cmake build_error ai_generated true

CMake Error: AUTOGEN: No valid Qt 'uic' executable found for target 'myapp'

ID: cmake/autogen-uic-not-found

Also available as: JSON · Markdown · 中文
82%Fix Rate
85%Confidence
1Evidence
2024-03-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Qt5 5.15.2 active — — —
Qt6 6.5.0 active — — —
CMake 3.28 active — — —
CMake 3.29 active — — —

Root Cause

Qt5/Qt6 AUTOMOC/AUTOUIC/AUTORCC requires uic binary in PATH or via Qt5_DIR/Qt6_DIR, but it's missing or version mismatched.

generic

中文

Qt5/Qt6 的 AUTOMOC/AUTOUIC/AUTORCC 需要 uic 可执行文件在 PATH 中或通过 Qt5_DIR/Qt6_DIR 指定，但 uic 缺失或版本不匹配。

Workarounds

  1. 85% success Install Qt development tools: sudo apt install qtbase5-dev qtbase5-dev-tools (or qttools5-dev for uic). Then reconfigure. 
    Install Qt development tools: sudo apt install qtbase5-dev qtbase5-dev-tools (or qttools5-dev for uic). Then reconfigure.
  2. 75% success Explicitly set the uic path in CMake: set(QT_UIC_EXECUTABLE /usr/lib/qt5/bin/uic) before find_package(Qt5). 
    Explicitly set the uic path in CMake: set(QT_UIC_EXECUTABLE /usr/lib/qt5/bin/uic) before find_package(Qt5).

中文步骤

  1. 安装 Qt 开发工具：sudo apt install qtbase5-dev qtbase5-dev-tools（或 qttools5-dev 以获取 uic）。然后重新配置。
  2. 在 CMake 中显式设置 uic 路径：在 find_package(Qt5) 之前设置 set(QT_UIC_EXECUTABLE /usr/lib/qt5/bin/uic)。

Dead Ends

Common approaches that don't work:

  1. Reinstall Qt and set CMAKE_PREFIX_PATH to the install root 30% fail

    If only the library is installed without the development tools (uic, moc), find_package(Qt5) might succeed but uic is still missing.

  2. Set CMAKE_AUTOUIC OFF and manually run uic 40% fail

    Turning off AUTOUIC bypasses the error but leaves UI compilation unhandled, causing linker errors later.