Android Linking Error when using audio module

[BogdanTheGeek]

Checklist

• I have searched the issue tracker for open issues that relate to the same problem, before opening a new one.
• This issue only relates to a single bug. I will open new issues for any other problems.

Describe the bug

Trying to use fyne together with github.com/faiface/beep causes a linking issue when packaging for android (works fine for native)

I have seen #2064, which looks similar, but after trying the a few older version of the NDK, cleaning the build cache in between, I still get the same result.
NDK version tried:

• 20.1.5948944
• 21.4.7075529
• 23.0.7599858
• 26.1.10909125

My assumption is that both beep(based on oto) and fyne define the following symbols. This could also be an upstream gomobile bug/limitation.

Here is an error log (I have removed duplicate details):

go build -buildmode=c-shared -o /var/folders/00/z7nqwngs2psft9hb9lws8svm0000gn/T/fyne-work-646537007/lib/armeabi-v7a/libfyne_app.so fyne-app failed: exit status 1
# fyne-app
/opt/homebrew/Cellar/go/1.20.4/libexec/pkg/tool/darwin_arm64/link: running /Users/bogdan/Library/Android/sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/darwin-x86_64/bin/armv7a-linux-androideabi21-clang failed: exit status 1
ld.lld: error: duplicate symbol: setCurrentContext
>>> defined at _cgo_export.c:25
>>>            /var/folders/00/z7nqwngs2psft9hb9lws8svm0000gn/T/go-link-647208879/000020.o:(setCurrentContext)
>>> defined at _cgo_export.c:25
>>>            /var/folders/00/z7nqwngs2psft9hb9lws8svm0000gn/T/go-link-647208879/000039.o:(.text+0x0)

ld.lld: error: duplicate symbol: callMain
ld.lld: error: duplicate symbol: onStart
ld.lld: error: duplicate symbol: onResume
ld.lld: error: duplicate symbol: onSaveInstanceState
ld.lld: error: duplicate symbol: onPause
ld.lld: error: duplicate symbol: onStop
ld.lld: error: duplicate symbol: onCreate
ld.lld: error: duplicate symbol: onDestroy
ld.lld: error: duplicate symbol: onWindowFocusChanged
ld.lld: error: duplicate symbol: onNativeWindowCreated
ld.lld: error: duplicate symbol: onNativeWindowRedrawNeeded
ld.lld: error: duplicate symbol: onNativeWindowDestroyed
ld.lld: error: duplicate symbol: onInputQueueCreated
ld.lld: error: duplicate symbol: onInputQueueDestroyed
ld.lld: error: duplicate symbol: onContentRectChanged
ld.lld: error: duplicate symbol: onConfigurationChanged
ld.lld: error: duplicate symbol: onLowMemory
ld.lld: error: duplicate symbol: JNI_OnLoad
ld.lld: error: duplicate symbol: ANativeActivity_onCreate

ld.lld: error: too many errors emitted, stopping now (use --error-limit=0 to see all errors)
clang-17: error: linker command failed with exit code 1 (use -v to see invocation)

How to reproduce

fyne package -os android -appID com.example.myapp

Screenshots

No response

Example code

package main

import (
	"fmt"
	"log"
	"net/http"
	"sync"
	"time"

	"github.com/faiface/beep"
	"github.com/faiface/beep/mp3"
	"github.com/faiface/beep/speaker"

	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/theme"
	"fyne.io/fyne/v2/widget"
)

func PlaySound() {
	f, err := http.Get("https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3")
	if err != nil {
		log.Fatal(err)
	}
	defer f.Body.Close()

	streamer, format, err := mp3.Decode(f.Body)
	if err != nil {
		log.Fatal(err)
	}
	defer streamer.Close()

	speaker.Init(format.SampleRate, format.SampleRate.N(time.Second/10))

	var wg sync.WaitGroup
	wg.Add(1)

	fmt.Println("Playing sound")

	speaker.Play(beep.Seq(streamer, beep.Callback(func() {
		wg.Done()
	})))

	wg.Wait()

	fmt.Println("Done playing sound")
}

func main() {
	a := app.New()
	a.Settings().SetTheme(theme.LightTheme())
	w := a.NewWindow("Clock")

	play := widget.NewButton("play", func() {
		go PlaySound()
	})

	w.SetContent(play)
	w.ShowAndRun()
}

Fyne version

2.4.1

Go compiler version

1.20.4

Operating system and version

macOS Sonoma M1

Additional Information

No response

[andydotxyz]

Maybe your app (or one of the deps) has brought in a gomobile dependency? You can't have both gomobile and Fyne in your app.

[BogdanTheGeek]

github.com/gopxl/beep latest release as of today use a very old version on oto that includes gomobile. Upgrading to the main branch fixes the issue.

go get 'github.com/gopxl/beep@main'

[andydotxyz]

For anyone that isn't able to remove the gomobile dependency from your project (usually due to transitive dependencies) there is another solution!

Fyne has a gomobile-bridge project that maps the gomobile APIs into a Fyne runtime: https://github.com/fyne-io/gomobile-bridge