Flutter developers occasionally face build errors on Windows indicating an “Incorrect CMake Version” despite having the latest version installed. This error typically arises from configuration mismatches rather than an actual CMake version issue. This guide offers clear solutions to quickly resolve this problem.
Why Does the “Incorrect CMake Version” Error Occur?
Common reasons for this issue include:
- Conflicting or multiple CMake installations.
- Incorrect environment path configurations.
- Flutter SDK misconfiguration.
Here’s how you can effectively fix it:
Step-by-Step Solutions for Resolving the CMake Version Error
Step 1: Verify CMake Installation and Environment Variables
Ensure Flutter correctly identifies your CMake installation:
- Run the command in PowerShell or CMD:
cmake --version
- Verify that the displayed version meets Flutter’s requirement.
- Confirm that your system environment PATH includes the correct CMake installation directory.
Step 2: Configure Flutter to Use Specific CMake Version
Explicitly tell Flutter where CMake is installed:
- Open your Flutter project and locate:
windows\CMakeLists.txt
- Specify the required CMake version at the top:
cmake_minimum_required(VERSION 3.25)
Ensure this version matches your installed CMake version.
Step 3: Update Flutter SDK and Plugins
Resolve potential internal SDK mismatches:
- Update Flutter SDK to the latest stable version:
flutter upgrade
flutter clean
flutter pub get
Step 4: Reinstall or Reset CMake
If conflicts persist:
- Uninstall existing CMake versions via Control Panel or Settings.
- Install the latest official CMake version from CMake official website.
- Restart your computer.
Step 5: Clean and Rebuild Flutter Project
Perform a thorough project clean and rebuild:
flutter clean
flutter build windows
Additional Practical Tips
- Always maintain a single CMake installation to prevent conflicts.
- Regularly check your environment paths for accurate configurations.
- Periodically update Flutter dependencies.
Mistakes to Avoid
- Installing multiple CMake versions simultaneously.
- Neglecting system restarts after updating environment variables or tools.
Recommended Documentation
Conclusion
Resolving the “Incorrect CMake Version” error involves careful verification of configurations and ensuring clear paths to your CMake installation. Following the solutions above will streamline your Flutter Windows app builds efficiently.
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