Undefined symbols for architecture x86_64: "_OBJC_CLASS_$_PTPusher"

[samuelrabini]

I followed all the instruction to install Pusher using Cocoapods and at first run I had no problemi while compiling the solution. Now I'm receiving the error:

Undefined symbols for architecture x86_64:
"OBJC_CLASS$_PTPusher"

Here is my Podfile:

target 'MyEvo' do
pod 'libPusher', git: 'https://github.com/pusher/libPusher.git', branch: 'push-notifications'

target 'MyEvoTests' do
inherit! :search_paths
# Pods for testing
end

target 'MyEvoUITests' do
inherit! :search_paths
# Pods for testing
end

end

Don't where's the problem.
The build fails as soon as I adde the line:

self.pusher = [PTPusher pusherWithKey:APP_KEY delegate:self encrypted:YES];

in the AppDelegate.h

[samuelrabini]

I found out hot to fix: in Other Linker Flags I remove -lxml2 and added $(inherited) both in debut and release nodes.

Hope this help someone else in the future.