[Webkit-unassigned] [Bug 117708] touching any idl rebuilds all derived sources

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=117708





--- Comment #18 from Maciej Stachowiak <mjs at apple.com>  2013-06-21 16:56:21 PST ---
(In reply to comment #16)
> (In reply to comment #15)
> > After touching an idl without making functional changes (such as editing a comment), the preprocessor still runs every time you compile.
> 
> This is expected. To resolve dependency of 'partial', 'implements' and [NoInterfaceObject], we cannot avoid scanning all IDL files when any IDL file is touched. In my local experiment with SSD, the time spent in the preprocessor is very small (less than 1 sec).

I don't see how this can be true for those features when it turned out not to be true for supplemental interfaces. How is partial different from supplements in that regard?

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