after calling 'buildexternal' with the
> '/noshare' flag we get the following error:
Non-shareable won't work.
An image is either shareable or executable, and you can only run one executable
at a time (eg QUICKA710F.EXE) - the images it links to must be shareable.
Shareable images by definition don't (mustn't) have a main() program, just some
functions of global scope, declared as universal by a symbol_vector in the
linker options file.
I've never used buildexternal myself: I just link my own shareable images, and
I've never had any trouble.
In the past I've used ph_location:dalock.aobj (which I don't recommend).
I've run into conflict between VAXC & DECC. (I think DALOCK used to be VAXC).
I used to use the following in my linker options files:
sys$share:vaxcrtl/share
psect_attr=userbreak,noshr ! from DALOCK/VAXC
but no longer need it, apparently (710G3, Alpha VMS 7.1).
We're mostly Pascal here, rather than C, but we do have one DECC module I can
think of which we've successfully put into a QKDRIVER image & called from
Quick.
If you need more specific help, you'll have to more clearly describe your
problems.
Regards,
Chris Sharman
_______________________________________________________________________
Chris.Sharman@CCAgroup.co.uk http://www.ccagroup.co.uk/
CCA Stationery Ltd, Eastway, Fulwood, Preston, Lancashire, PR2 9WS.
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