Re: [QUERY] Incremental dependencies

David L Moore <>
12 Jan 1997 11:50:12 -0500

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From: David L Moore <>
Newsgroups: comp.compilers
Date: 12 Jan 1997 11:50:12 -0500
Organization: Netcom
References: 97-01-056
Keywords: parse

John Lilley wrote:

> So I wonder: do any compilers/parsers, commercial or otherwise, make
> use of incremental or minimal dependency calculations.

Rational's Apex Ada compilers do incremental compilation. However,
code generation is always re-run, I believe for the entire file that
has changed.

These compilers use a permanent intermediate representation which
allow you to do nice things like ask "Where is this type used?" This
is great for impact analysis during maintenance. The incremental
compilation is from source into this intermediate form.

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