diff options
Diffstat (limited to 'cmake/QtCMakeVersionHelpers.cmake')
| -rw-r--r-- | cmake/QtCMakeVersionHelpers.cmake | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/cmake/QtCMakeVersionHelpers.cmake b/cmake/QtCMakeVersionHelpers.cmake index a42e1a523f..52f65ebc12 100644 --- a/cmake/QtCMakeVersionHelpers.cmake +++ b/cmake/QtCMakeVersionHelpers.cmake @@ -36,6 +36,25 @@ function(qt_internal_get_supported_min_cmake_version_for_using_qt out_var) set(${out_var} "${supported_version}" PARENT_SCOPE) endfunction() +# Returns the minimum CMake version that needs to be specified in the cmake_minimum_required() call +# of a Qt user project as originally advertised by Qt. +function(qt_internal_get_supported_min_cmake_version_for_using_qt_in_cmake_min_required out_var) + if(NOT DEFINED BUILD_SHARED_LIBS) + message(FATAL_ERROR "BUILD_SHARED_LIBS is needed to decide the minimum CMake version. " + "It should have been set by this point.") + endif() + + if(BUILD_SHARED_LIBS) + set(supported_version + "${QT_SUPPORTED_MIN_CMAKE_VERSION_FOR_USING_QT_SHARED_IN_CMAKE_MIN_REQUIRED}") + else() + set(supported_version + "${QT_SUPPORTED_MIN_CMAKE_VERSION_FOR_USING_QT_STATIC_IN_CMAKE_MIN_REQUIRED}") + endif() + + set(${out_var} "${supported_version}" PARENT_SCOPE) +endfunction() + # Returns the computed minimum supported CMake version required to /build/ Qt. function(qt_internal_get_computed_min_cmake_version_for_building_qt out_var) # An explicit override for those that take it upon themselves to fix the build system @@ -74,6 +93,23 @@ function(qt_internal_get_computed_min_cmake_version_for_using_qt out_var) set(${out_var} "${computed_min_version}" PARENT_SCOPE) endfunction() +# Returns the computed minimum CMake version that needs to be specified in the +# cmake_minimum_required() call of a Qt user project. +function(qt_internal_get_computed_min_cmake_version_for_using_qt_in_cmake_min_required out_var) + # Allow overriding the version for user projects, without forcing + # each project developer to have to override it manually. + if(QT_FORCE_MIN_CMAKE_VERSION_FOR_USING_QT_IN_CMAKE_MIN_REQUIRED) + set(computed_min_version "${QT_FORCE_MIN_CMAKE_VERSION_FOR_USING_QT_IN_CMAKE_MIN_REQUIRED}") + + # No override was given, thus initialize with the default minimum. + else() + qt_internal_get_supported_min_cmake_version_for_using_qt_in_cmake_min_required( + min_supported_version) + set(computed_min_version "${min_supported_version}") + endif() + set(${out_var} "${computed_min_version}" PARENT_SCOPE) +endfunction() + # Returns the oldest CMake version for which NEW policies should be enabled. # It can be older than the minimum supported or computed CMake version, as it # is only used for policy settings. The currently running CMake must not be |