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cmake-gui: Add a Qt version control variable

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Sankhesh Jhaveri 2020-12-28 14:38:13 -05:00 committed by Brad King
parent b3ee09290b
commit 2e4cbaa521
1 changed files with 20 additions and 8 deletions
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28
Source/QtDialog/CMakeLists.txt
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@ -8,15 +8,27 @@ set (QT_COMPONENTS
Widgets
Gui
)
# Look for Qt6 first
find_package(Qt6Widgets QUIET)
set(INSTALLED_QT_VERSION 6)
if(NOT Qt6Widgets_FOUND)
find_package(Qt5Widgets QUIET)
if(NOT Qt5Widgets_FOUND)
message(FATAL_ERROR "Could not find a valid Qt installation.")
set(CMake_QT_MAJOR_VERSION "A" CACHE
STRING "Expected Qt major version. Valid values are A (auto-select), 5, 6.")
set(SUPPORTED_QT_VERSIONS "A" 5 6)
set_property(CACHE CMake_QT_MAJOR_VERSION PROPERTY STRINGS ${SUPPORTED_QT_VERSIONS})
if(NOT CMake_QT_MAJOR_VERSION VERSION_EQUAL "A")
if(NOT CMake_QT_MAJOR_VERSION IN_LIST SUPPORTED_QT_VERSIONS)
message(FATAL_ERROR "Supported Qt versions are \"${SUPPORTED_QT_VERSIONS}\"."
" But CMake_QT_MAJOR_VERSION is set to ${CMake_QT_MAJOR_VERSION}.")
endif()
set(INSTALLED_QT_VERSION ${CMake_QT_MAJOR_VERSION})
else()
find_package(Qt6Widgets QUIET)
set(INSTALLED_QT_VERSION 6)
if(NOT Qt6Widgets_FOUND)
find_package(Qt5Widgets QUIET)
if(NOT Qt5Widgets_FOUND)
message(FATAL_ERROR "Could not find a valid Qt installation.")
endif()
set(INSTALLED_QT_VERSION 5)
endif()
set(INSTALLED_QT_VERSION 5)
endif()
find_package(Qt${INSTALLED_QT_VERSION}