[webkit-dev] Exporting symbols (was Re: Common build system (was Re: WebKit Wishes))

Darin Fisher darin at chromium.org
Thu Jan 31 17:28:48 PST 2013

It would be nice if, in the shared library build of chromium, webcore and
perhaps the modules and platform were separate DLLs.
On Jan 31, 2013 4:15 PM, "Eric Seidel" <eric at webkit.org> wrote:

> I believe that it's a design mistake for WebCore to need to know
> anything about it's embedder, more than that there is a defined set of
> platform APIs and callbacks which it talks to (which should be the
> exact same for every embedder).
> (The export dependency dates back to the WebCore/WebKit separation,
> which in my recollection was done largely to be able to isolate LGPL
> code from the non-LGPL Mac WebKit layer.)
> But I believe it is a mistake that WebCore changes need to care about
> the possibility that different ports may export functions differently,
> or even worse, that different ports may need a different set of
> functions exported.
> I don't recommend using a more complicated export macro, but rather
> finding ways that WebCore doesn't need to care about diverging sets of
> exports.
> I believe most ports (with the exception of AppleWin/AppleMac) do not
> build WebCore as a separate dynamic library from WebKit, which makes
> exports a non-concern in the static case.
> In my perfect future world, WebCore would be split into many static
> libraries, and core-code -> WebKit exports would be a non-issue.  And
> of course, no embedder of core-code would ever expose core types, so
> no exports would ever need to be marked.
> On Thu, Jan 31, 2013 at 3:38 PM, Alexey Proskuryakov <ap at webkit.org>
> wrote:
> >
> > 31.01.2013, в 15:15, Dirk Pranke <dpranke at chromium.org> написал(а):
> >
> >>> I don't have concrete examples, and I don't know how big an effect on
> performance increasing the number of exports would have. It's something to
> keep an eye on, not a reason to avoid trying.
> >>
> >> I'm not parsing your reply properly -- avoid trying what? A common
> >> EXPORT macro that is set as appropriate by each port?
> >
> > Yes, you are parsing it correctly :)
> >
> > - WBR, Alexey Proskuryakov
> >
> >
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