qt5base-lts/cmake/QtPlugins.cmake.in
Alexandru Croitor b104bedea1 CMake: Refactor handling of static plugins
Extract common static plugin handling functionality into a separate
QtPublicPluginHelpers.cmake file which is loaded by the Qt6 package.

Split the code into smaller functions that will be re-used by each
templated QtPlugins.cmake.in file, rather than copy pasting the same
code into each QtFooPlugins.cmake file.

As a drive-by, handle QtFeatures.cmake and QtFeaturesCommon.cmake
as public helper files just like QtPublicPluginHelpers.cmake.

This makes it clearer that the functions are available outside
the internal Qt build and also provides a way for not dumping new
helper functions into Qt6CoreMacros.cmake.

Task-number: QTBUG-92933
Change-Id: Id816ef009b4fac1cd317d3ef23f21b3530028067
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2021-05-11 18:57:17 +02:00

62 lines
2.4 KiB
CMake

include_guard(DIRECTORY)
@QT_MODULE_PLUGIN_INCLUDES@
# Use a function to hide all the temporary variables we use so they don't leak
# out into the consuming scope
function(__qt_internal_add_static_plugins_once)
set(_module_target "@INSTALL_CMAKE_NAMESPACE@::@QT_MODULE@")
set(_qt_plugins "")
# Properties can't be set on aliased targets, so make sure to unalias the target. This is needed
# when Qt examples are built as part of the Qt build itself.
get_target_property(_aliased_target ${_module_target} ALIASED_TARGET)
if(_aliased_target)
set(_module_target ${_aliased_target})
endif()
# Include all PluginConfig.cmake files and update the QT_PLUGINS property of the module.
file(GLOB _qt_plugin_config_files "${CMAKE_CURRENT_LIST_DIR}/@INSTALL_CMAKE_NAMESPACE@*PluginConfig.cmake")
foreach(_config_file ${_qt_plugin_config_files})
string(REGEX REPLACE "^.*/@INSTALL_CMAKE_NAMESPACE@(.*Plugin)Config.cmake$" "\\1" _qt_plugin "${_config_file}")
include("${_config_file}")
if(TARGET "@INSTALL_CMAKE_NAMESPACE@::${_qt_plugin}")
list(APPEND _qt_plugins ${_qt_plugin})
endif()
endforeach()
set_property(TARGET ${_module_target} PROPERTY QT_PLUGINS ${_qt_plugins})
get_target_property(_have_added_plugins_already ${_module_target} __qt_internal_plugins_added)
if(_have_added_plugins_already)
return()
endif()
foreach(plugin_target ${_qt_plugins})
__qt_internal_plugin_get_plugin_type("${plugin_target}" __has_plugin_type __plugin_type)
if(NOT __has_plugin_type)
continue()
endif()
__qt_internal_plugin_has_class_name("${plugin_target}" __has_class_name)
if(NOT __has_class_name)
continue()
endif()
list(APPEND "QT_ALL_PLUGINS_FOUND_BY_FIND_PACKAGE_${__plugin_type}" "${plugin_target}")
__qt_internal_add_static_plugin_linkage("${plugin_target}" "${_module_target}")
__qt_internal_add_static_plugin_import_macro(
"${plugin_target}" ${_module_target} "@QT_MODULE@")
endforeach()
set("QT_ALL_PLUGINS_FOUND_BY_FIND_PACKAGE_${__plugin_type}"
"${QT_ALL_PLUGINS_FOUND_BY_FIND_PACKAGE_${__plugin_type}}"
PARENT_SCOPE
)
set_target_properties(${_module_target} PROPERTIES __qt_internal_plugins_added TRUE)
endfunction()
if(NOT @BUILD_SHARED_LIBS@ AND NOT QT_NO_CREATE_TARGETS)
__qt_internal_add_static_plugins_once()
endif()