You need conditional compilation.
Called “Active Compilation Conditions” in the build settings.
For example define a ACC of “USE_LOGGING”
Then in your code:
#if USE_LOGGING
import Logging
#else
struct Logging {
func debug(message: string) {}
}
#endif
Regards,
Rien
Site: http://balancingrock.nl
Blog: http://swiftrien.blogspot.com
Github: http://github.com/Balancingrock
Project: http://swiftfire.nl
> On 06 Mar 2017, at 17:26, Jakub Bednář via swift-users
> <swift-users@swift.org> wrote:
>
> Hello everyone,
>
> I am trying to add optional logging into my framework, but for sake of this
> question, lets assume I want to add optional logging into an app. I have
> created an example with following setup:
>
> 1. Logging.framework declares
>
> public protocol Logging {
> func debug(message: String)
> }
>
> and I have build the framework for the app to see it.
>
> 2. Application has
>
> import Logging
>
> public class Engine {
>
> let logger: Logging?
>
> public init(withLogger logger: Logging? = nil) {
> self.logger = logger
> }
>
> public work() {
> self.logger?.debug(“Working”)
> }
> }
>
> Now I don’t have the Logging.framework in Embed Binaries nor Link Frameworks
> lists. My app builds ok, but then fails to start telling me that
> Logging.framework was not loaded. I checked the binary using otool -L and
> Logging.framework is still referenced by the binary. Is there any way how to
> achieve my goal? This would be trivial with Objective-C and I still can’t
> figure it out in Swift.
>
> Thanks a lot,
>
> J.
>
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