Hi <@U01A4RQ9XGW> VertexSample (KMP App Project) ...

# multiplatform

[Sean Chin Jun Kai]

Hi @Andrey Yastrebov

VertexSample (KMP App Project) imports firebase-ai-kmp via gradle mavenLocal: https://github.com/SeanChinJunKai/VertexSample
firebase-ai-kmp (KMP Library) imports FireabaseAIBridge via cocoapods: https://github.com/SeanChinJunKai/firebase-ai-kmp
FirebaseAIBridge is a static library (XCode Project) with swift code annotated with @objc: https://github.com/SeanChinJunKai/FirebaseAIBridge


I get the following errors when trying to build the iOS app in VertexSample

ld: warning: search path '/Users/seanchin/VertexSample/shared/build/xcode-frameworks/Debug/iphonesimulator18.4' not found
ld: warning: Could not find or use auto-linked framework 'FirebaseAIBridge': framework 'FirebaseAIBridge' not found
ld: warning: Could not parse or use implicit file '/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/Frameworks/SwiftUICore.framework/SwiftUICore.tbd': cannot link directly with 'SwiftUICore' because product being built is not an allowed client of it
Undefined symbols for architecture arm64:
"_OBJC_CLASS_$_FileDataPartObjc", referenced from:
in ComposeApp[2810](libio.github.seanchinjunkai:firebase-ai-kmp-cache.a.o)
"_OBJC_CLASS_$_FirebaseObjc", referenced from:
in ComposeApp[2810](libio.github.seanchinjunkai:firebase-ai-kmp-cache.a.o)
"_OBJC_CLASS_$_ImagePartObjc", referenced from:
in ComposeApp[2810](libio.github.seanchinjunkai:firebase-ai-kmp-cache.a.o)
"_OBJC_CLASS_$_InlineDataPartObjc", referenced from:
in ComposeApp[2810](libio.github.seanchinjunkai:firebase-ai-kmp-cache.a.o)
"_OBJC_CLASS_$_TextPartObjc", referenced from:
in ComposeApp[2810](libio.github.seanchinjunkai:firebase-ai-kmp-cache.a.o)
ld: symbol(s) not found for architecture arm64

[Sean Chin Jun Kai]

I removed isStatic = True and the undefined symbols went away but im getting:

ld: warning: ignoring duplicate libraries: '-ldl'
ld: framework 'FirebaseAIBridge' not found

Task composeApplinkDebugFrameworkIosSimulatorArm64 FAILED

error: Compilation finished with errors


I suspect that it is because of the following declaration in the kmp library

cocoapods {
    ios.deploymentTarget = libs.versions.ios.deploymentTarget.get()
    framework {
        baseName = "FirebaseAI" // Not FirebaseAIBridge due to ld: can't link a dylib with itself. same install_name as dylib being built
    }
    pod("FirebaseAIBridge") {
        source = git("<https://github.com/SeanChinJunKai/FirebaseAIBridge>") {
            branch = "main"
        }
        extraOpts += listOf("-compiler-option", "-fmodules")
    }
}

[Andrey Yastrebov]

Hi @Sean Chin Jun Kai

I don't see any cocoapods imports here: https://github.com/SeanChinJunKai/firebase-ai-kmp

Take a look at our sample as a reference, it has similar setup:
https://github.com/Kotlin/kmp-with-cocoapods-compose-sample

[Sean Chin Jun Kai]

oh sorry the cocoapods import is on the draft/sean branch for the firebase-ai-kmp and using the cocoapods kotlin plugin

[Sean Chin Jun Kai]

i was wondering if it’s possible to not use cocoapods in the kmp app and just importing the library via gradle would be sufficient

[Andrey Yastrebov]

You shouldn't mix direct integration and cocoapods integration. I also don't think you really need firebase-ai-kmp here, you can attach FirebaseAIBridge directly to your project

[Sean Chin Jun Kai]

firebase ai kmp supports android and ios so i’m hoping that users can just directly import it in their kmp as gradle dependency. there is expect actual declaration in firebase ai kmp

[Andrey Yastrebov]

The users still need to link against the FirebaseAIBridge, otherwise it won't work. Please take a look at the sample: https://github.com/Kotlin/kmp-with-cocoapods-compose-sample

[Sean Chin Jun Kai]

ohhh okay thanks for sharing

[Sean Chin Jun Kai]

would users still have to link if i’m using cinterop tool instead of cocoapods in the firebase-ai-kmp ?

