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Re: GCC-HEAD [3.4] PCH and multiple header support?

From: Neil Booth <neil at daikokuya dot co dot uk>
To: Joe Buck <jbuck at synopsys dot com>
Cc: Shawn Starr <shawn dot starr at datawire dot net>, gcc at gcc dot gnu dot org
Date: Wed, 22 Jan 2003 21:58:24 +0000
Subject: Re: GCC-HEAD [3.4] PCH and multiple header support?
References: <200301221531.27601.shawn.starr@datawire.net> <20030122125207.A20329@synopsys.com>

Joe Buck wrote:-

> Unfortunately, the meaning of a header depends on what has been included
> before, or defined before.  In that sense, the only reusable unit that works
> reliably is the very first header.

I'm not sure what the current PCH implementation does, but if what you
say above is what is implemented, it is certainly possible to be a lot
more intelligent about it.

Existence proofs are the EDG, Borland and MS compilers.

I outlined the way I thought we should go in a mail in Dec 2000; I'm not
sure how different what we now do is to that.

Neil.

Follow-Ups:
- Re: GCC-HEAD [3.4] PCH and multiple header support?
  - From: Oscar Fuentes

References:
- GCC-HEAD [3.4] PCH and multiple header support?
  - From: Shawn Starr
- Re: GCC-HEAD [3.4] PCH and multiple header support?
  - From: Joe Buck

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