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qt5base-lts/cmake/QtPluginHelpers.cmake
Fabian Kosmale 57c1e8d533 build system: support module local definitions 
This introduces a new helper function,
qt_internal_add_repo_local_defines and makes use of it in
qt_internal_add_{module,test,executable,benchmark,plugin}. That function
checks whether QT_EXTRA_INTERNAL_TARGET_DEFINES is set. If it is, the
defines listed in there will be aded to all targets passed to the
functions mentioned above.

The intended usage is that QT_EXTRA_INTERNAL_TARGET_DEFINES gets set
in the repository local .cmake.conf. This allows e.g. opting in to
source incompatible changes in leaf modules (as long as those are
guarded by some define).

Pick-to: 6.2 6.3
Fixes: QTBUG-101640
Change-Id: I06c3693ee69f46e95a48de724621f0c97e7cc3a8
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2022-03-11 20:32:08 +01:00

490 lines
21 KiB
CMake
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# Note that these are only the keywords that are unique to qt_internal_add_plugin().
# That function also supports the keywords defined by _qt_internal_get_add_plugin_keywords().
macro(qt_internal_get_internal_add_plugin_keywords option_args single_args multi_args)
set(${option_args}
EXCEPTIONS
ALLOW_UNDEFINED_SYMBOLS
SKIP_INSTALL
)
set(${single_args}
OUTPUT_DIRECTORY
INSTALL_DIRECTORY
ARCHIVE_INSTALL_DIRECTORY
${__default_target_info_args}
)
set(${multi_args}
${__default_private_args}
${__default_public_args}
DEFAULT_IF
)
endmacro()
# This is the main entry point for defining Qt plugins.
# A CMake target is created with the given target.
# The target name should end with "Plugin" so static plugins are linked automatically.
# The PLUGIN_TYPE parameter is needed to place the plugin into the correct plugins/ sub-directory.
function(qt_internal_add_plugin target)
qt_internal_set_qt_known_plugins("${QT_KNOWN_PLUGINS}" "${target}")
_qt_internal_get_add_plugin_keywords(
public_option_args
public_single_args
public_multi_args
)
qt_internal_get_internal_add_plugin_keywords(
internal_option_args
internal_single_args
internal_multi_args
)
set(option_args ${public_option_args} ${internal_option_args})
set(single_args ${public_single_args} ${internal_single_args})
set(multi_args ${public_multi_args} ${internal_multi_args})
qt_parse_all_arguments(arg "qt_internal_add_plugin"
"${option_args}"
"${single_args}"
"${multi_args}"
"${ARGN}"
)
# Put this behind a cache option for now. It's too noisy for general use
# until most repos are updated.
option(QT_WARN_PLUGIN_PUBLIC_KEYWORDS "Warn if a plugin specifies a PUBLIC keyword" ON)
if(QT_WARN_PLUGIN_PUBLIC_KEYWORDS)
foreach(publicKeyword IN LISTS __default_public_args)
if(NOT "${arg_${publicKeyword}}" STREQUAL "")
string(REPLACE "PUBLIC_" "" privateKeyword "${publicKeyword}")
message(AUTHOR_WARNING
"Plugins are not intended to be linked to. "
"They should not have any public properties, but ${target} "
"sets ${publicKeyword} to the following value:\n"
" ${arg_${publicKeyword}}\n"
"Update your project to use ${privateKeyword} instead.\n")
endif()
endforeach()
endif()
qt_remove_args(plugin_args
ARGS_TO_REMOVE
${internal_option_args}
${internal_single_args}
${internal_multi_args}
ALL_ARGS
${option_args}
${single_args}
${multi_args}
ARGS
${ARGN}
)
# When creating a static plugin, retrieve the plugin initializer target name, but don't
# automatically propagate the plugin initializer.
list(APPEND plugin_args
__QT_INTERNAL_NO_PROPAGATE_PLUGIN_INITIALIZER
OUTPUT_TARGETS plugin_init_target
)
qt6_add_plugin(${target} ${plugin_args})
qt_internal_mark_as_internal_library(${target})
set(plugin_type "")
# TODO: Transitional: Remove the TYPE option handling after all repos have been converted to use
# PLUGIN_TYPE.
if(arg_TYPE)
set(plugin_type "${arg_TYPE}")
elseif(arg_PLUGIN_TYPE)
set(plugin_type "${arg_PLUGIN_TYPE}")
endif()
if((NOT plugin_type STREQUAL "qml_plugin") AND (NOT target MATCHES "(.*)Plugin$"))
message(AUTHOR_WARNING "The internal plugin target name '${target}' should end with the 'Plugin' suffix.")
