44 lines
1.2 KiB
CMake
44 lines
1.2 KiB
CMake
# SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org>
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#[=======================================================================[.rst:
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QtVersionOption
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---------------
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Adds a build option to select the major Qt version if necessary,
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that is, if the major Qt version has not yet been determined otherwise
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(e.g. by a corresponding ``find_package()`` call).
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This module is typically included by other modules requiring knowledge
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about the major Qt version.
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If the ECM version passed to find_package was at least 5.240.0 Qt6 is picked by default.
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Otherwise Qt5 is picked.
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``QT_MAJOR_VERSION`` is defined to either be "5" or "6".
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Since 5.82.0.
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#]=======================================================================]
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if (DEFINED QT_MAJOR_VERSION)
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return()
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endif()
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if (TARGET Qt5::Core)
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set(QT_MAJOR_VERSION 5)
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elseif (TARGET Qt6::Core)
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set(QT_MAJOR_VERSION 6)
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else()
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if (ECM_GLOBAL_FIND_VERSION VERSION_GREATER_EQUAL 5.240)
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option(BUILD_WITH_QT6 "Build against Qt 6" ON)
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else()
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option(BUILD_WITH_QT6 "Build against Qt 6" OFF)
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endif()
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if (BUILD_WITH_QT6)
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set(QT_MAJOR_VERSION 6)
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else()
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set(QT_MAJOR_VERSION 5)
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endif()
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endif()
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