qt_import_plugins

Synopsis

qt_import_plugins(target
                  [INCLUDE plugin ...]
                  [EXCLUDE plugin ...]
                  [INCLUDE_BY_TYPE plugin_type plugin ...]
                  [EXCLUDE_BY_TYPE plugin_type])

Description

Specifies a custom set of plugins to import. The optional arguments: INCLUDE, EXCLUDE, INCLUDE_BY_TYPE, and EXCLUDE_BY_TYPE, can be used more than once.

This CMake command was introduced in Qt 5.14.

• INCLUDE -- can be used to specify a list of plugins to import.
• EXCLUDE -- can be used to specify a list of plugins to exclude.
• INCLUDE_BY_TYPE -- can be used to override the list of plugins to import for a certain plugin type.
• EXCLUDE_BY_TYPE -- can be used to specify a plugin type to exclude; then no plugins of that type are imported.

Qt provides plugin types such as imageformats, platforms, and sqldrivers.

If the command isn't used the target automatically links against a sane set of default plugins, for each Qt module that the target is linked against. For more information, see target_link_libraries.

Each plugin comes with a C++ stub file that automatically initializes the plugin. Consequently, any target that links against a plugin has this C++ file added to its SOURCES.

Note: This command imports plugins from static Qt builds only. On shared builds, it does nothing.

This command was introduced in Qt 5.15. You can use qt5_import_plugins in older versions of Qt.

Examples

add_executable(myapp main.cpp)
target_link_libraries(myapp Qt::Gui Qt::Sql)
qt_import_plugins(myapp
    INCLUDE Qt::QCocoaIntegrationPlugin
    EXCLUDE Qt::QMinimalIntegrationPlugin
    INCLUDE_BY_TYPE imageformats Qt5::QGifPlugin Qt5::QJpegPlugin
    EXCLUDE_BY_TYPE sqldrivers
)

In the snippet above, the following occurs with the executable myapp:

• The Qt::QCocoaIntegrationPlugin is imported into myapp.
• The Qt::QMinimalIntegrationPlugin plugin is excluded from being automatically imported into myapp.
• The default list of plugins for imageformats is overridden to only include Qt::QGifPlugin and Qt::QJpegPlugin.
• All sqldrivers plugins are excluded from automatic importing.