basysKom Toolbox

05 – Enable build time checks for your QML files

Enable build time checks for your QML files


Find QML issues already at build time.


QML is weakly typed – issues might only show up during runtime when a document is actually loaded. Qt is offering several ways to improve this situation. Use either qmllint or the Qt Quick compiler to catch syntax errors already during build time. Consider adding this to your CI system to make the most out of it.





Implementation effort



All QML projects.


Note that both, qmllint and the Qt Quick Compiler can only catch things that do not rely on specific execution context such as syntax errors.

See also

Continuous Integration keeps your project healthy

Implementation hints

qmllint has been added with Qt5.4. The Qt Quick compiler has been available in upstream Qt since Qt5.11.

Ideally these tools are run as part of the build process.

Given that you are already using QRCs for your QML documents you can just add CONFIG+=qtquickcompiler to your project.

For CMake and more details see:

About the Toolbox

The basysKom Toolbox is a state-of-the-art collection of best practices in agile management and software development and a valuable tool for every kickoff meeting.

These cards can be used during a project kickoff in order to select best fitting good practices from the very start of your project, but also as a reminder during the course of a project implementation. Every card holds a QR code with additional information related to the specific tool, the tools’ applicability, known constraints and additional tips on how to implement it in a project setup.

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