- Qt Creator Documentation
- Run qmake before building
- Qt Creator 18.0.2

Add libraries to qmake projects ◦ Configure projects for running

# Run qmake before building

To prevent failures on incremental builds, always run qmake before building, even though it takes more time. Go to Preferences > Build & Run > Qmake, and select Run qmake on every build.

See also How To: Build and Run and qmake Build Configuration.