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Diffstat (limited to 'cmake/QtVersionOption.cmake')
| -rw-r--r-- | cmake/QtVersionOption.cmake | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/cmake/QtVersionOption.cmake b/cmake/QtVersionOption.cmake new file mode 100644 index 00000000..1390f9db --- /dev/null +++ b/cmake/QtVersionOption.cmake @@ -0,0 +1,38 @@ +#.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. + +#============================================================================= +# SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org> +# +# SPDX-License-Identifier: BSD-3-Clause + +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() |