[swift-users] Swift Binary Size vs. Obj-C

[Marco S Hyman]

On Jun 15, 2016, at 5:37 PM, Seth Friedman via swift-users <swift-users at swift.org> wrote:
> 
> Does anyone know if the runtime libs definitively increased in size in Swift 3? I could have sworn I heard 4.5 MB for Swift 2.

The total of the Frameworks dir in a Swift 2.2 app I have is 5.8M.  The breakdown for this app is:

 64K	libswiftAppKit.dylib
4.8M	libswiftCore.dylib
 44K	libswiftCoreData.dylib
112K	libswiftCoreGraphics.dylib
 32K	libswiftCoreImage.dylib
 84K	libswiftDarwin.dylib
 40K	libswiftDispatch.dylib
516K	libswiftFoundation.dylib
 64K	libswiftObjectiveC.dylib
 48K	libswiftWebKit.dylib

So how big might partially depend upon what frameworks the app uses.  The same app in Swift 3 is 6.6M -- a little bit bigger.  It’s breakdown is:

 76K	libswiftAppKit.dylib
4.5M	libswiftCore.dylib
 44K	libswiftCoreData.dylib
116K	libswiftCoreGraphics.dylib
 36K	libswiftCoreImage.dylib
 68K	libswiftDarwin.dylib
 40K	libswiftDispatch.dylib
552K	libswiftFoundation.dylib
 36K	libswiftIOKit.dylib
 64K	libswiftObjectiveC.dylib
1.0M	libswiftSwiftOnoneSupport.dylib
 48K	libswiftWebKit.dylib
 36K	libswiftXPC.dylib

The Swift 3 version is a debug build, the swift 2.2 version isn’t.