[webkit-dev] Documentation for WTF/JSC exports?

Hajime Morrita morrita at chromium.org
Wed Mar 21 21:31:59 PDT 2012


Done: https://trac.webkit.org/wiki/ExportingSymbols
It doesn't looks this helps your WTF move though.

On Thu, Mar 22, 2012 at 10:38 AM, Eric Seidel <eric at webkit.org> wrote:
> Thank you.  Mark Rowe was kind enough to resolve
> https://bugs.webkit.org/show_bug.cgi?id=81838#c8 in
> http://trac.webkit.org/changeset/111634.
>
> I've found that some of the "Weak External Symbol" errors from
> http://pastebin.com/dVjV8UiR can be resolved by marking the functions
> in question as "inline", but that doesn't seem like the right fix.
>
> Some others like:
> ERROR: symbol double WTF::strtod<(WTF::AllowTrailingJunkTag)0,
> (WTF::AllowTrailingSpacesTag)0>(char const*, char**)
>
> Are for functions which are not even in headers:
> http://trac.webkit.org/browser/trunk/Source/JavaScriptCore/wtf/dtoa.cpp#L651
>
> So it's unclear what's causing those.
>
> Thank you for your attempts at documentation. Perhaps that will make
> clear how these exports are supposed to work. :)
>
> -eric
>
> On Wed, Mar 21, 2012 at 6:21 PM, Hajime Morrita <morrita at google.com> wrote:
>> I'll write a draft so that ports' expert can fill missing pieces.
>> --
>> morrita
>>
>> On Thu, Mar 22, 2012 at 9:49 AM, Eric Seidel <eric at webkit.org> wrote:
>>> Do we have any documentation for how the current symbol export system
>>> for WTF/JSC is supposed to work?
>>>
>>> I'm hitting errors when trying to move WTF files to their own libwtf.a, such as:
>>> https://bugs.webkit.org/show_bug.cgi?id=81838
>>> and
>>> http://pastebin.com/dVjV8UiR
>>>
>>> But looking at http://trac.webkit.org/browser/trunk/Source/JavaScriptCore/wtf/ExportMacros.h
>>>
>>> It appears most of those macros are never used!  (Like
>>> WTF_EXPORT_CLASS, for example.)
>>>
>>> So when trying to resolve errors such as:
>>> https://bugs.webkit.org/show_bug.cgi?id=81838#c8
>>>
>>> The path is unclear.
>>>
>>> Perhaps there is a wiki somewhere on how this system is supposed to work?
>>>
>>> -eric
>>> _______________________________________________
>>> webkit-dev mailing list
>>> webkit-dev at lists.webkit.org
>>> http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
>>
>>
>>
>> --
>> morrita


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