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Diffstat (limited to 'cmake/QtDeferredDependenciesHelpers.cmake')
| -rw-r--r-- | cmake/QtDeferredDependenciesHelpers.cmake | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/cmake/QtDeferredDependenciesHelpers.cmake b/cmake/QtDeferredDependenciesHelpers.cmake new file mode 100644 index 0000000000..b233865727 --- /dev/null +++ b/cmake/QtDeferredDependenciesHelpers.cmake @@ -0,0 +1,31 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: BSD-3-Clause + +# Defers the connection 'dependent' -> 'dependency' +# +# The actual connection can be made by calling qt_internal_add_deferred_dependencies. +# +function(qt_internal_defer_dependency dependent dependency) + set_property(GLOBAL APPEND PROPERTY QT_DEFERRED_DEPENDENCIES ${doc_target} ${tool_target}) +endfunction() + +# Adds dependencies between targets that have been deferred by calling qt_internal_defer_dependency. +# +# This function checks whether the connection can be made (the dependency target exists). +# If the connection cannot be made, the deferred connection is left in the global property. +# Potentially, some later call to qt_internal_add_deferred_dependencies will add it. +# +function(qt_internal_add_deferred_dependencies) + unset(unknown_deps) + get_property(deferred_deps GLOBAL PROPERTY QT_DEFERRED_DEPENDENCIES) + while(deferred_deps) + list(POP_FRONT deferred_deps dependent) + list(POP_FRONT deferred_deps dependency) + if (TARGET ${dependency}) + add_dependencies(${dependent} ${dependency}) + else() + list(APPEND unknown_deps ${dependent} ${dependency}) + endif() + endwhile() + set_property(GLOBAL PROPERTY QT_DEFERRED_DEPENDENCIES ${unknown_deps}) +endfunction() |