'unicode/utf8.h' file not found [Catalyst UIKit for macOS]

[appfrilans]

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  file a Github issue.
  • If this is a feature request make sure the issue title starts with "FR:".
• For general technical questions, post a question on StackOverflow
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  google group.
• For help troubleshooting your application that does not fall under one
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  Firebase support channel.

[REQUIRED] Step 2: Describe your environment

• Xcode version: 11.0 beta 1
• Firebase SDK version: 6.2.0
• Firebase Component: FirebaseCore (Auth, Core, Database, Firestore, Messaging, Storage, etc)
• Component version: 6.0.2

[REQUIRED] Step 3: Describe the problem

I get an error

fatal error: 'unicode/utf8.h' file not found when running.

Steps to reproduce:

I am trying to integrate macOS in my Catalyst/ UIKit for Mac app. Using Cocoapods 1.7.2. With this pod file:

target 'xxxxxMac' do
platform :macos, '10.15'

use_frameworks!

pod 'FirebaseCore'
pod 'FirebaseAuth'
pod 'FirebaseDatabase'
pod 'FirebaseStorage'
end

Error is:

Library/Developer/Xcode/DerivedData/projectx-gjaanasqdnycapdqrcipkyxevoec/Build/Intermediates.noindex/Pods.build/Debug-uikitformac/FirebaseDatabase-iOS.build/Objects-normal/x86_64/FSRWebSocket.o

....../Users/xxxx/xxx/xxxx/Pods/FirebaseDatabase/Firebase/Database/third_party/SocketRocket/FSRWebSocket.m:28:9: fatal error: 'unicode/utf8.h' file not found
#import <unicode/utf8.h>
^~~~~~~~~~~~~~~~
1 error generated.

Relevant Code:

#if targetEnvironment(UIKitForMac)
import FirebaseCore
#else
import Firebase
#endif

[morganchen12]

While our support for Catalyst is non-existent as of right now, this unicode header is one that should be present on every platform that Apple supports. Looks like this header is part of the WebKit framework. Does the error go away if you add WebKit to your target's linked frameworks?

[appfrilans]

Adding WebKit did not help. Even if Catalyst support is not existing, would it not be possible to add it anyway as Firebase has macOS support?

Here is my Build phases/Link Binary with libraries after adding WebKit. However, setting the firebase frameworks to iOS + Mac gives me another error.

"Building for UIKit for Mac, but the linked framework 'FBSDKLoginKit.framework' was built for . You may need to restrict the platforms for which this framework should be linked in the target editor."

Keeping the setting att iOS only still gives me the 'unicode/utf8.h' file not found-error

[Jason-Morcos]

Could this perhaps be because of changes apple is making to web handling with Catalyst? I know they deprecated UIWebView and don't have a Catalyst equivalent of UIWebView (forcing the use of WKWebView). Perhaps they have made deprecating changes to WebKit in general and are enforcing these deprecations in Catalyst? Perhaps they have made a breaking change to the utf8 header file. Just a thought.

[ryanwilson]

This may also be related to CocoaPods not having support for Catalyst - they have an Issue open tracking it now. CocoaPods/CocoaPods#8892

[morganchen12]

Even if Catalyst support is not existing, would it not be possible to add it anyway as Firebase has macOS support?

See #3144

[appfrilans]

Could this be relevant? An answer from Apple but also a comment about getting one framework working with UIKit-for-mac:

https://forums.developer.apple.com/message/362577

[ryanwilson]

Responded in the other issue #3144 (comment)

General Catalyst related progress and updates should be posted there.

"Building for UIKit for Mac, but the linked framework 'FBSDKLoginKit.framework' was built for . You may need to restrict the platforms for which this framework should be linked in the target editor."

It's also worth noting that FBSDKLoginKit is a Facebook SDK, not a Firebase one 😃