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# SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org>
#
# SPDX-License-Identifier: BSD-3-Clause
#[=======================================================================[.rst:
QtVersionOption
---------------
Adds a build option to select the major Qt version if necessary,
that is, if the major Qt version has not yet been determined otherwise
(e.g. by a corresponding ``find_package()`` call).
This module is typically included by other modules requiring knowledge
about the major Qt version.
``QT_MAJOR_VERSION`` is defined to either be "5" or "6".
Since 5.82.0.
#]=======================================================================]
if (DEFINED QT_MAJOR_VERSION)
return()
endif()
if (TARGET Qt5::Core)
set(QT_MAJOR_VERSION 5)
elseif (TARGET Qt6::Core)
set(QT_MAJOR_VERSION 6)
else()
option(BUILD_WITH_QT6 "Build against Qt 6" OFF)
if (BUILD_WITH_QT6)
set(QT_MAJOR_VERSION 6)
else()
set(QT_MAJOR_VERSION 5)
endif()
endif()
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