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

[Eric Seidel]

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