endif()
qt_get_sanitized_plugin_type("${plugin_type}" plugin_type_escaped)
set(output_directory_default "${QT_BUILD_DIR}/${INSTALL_PLUGINSDIR}/${plugin_type}")
set(install_directory_default "${INSTALL_PLUGINSDIR}/${plugin_type}")
qt_internal_check_directory_or_type(OUTPUT_DIRECTORY "${arg_OUTPUT_DIRECTORY}" "${plugin_type}"
"${output_directory_default}" output_directory)
if (NOT arg_SKIP_INSTALL)
qt_internal_check_directory_or_type(INSTALL_DIRECTORY "${arg_INSTALL_DIRECTORY}"
"${plugin_type}"
"${install_directory_default}" install_directory)
set(archive_install_directory ${arg_ARCHIVE_INSTALL_DIRECTORY})
if (NOT archive_install_directory AND install_directory)
set(archive_install_directory "${install_directory}")
endif()
endif()
qt_set_common_target_properties(${target})
qt_set_target_info_properties(${target} ${ARGN} TARGET_VERSION "${arg_VERSION}")
# Override the OUTPUT_NAME that qt6_add_plugin() set, we need to account for
# QT_LIBINFIX, which is specific to building Qt.
# Make sure the Qt6 plugin library names are like they were in Qt5 qmake land.
# Whereas the Qt6 CMake target names are like the Qt5 CMake target names.
get_target_property(output_name ${target} OUTPUT_NAME)
set_property(TARGET "${target}" PROPERTY OUTPUT_NAME "${output_name}${QT_LIBINFIX}")
# Add a custom target with the Qt5 qmake name for a more user friendly ninja experience.
if(arg_OUTPUT_NAME AND NOT TARGET "${output_name}")
# But don't create such a target if it would just differ in case from "${target}"
# and we're not using Ninja. See https://gitlab.kitware.com/cmake/cmake/-/issues/21915
string(TOUPPER "${output_name}" uc_output_name)
string(TOUPPER "${target}" uc_target)
if(NOT uc_output_name STREQUAL uc_target OR CMAKE_GENERATOR MATCHES "^Ninja")
add_custom_target("${output_name}")
add_dependencies("${output_name}" "${target}")
endif()
endif()
qt_internal_add_target_aliases("${target}")
qt_skip_warnings_are_errors_when_repo_unclean("${target}")
_qt_internal_apply_strict_cpp("${target}")
set_target_properties("${target}" PROPERTIES
LIBRARY_OUTPUT_DIRECTORY "${output_directory}"
RUNTIME_OUTPUT_DIRECTORY "${output_directory}"
ARCHIVE_OUTPUT_DIRECTORY "${output_directory}"
QT_PLUGIN_TYPE "${plugin_type_escaped}"
# Save the non-sanitized plugin type values for qmake consumption via .pri files.
QT_QMAKE_PLUGIN_TYPE "${plugin_type}"
)
qt_handle_multi_config_output_dirs("${target}")
qt_internal_library_deprecation_level(deprecation_define)
qt_autogen_tools_initial_setup(${target})
unset(plugin_install_package_suffix)
