FindQt

Finds an installed version of Qt3 or Qt4:

find_package(Qt [...])

Qt is a cross-platform application development framework for creating graphical user interfaces and applications.

Use this module only if the project can work with both Qt3 and Qt4 versions. If a specific version is required, use FindQt4 or FindQt3 module directly.

Behavior:

• If multiple Qt versions are found, the user must set the preferred major Qt version with the DESIRED_QT_VERSION variable.
• If only one Qt version is found, then the DESIRED_QT_VERSION is set automatically.
• Once the DESIRED_QT_VERSION variable is set, the corresponding FindQt3 or FindQt4 module is included.

Result Variables

This module defines the following variables:

QT4_INSTALLED

TRUE if Qt4 was found.

QT3_INSTALLED

TRUE if Qt3 was found.

Hints

QT_REQUIRED

If this variable is set to TRUE before calling find_package(Qt), CMake will raise an error if neither Qt3 nor Qt4 is found.

DESIRED_QT_VERSION

Specifies the Qt major version to use. Can be either 3, 4, or empty, to search for version automatically.

Examples

Finding Qt3 or Qt4 version:

find_package(Qt)