[Linphone-developers] Framework not found Pods_linphoneExtension issue

[Stealthspeaker]

Hello,

I am new to the linphone ecosystem and not really mature in iOS 
development. I tried to compile the linphone-iphone App on my MacBook 
Pro running Mojave 10.14.5 with Xcode 10.2.1 and run in target 
linphoneExtension into a linker error: Framework not found 
Pods_linphoneExtension

I just cloned (tag beat 4.2) and installed pods like:

git clone https://gitlab.linphone.org/BC/public/linphone-iphone.git 
--recursive
pod install

and integrated my Apple ID.

Does anybody know a solution for this linker error? Any help & 
especially explanations are appreciated!

Regards Klaus