Process of transitioning a project from a collection of classes to a .dylib?

I've been working on a pet project for a few weeks now, and starting to think that it may get used by myself and a few friends. At present, it's really just a pile of Objective-C classes in an XCode project with a main() I've been using to test various features. Going forward it seems easiest to use this library in projects if I package it up as .dylib file. As I've found with other languages, doing this as an afterthought is a nuisance that ideally is farmed out to the lowest rung. :)

I'm very new to the Objective-C/Xcode world, but according to Apple's "Dynamic Library Programming Topics", I'm under the impression that it's really just a matter of rejigging my interface files to be of the format:

@protocol Person
- (void)setName:(NSString*)name;
- (NSString*)name;
@end

@interface Person : NSObject <Person> {
    @private
NSString* _person_name;
}
@end

(taken from referenced Apple doc).

Where: I'm defining a protocol that contains the methods I wish to include for the classes to be contained in the .dylib, and then defining an interface that subclasses NSObject implementing the aforementioned protocol and declaring ivars in here.

A few questions:

Am I able to omit methods from the protocol that I don't wish to "EXPORT" to the dylib?

If I have subclasses of a class within the dylib, do I create another protocol for the subclass, and make the superclass of the newly created class implement that protocol? For instance, if I were subclassing person:

@protocol 开发者_如何学CCatPerson
/* any additional methods for CatPerson not in Person */
- (void) protractClaws;
- (void) retractClaws; 
@end

@interface CatPerson : Person <CatPerson> {
    @private
/* any additional ivars for CatPerson not in Person */
NSNumber *clawCount;
}

It's likely a very trivial question, but I'm trying to figure out everything I'll need to do before I go thru the gnashing of teeth of moving all the classes to a .dylib.

Project->New Target… select "dylib" in the panel that you get. Make it the current target. control-click on the groups & files tableview header, check "target membership". Check the boxes next to the files you want included in your dylib.