[Andrey Yastrebov]

yes

[Sean Chin Jun Kai]

thank you so much @Andrey Yastrebov

[Sean Chin Jun Kai]

im trying to add the plugin but i keep getting this error and i am unable to declare cocoapods block

Cocoapods Integration requires pod version to be specified.
Please specify pod version by adding 'version = "version"' to the cocoapods block.
Alternatively, specify the version for the entire project explicitly.
Pod version format has to conform podspec syntax requirements: https://guides.cocoapods.org/syntax/podspec.html#version

[Andrey Yastrebov]

just declare a version like: version = "1.0"

[Sean Chin Jun Kai]

Ive taken a look at the sample. I am not pushing the pods to trunk but i am getting from my github repo like this

cocoapods {
    version = "1.0"

    podfile = project.file("../iosApp/Podfile")
    summary = "Sample App demonstrating firebase-ai-kmp sdk"
    homepage = "<https://github.com/SeanChinJunKai>"
    license = "Apache-2.0"

    ios.deploymentTarget = libs.versions.ios.deploymentTarget.get()


    pod("FirebaseAIBridge") {
        source = git("<https://github.com/SeanChinJunKai/FirebaseAIBridge>") {
            branch = "main"
        }
        linkOnly = true
        extraOpts += listOf("-compiler-option", "-fmodules")
    }


    framework {
        baseName = "ComposeApp"
        isStatic = true
    }
}

and this is my iosApp podfile

source '<https://cdn.cocoapods.org>'
deployment_target = '15.0'

target 'iosApp' do
  use_frameworks!
  platform :ios, deployment_target
  # Pods for iosApp
  pod 'FirebaseAIBridge', :git => '<https://github.com/SeanChinJunKai/FirebaseAIBridge>', :branch => 'main'
  pod 'composeApp', :path => '../composeApp'
end

but im still getting the below error:

The /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld command returned non-zero exit code: 1.
output:
ld: warning: ignoring duplicate libraries: '-ldl'
ld: framework 'FirebaseAIBridge' not found
error: Compilation finished with errors

FAILURE: Build failed with an exception.

[Andrey Yastrebov]

Can you attach a reproducer project?

[Sean Chin Jun Kai]

you can refer to this project: https://github.com/SeanChinJunKai/VertexSample

[Andrey Yastrebov]

I'll take a closer look tomorrow

[Sean Chin Jun Kai]

thank you so much @Andrey Yastrebov

[Sean Chin Jun Kai]

@Andrey Yastrebov do let me know if there are any more details which you require

[Andrey Yastrebov]

1. Remove spm firebase dependency from your project
2. Remove Compile Kotlin Framework build phase from your project
3. remove this, since you are using cocoapods integration

listOf(
        iosArm64(),
        iosSimulatorArm64()
    ).forEach { iosTarget ->
        iosTarget.binaries.framework {
            baseName = "ComposeApp"
            binaryOption("bundleId", "com.seanchinjunkai.VertexSample")
        }
    }

[Andrey Yastrebov]

I still don't see any cocoapods dependency in your lib

[Andrey Yastrebov]

Here is a fixed sample, you need to add missing GoogleService-Info.plist

VertexSample-main.zip

[Andrey Yastrebov]

And again I recommend you carefully follow the sample project:
https://github.com/Kotlin/kmp-with-cocoapods-compose-sample

[Sean Chin Jun Kai]

the lib is https://github.com/SeanChinJunKai/firebase-ai-kmp

[Sean Chin Jun Kai]

sorry the readme is misleading

[Sean Chin Jun Kai]

i have added the google info plist in my repo its not on github due to leaked keys

[Sean Chin Jun Kai]

ill try the above