On Feb 9, 2012, at 12:17 AM, Robert Purves wrote:

> 
> Brian S wrote:
> 
>> SVanVoorst wrote:
>> 
>>> Please excuse my ignorance, but if FB has some QuickDraw code and Lion took away the headers, how does it even run in 10.7?
>> FB only needs the QuickDraw headers for linking and since we link against 10.5 libraries the QuickDraw headers are there. The headers ( .h files ) are missing in Lion. 
> 
> To be pedantic, headers are used in compilation only. Linking is a later step.
> 
> In Lion, unless you smuggle in an old Xcode 3 developer folder, every app that FB makes is built against /Developer/SDKs/MacOSX10.6.sdk. This SDK contains full QuickDraw headers.
> 
>> Execution is a different matter. The QuickDraw framework( which is separate and different from the headers ) DOES exist in Lion, so therefore execution works.
> 
> Again to be pedantic, the headers exist inside the framework, along with the executable library code.

No problem. Precision is good. Hopefully the situation is clear for Steve.



Brian S