ビルドの前に qmake を実行する

増分ビルドでの失敗を防ぐため、時間がかかっても、ビルドの前に必ず qmake を実行してください。「Preferences 」>「Build & Run 」>「Qmake 」の順に進み、「Run qmake on every build 」を選択してください。

「ビルドと実行」設定の「Qmake」タブ

「How to: Build and Run」および「Building projects with qmakeも参照してください

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