Handle autolinking for pure C++ turbo modules without includesGeneratedCode

[satya164]

Summary:

Currently, pure C++ modules require includesGeneratedCode: true, and the library to be shipping codegen files to work. This is inconsistent with regular turbo modules that work with both setups.

The issue is in 2 places:

1. CLI returns hardcoded default for C++ modules
2. Autolinking logic doesn't run codegen for C++ modules

PR removing hardcoded default from CLI: react-native-community/cli#2799

This change updates the autolinking logic to detect pure C++ libraries without includesGeneratedCode: true, run codegen for them and use correct path for CMakeLists based on the codegen output.

Changelog:

[ANDROID] [FIXED] - Fix pure C++ turbo modules not working without includesGeneratedCode: true

Test Plan:

• create new cpp library: npx create-react-native-library@latest awesome-library --yes --description "my library" --type turbo-module --languages cpp
• run yarn example android and notice that the build works
• apply the following patch to remove includesGeneratedCode: true:

  diff --git a/package.json b/package.json
  index e3c893a..f41100f 100644
  --- a/package.json
  +++ b/package.json
  @@ -112,22 +112,16 @@
          {
            "project": "tsconfig.build.json"
          }
  -      ],
  -      "codegen"
  +      ]
      ]
    },
    "codegenConfig": {
      "name": "AwesomeLibrarySpec",
      "type": "modules",
      "jsSrcsDir": "src",
  -    "outputDir": {
  -      "ios": "ios/generated",
  -      "android": "android/generated"
  -    },
      "android": {
        "javaPackageName": "com.awesomelibrary"
  -    },
  -    "includesGeneratedCode": true
  +    }
    },
    "prettier": {
      "quoteProps": "consistent",
  diff --git a/react-native.config.js b/react-native.config.js
  index fef2c32..46f9600 100644
  --- a/react-native.config.js
  +++ b/react-native.config.js
  @@ -5,7 +5,6 @@ module.exports = {
    dependency: {
      platforms: {
        android: {
  -        cmakeListsPath: 'generated/jni/CMakeLists.txt',
          cxxModuleCMakeListsModuleName: 'react-native-awesome-library',
          cxxModuleCMakeListsPath: 'CMakeLists.txt',
          cxxModuleHeaderName: 'AwesomeLibraryImpl',

• run yarn example android and notice that the build fails
• apply the patch from this PR and from fix(android): don't hardcode default cmakeListsPath for pure c++ modules react-native-community/cli#2799 and notice that the module works correctly

screenshot from the test library:

[meta-codesync]

@fabriziocucci has imported this pull request. If you are a Meta employee, you can view this in D106094034.

[cortinico]

Here there is a bunch of duplicated code.

Can you extract the common logic from configureCodegen into a reusable helper, then call it here for pure C++ deps instead?

[satya164]

@cortinico extracted duplicated task registration code to registerCodegenTasks

[cortinico]

Code looks good but let's add a couple of tests for the 2 functions I suggested

[react-native-bot]

This pull request was successfully merged by @satya164 in c789880

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