Mac OS X 10.5

[Anders F Bjöšrklund]

Carlos Santander wrote:

> I don't know what -isysroot is; 
> I remember seeing it somewhere, but I don't think I've missed it. And I 
> don't know what you mean by supporting the SDKs.

SDKs are what Apple use to support cross-developing between OS releases.
http://developer.apple.com/documentation/DeveloperTools/Conceptual/cross_development/

It also supports cross-compiling between the architectures, in order to
make Universal Binaries but I'm sure you were aware of that already...

--anders