react-native-svg Build Issue in React Native 0.78: How to Fix the C+ + Build System Error

Learn how to resolve the C+ + build system failure when using react-native-svg with React Native 0.78 by updating your react-native-reanimated version.
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Understanding the Build Failure with react-native-svg on React Native 0.78

When upgrading or creating a React Native project with version 0.78, developers may encounter a build failure related to the C+ + build system, particularly when integrating the react-native-svg library.

Common Error:

Build fails with a message like: "C+ + build system [build] failed while executing".

This error often stems from compatibility or dependency mismatches, especially related to native modules used by react-native-svg and animations.



Root Cause

The react-native-svg library often relies on react-native-reanimated for advanced animations and improved performance. An outdated or incompatible version of react-native-reanimated can trigger build failures when compiling native C+ + code.



How to Fix the Issue

Update react-native-reanimated to the latest compatible version:

Open your project directory.

Run:

[[See Video to Reveal this Text or Code Snippet]]

Clear build caches:

For iOS:

[[See Video to Reveal this Text or Code Snippet]]

For Android:

[[See Video to Reveal this Text or Code Snippet]]

Rebuild the project.



Why This Works

react-native-reanimated version 3.17.0 includes important fixes and compatibility updates aligned with React Native 0.78.

Syncing library versions ensures native modules compile correctly, preventing the C+ + build system errors.



Summary

If you face C+ + build errors with react-native-svg in React Native 0.78:

Ensure you have react-native-reanimated updated to at least 3.17.0.

Clean your build and reinstall pods or gradle dependencies.

Rebuild the project.

This approach aligns native code dependencies and resolves the build failures typical with this setup.



By following these steps, your React Native 0.78 project should build successfully with react-native-svg without the C+ + build system error.