Qt 5.9 info¶
The Qt 5.9 PR is known to be compatible with Qt 5.7. The current Ubuntu repositories as of May 2018 are still stuck in 5.5, but there are third-party PPA’s that allow installation of new versions on Ubuntu Trusty (14.04) and Xenial (16.04). Here are the xenial instructions:
sudo apt-add-repository ppa:beineri/opt-qt571-xenial
sudo apt update
sudo apt install qt57base qt57location qt57declarative qt57tools qt57webengine qt57webchannel qt57xmlpatterns qt57svg
cmake -DCMAKE_PREFIX_PATH=/opt/qt57 ..
Check the CMakeCache.txt file in the build directory and look for lines like the below. If any of the paths start with /usr/lib/x86_64-linux-gnu, change them to /opt/qt57/lib. I think this may be a bug in our CMake system.
//No help, variable specified on the command line.
QT_BIN_PATH:UNINITIALIZED=/opt/qt57
//The directory containing a CMake configuration file for Qt5Concurrent.
Qt5Concurrent_DIR:PATH=/opt/qt57/lib/cmake/Qt5Concurrent
//The directory containing a CMake configuration file for Qt5Core.
Qt5Core_DIR:PATH=/opt/qt57/lib/cmake/Qt5Core
//The directory containing a CMake configuration file for Qt5Gui.
Qt5Gui_DIR:PATH=/opt/qt57/lib/cmake/Qt5Gui
//The directory containing a CMake configuration file for Qt5LinguistTools.
Qt5LinguistTools_DIR:PATH=/opt/qt57/lib/cmake/Qt5LinguistTools
//The directory containing a CMake configuration file for Qt5Network.
Qt5Network_DIR:PATH=/opt/qt57/lib/cmake/Qt5Network
//The directory containing a CMake configuration file for Qt5OpenGL.
Qt5OpenGL_DIR:PATH=/opt/qt57/lib/cmake/Qt5OpenGL
//The directory containing a CMake configuration file for Qt5Positioning.
Qt5Positioning_DIR:PATH=/opt/qt57/lib/cmake/Qt5Positioning
//The directory containing a CMake configuration file for Qt5PrintSupport.
Qt5PrintSupport_DIR:PATH=/opt/qt57/lib/cmake/Qt5PrintSupport
//The directory containing a CMake configuration file for Qt5Qml.
Qt5Qml_DIR:PATH=/opt/qt57/lib/cmake/Qt5Qml
//The directory containing a CMake configuration file for Qt5Quick.
Qt5Quick_DIR:PATH=/opt/qt57/lib/cmake/Qt5Quick
//The directory containing a CMake configuration file for Qt5Sql.
Qt5Sql_DIR:PATH=/opt/qt57/lib/cmake/Qt5Sql
//The directory containing a CMake configuration file for Qt5Svg.
Qt5Svg_DIR:PATH=/opt/qt57/lib/cmake/Qt5Svg
//The directory containing a CMake configuration file for Qt5WebChannel.
Qt5WebChannel_DIR:PATH=/opt/qt57/lib/cmake/Qt5WebChannel
//The directory containing a CMake configuration file for Qt5WebEngineCore.
Qt5WebEngineCore_DIR:PATH=/opt/qt57/lib/cmake/Qt5WebEngineCore
//The directory containing a CMake configuration file for Qt5WebEngineWidgets.
Qt5WebEngineWidgets_DIR:PATH=/opt/qt57/lib/cmake/Qt5WebEngineWidgets
//The directory containing a CMake configuration file for Qt5WebEngine.
Qt5WebEngine_DIR:PATH=/opt/qt57/lib/cmake/Qt5WebEngine
//The directory containing a CMake configuration file for Qt5Widgets.
Qt5Widgets_DIR:PATH=/opt/qt57/lib/cmake/Qt5Widgets