<my-lib-name>/android/build/generated/source/codegen/jni which is not an existing directory.

[LuongTruong]

Description

I created a react native library using the cmd npx create-react-native-library@0.42.1 my-config

After implementing the code for library, I am able to run the example with library and execute my native code in Android.

However, when I integrate the library to my actual app and run react-native run-android, it shows the below error log

add_subdirectory given source
"/Users/.../node_modules/my-config/android/build/generated/source/codegen/jni/"
which is not an existing directory.

I checked and saw that

• node_modules/my-config/android/build/generated/source (yes, there is no codegen/jni).
• node_modules/my-config/android/generated/jni (the jni folder is here)
  Please take a look at the below image for more information

For more information, if I copy the jni folder to the actual path. I am able to build and use the lib as normal.
Please take a look at the below image for more information

Below are some files which may give you more information about the library's config.

build.gradle (my-config library)

sourceSets {
  main {
    if (isNewArchitectureEnabled()) {
        java.srcDirs += [
          "generated/java",
          "generated/jni"
        ]
    }
  }
}

react-native.config.js (my-config library)

module.exports = {
  dependency: {
    platforms: {
      android: {
        cmakeListsPath: 'generated/jni/CMakeLists.txt',
      },
    },
  },
};

autolinking.json (from my actual project)

"dependencies": {
  "my-config": {
    "root": "/Users/.../node_modules/my-config",
    "name": "my-config",
    "platforms": {
      "ios": {
        "podspecPath": "/Users/.../node_modules/my-config/my-config.podspec",
        "version": "0.4.0",
        "configurations": [],
        "scriptPhases": []
      },
      "android": {
        "sourceDir": "/Users/.../node_modules/my-config/android",
        "packageImportPath": "import com.myconfig.MyConfigPackage;",
        "packageInstance": "new MyConfigPackage()",
        "buildTypes": [],
        "libraryName": "RNMyConfigSpec",
        "componentDescriptors": [],
        "cmakeListsPath": "/Users/.../node_modules/my-config/android/build/generated/source/codegen/jni/CMakeLists.txt",
        "cxxModuleCMakeListsModuleName": null,
        "cxxModuleCMakeListsPath": null,
        "cxxModuleHeaderName": null,
        "isPureCxxDependency": false
      }
    }
  }
},

Please let me know if you need any information or have any question.

Many thanks!

Packages

• create-react-native-library
• react-native-builder-bob

Selected options

• Turbo module
• Kotlin & Objective C
• Vanilla

Link to repro

sorry this is a private source

Environment

System:
  OS: macOS 15.0.1
  CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
  Memory: 53.69 MB / 32.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.12.2
    path: /usr/local/bin/node
  Yarn:
    version: 3.6.4
    path: /usr/local/bin/yarn
  npm:
    version: 10.8.1
    path: /usr/local/bin/npm
  Watchman:
    version: 2024.07.01.00
    path: /usr/local/bin/watchman
Managers:
  CocoaPods:
    version: 1.15.2
    path: /usr/local/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.0
      - iOS 18.0
      - macOS 15.0
      - tvOS 18.0
      - visionOS 2.0
      - watchOS 11.0
  Android SDK:
    API Levels:
      - "28"
      - "30"
      - "31"
      - "33"
      - "34"
    Build Tools:
      - 28.0.3
      - 29.0.2
      - 30.0.2
      - 30.0.3
      - 31.0.0
      - 33.0.0
      - 33.0.1
      - 34.0.0
      - 35.0.0
    System Images:
      - android-34 | Google APIs Intel x86_64 Atom
      - android-34 | Google Play Intel x86_64 Atom
    Android NDK: 22.1.7171670
IDEs:
  Android Studio: 2024.1 AI-241.19072.14.2412.12360217
  Xcode:
    version: 16.0/16A242d
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.9
    path: /usr/bin/javac
  Ruby:
    version: 2.6.10
    path: /usr/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.75.4
    wanted: 0.75.4
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: false

[johnf]

I think the problem is in the package.json files doesn't include react-native.config.json. I'm about to create a PR

[atlj]

#648 by @johnf fixes this. We just published 0.42.0 please test it and reopen the issue if this is still a problem 🙌