[webkit-dev] A platform define for the Cocoa port?

Kevin Ollivier kevino at theolliviers.com
Wed Jun 28 12:22:21 PDT 2006

Hi Maciej,

On Jun 28, 2006, at 11:36 AM, Maciej Stachowiak wrote:

> On Jun 28, 2006, at 11:15 AM, Kevin Ollivier wrote:
>> Hi all,
>> While working on the wx port, I've noticed there are a number of  
>> places where there are __APPLE__ defines that will conflict with  
>> the wxWidgets port because wxWidgets uses Carbon and so the Cocoa  
>> defines, native data types, etc. aren't appropriate in this case.
>> What I was thinking is that we can add a PLATFORM(COCOA) define to  
>> Platform.h and define it when __OBJC__ and __APPLE__ are defined.  
>> Would this be an acceptable solution?  This would still cause  
>> conflicts with our wxCocoa port, but unfortunately development  
>> work on that port has stalled so IMHO the conflict is not a major  
>> issue at the moment. Eventually, if we do move to support wxCocoa,  
>> we could add some __BUILDING_WXCOCOA define and check for that in  
>> Platform.h before defining KXMLCORE_PLATFORM_COCOA.
>> Thoughts?
> The intent is that PLATFORM(DARWIN) means core MacOS system  
> facilities which would likely be used by any toolkit port on the  
> Mac, and PLATFORM(MAC) means Cocoa/Aqua UI (and other higher-level  
> Mac OS stuff). So PLATFORM(MAC) is intended to mean what you  
> suggest for PLATFORM(COCOA), we just haven't deployed it everywhere  
> yet.

But as I understand the code in Platform.h, platform Mac is defined  
whenever Darwin is defined, rather than being defined based on the  
toolkit used. Or do you mean that's what the define is supposed to be  
for, but that it is not currently correctly defined?

Also, IMHO this is a bit confusing in that I typically think of Mac  
as an OS name, not a "port/toolkit" name. I think it might get  
confusing when debugging and auditing code that on OS X, PLATFORM 
(MAC) would be false when building the wx port (for example). Just by  
reading the code, I would interpret it as "the Mac platform" which  
means to me Mac OS X, regardless of what toolkit I'm working with.  
Same with PLATFORM(WIN). Even though I know what they are supposed to  
mean, they naturally read to me as "Win OS" or "Mac OS" and I have to  
mentally correct myself whenever I read them.

If we want to keep the current naming system, what about having an OS 
(MAC) and PLATFORM(MAC) to differentiate? I think at this point every  
major OS has more than one WebKit "port" in progress for it, so I  
think we should differentiate port and OS as clearly as possible.



> Regards,
> Maciej

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