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From: hoffmann@infopls.chi.il.us (Robert Hoffmann)
Newsgroups: comp.lang.pascal
Subject: Re: Turbo pascal question on memory requirements
Message-ID: <L8Z6Z1w164w@infopls.chi.il.us>
Date: 10 Apr 91 01:48:32 GMT
References: <1991Apr6.150859.9694@bnlux1.bnl.gov>
Organization: INFOPLUS support, Wheeling, IL
Lines: 27

kushmer@bnlux1.bnl.gov (christopher kushmerick) writes:

> Now with an intelligent linking, I would think that this would not matter.
> Am I right.
 
Chris, although intelligent linking *will* create a smaller EXE file, 
while the code is being compiled, all of the memory required by all of 
the called units is needed.
 
To use your two examples:
 
1. USES only the actual units: the total memory of all units in the USES 
line is needed.
 
2. USES units which USE the actual units: the total memory of BOTH sets 
of USEd units will be needed during compilation.
 
In other words, it's much more effective to USE units as 
straightforwardly (without nesting) as possible.
 
To get a better idea, watch the "free memory" indicator in the Compile 
window while it's working.  You'll notice free memory decrease 
steadily... then *increase* as unnecessary functions are removed from 
memory (and the compiled EXE file).
 
Rob
(who has no signature, but can be reached at hoffmann@infopls.chi.il.us)