Duplicate native library during gradlew build: libfbjni.so (with potential fix?)

[shoffing]

Description

While trying to get Detox set up with my existing project, I ran into a duplicate native libs issue while detox was attempting to run gradlew:

> Task :app:compileDebugAndroidTestJavaWithJavac
Note: /home/shoffing/projects/grim-sim/android/app/src/androidTest/java/com/shoffing/grimsim/DetoxTest.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.

> Task :react-native-gesture-handler:mergeDebugAndroidTestNativeLibs FAILED
w: Detected multiple Kotlin daemon sessions at

[Incubating] Problems report is available at: file:///home/shoffing/projects/grim-sim/android/build/reports/problems/problems-report.html

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':react-native-gesture-handler:mergeDebugAndroidTestNativeLibs'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.MergeNativeLibsTask$MergeNativeLibsTaskWorkAction
   > 2 files found with path 'lib/arm64-v8a/libfbjni.so' from inputs:
      - /home/shoffing/projects/grim-sim/node_modules/react-native-gesture-handler/android/build/intermediates/library_jni/debug/copyDebugJniLibsProjectOnly/jni/arm64-v8a/libfbjni.so
      - /home/shoffing/.gradle/caches/8.13/transforms/24a0799b84a0c73c289e36d2d1d37648/transformed/react-android-0.81.4-debug/jni/arm64-v8a/libfbjni.so
     If you are using jniLibs and CMake IMPORTED targets, see
     https://developer.android.com/r/tools/jniLibs-vs-imported-targets

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

For more on this, please refer to https://docs.gradle.org/8.13/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.

BUILD FAILED in 6m 37s
1523 actionable tasks: 912 executed, 611 up-to-date


Important: 'detox build' is a convenience shortcut for calling your own build command, as provided in the config file.
Failures in this build command are not the responsibility of Detox. You are responsible for maintaining this command.

Command failed: cd android && ./gradlew assembleDebug assembleAndroidTest -DtestBuildType=debug

After a while of troubleshooting, I stumbled upon #3283 by @coado, and was able to fix the issue by doing something similar here - patching node_modules/react-native-gesture-handler/android/build.gradle and adding:

exclude "**/libfbjni.so"

to the bottom of packagingOptions:

    packagingOptions {
        // For some reason gradle only complains about the duplicated version of libreact_render libraries
        // while there are more libraries copied in intermediates folder of the lib build directory, we exclude
        // only the ones that make the build fail (ideally we should only include libgesturehandler but we
        // are only allowed to specify exclude patterns)
        exclude "**/libreact_render*.so"
        exclude "**/libreactnative.so"
        exclude "**/libjsi.so"
        exclude "**/libc++_shared.so"
        exclude "**/libfbjni.so"
    }

Could this be incorporated upstream? I am not entirely sure I understand the implications of doing this, but it seems to have resolved the issue for me.

Steps to reproduce

1. Have an expo project.
2. cd android && ./gradlew assembleDebug assembleAndroidTest -DtestBuildType=debug

A link to a Gist, an Expo Snack or a link to a repository based on this template that reproduces the bug.

N/A

Gesture Handler version

2.28.0

React Native version

0.81.4

Platforms

Android

JavaScript runtime

None

Workflow

Using Expo Prebuild or an Expo development build

Architecture

New Architecture (Fabric)

Build type

Debug mode

Device

Android emulator

Device model

No response

Acknowledgements

Yes

[github-actions]

Hey! 👋

The issue doesn't seem to contain a minimal reproduction.

Could you provide a snack or a link to a GitHub repository under your username that reproduces the problem?

[shoffing]

The build succeeded, but the app actually has an error when I try to run it over the development client with a stack trace pointing at RNGH...I am not really sure anymore what's going on.

[marcor-a]

Any updates here. I'm at the same point. The patch helped to fix the build, but then the App Crashes when detox starts it. Starting the apk directly on the emulator is working fine.

[Baer05]

I'm at the same point, but the patch is not working for me to fix the build.

Is there a plan to fix this soon?

[MrShakes]

For me I went to node_modules/react-native-gesture-handler/android/build.gradle and put pickFirst "**/libfbjni.so" inside packagingOptions. It worked after that however Detox had other run issues as it's not yet compatible with react native version >= 0.80. I also don't know if the fix has other unintended consequences

[juanky201271]

I guess we are waiting for this PR #3721 to land/merge...???

[shifaurrehman]

I faced the same issue with RN 0.77.0 and react-native-gesture-handler 2.20.0 with new Architecture enabled. This patch fixed the react-native-gesture-handler issue; however, Detox still encountered other runtime issues afterward.