# The generic plugins should be enabled by default.
# But platform plugins should always be disabled by default, and only one is enabled
# based on the platform (condition specified in arg_DEFAULT_IF).
if(plugin_type_escaped STREQUAL "platforms")
set(_default_plugin 0)
else()
set(_default_plugin 1)
endif()
if(DEFINED arg_DEFAULT_IF)
if(${arg_DEFAULT_IF})
set(_default_plugin 1)
else()
set(_default_plugin 0)
endif()
endif()
# Save the Qt module in the plug-in's properties and vice versa
if(NOT plugin_type_escaped STREQUAL "qml_plugin")
qt_internal_get_module_for_plugin("${target}" "${plugin_type_escaped}" qt_module)
set(qt_module_target "${QT_CMAKE_EXPORT_NAMESPACE}::${qt_module}")
if(NOT TARGET "${qt_module_target}")
message(FATAL_ERROR "Failed to associate Qt plugin with Qt module. ${qt_module_target} is not a known CMake target")
endif()
set_target_properties("${target}" PROPERTIES QT_MODULE "${qt_module}")
set(plugin_install_package_suffix "${qt_module}")
get_target_property(aliased_target ${qt_module_target} ALIASED_TARGET)
if(aliased_target)
set(qt_module_target ${aliased_target})
endif()
get_target_property(is_imported_qt_module ${qt_module_target} IMPORTED)
# Associate plugin with its Qt module when both are both built in the same repository.
# Check that by comparing the PROJECT_NAME of each.
# This covers auto-linking of the majority of plugins to executables and in-tree tests.
# Linking of plugins in standalone tests (when the Qt module will be an imported target)
# is handled instead by the complicated genex logic in QtModulePlugins.cmake.in.
set(is_plugin_and_module_in_same_project FALSE)
if(NOT is_imported_qt_module)
# This QT_PLUGINS assignment is only used by QtPostProcessHelpers to decide if a
# QtModulePlugins.cmake file should be generated (which only happens in static builds).
set_property(TARGET "${qt_module_target}" APPEND PROPERTY QT_PLUGINS "${target}")
get_target_property(module_source_dir ${qt_module_target} SOURCE_DIR)
get_directory_property(module_project_name
DIRECTORY ${module_source_dir}
DEFINITION PROJECT_NAME
)
if(module_project_name STREQUAL PROJECT_NAME)
set(is_plugin_and_module_in_same_project TRUE)
endif()
# When linking static plugins with the special logic in qt_internal_add_executable,
# make sure to skip non-default plugins.
if(is_plugin_and_module_in_same_project AND _default_plugin)
set_property(TARGET ${qt_module_target} APPEND PROPERTY
_qt_initial_repo_plugins
"${target}")
set_property(TARGET ${qt_module_target} APPEND PROPERTY
_qt_initial_repo_plugin_class_names
"$<TARGET_PROPERTY:${target},QT_PLUGIN_CLASS_NAME>"
)
endif()
endif()
# Associate plugin with its Qt module when the plugin is built in the current repository
# but the module is built in a different repository (qtsvg's QSvgPlugin associated with
# qtbase's QtGui).
# The association is done in a separate property, to ensure that reconfiguring in-tree tests
# in qtbase doesn't accidentally cause linking to a plugin from a previously built qtsvg.
# Needed for in-tree tests like in qtsvg, qtimageformats.
# This is done for each Qt module regardless if it's an imported target or not, to handle
# both per-repo and top-level builds (in per-repo build of qtsvg QtGui is imported, in a
# top-level build Gui is not imported, but in both cases qtsvg tests need to link to
# QSvgPlugin).
#
# TODO: Top-level in-tree tests and qdeclarative per-repo in-tree tests that depend on
# static Qml plugins won't work due to the requirement of running qmlimportscanner
# at configure time, but qmlimportscanner is not built at that point. Moving the
# execution of qmlimportscanner to build time is non-trivial because qmlimportscanner
# not only generates a cpp file to compile but also outputs a list of static plugins
# that should be linked and there is no straightforward way to tell CMake to link
# against a list of libraries that was discovered at build time (apart from
# response files, which apparently might not work on all platforms).
# qmake doesn't have this problem because each project is configured separately so
# qmlimportscanner is always built by the time it needs to be run for a test.
if(NOT is_plugin_and_module_in_same_project AND _default_plugin)
string(MAKE_C_IDENTIFIER "${PROJECT_NAME}" current_project_name)
set(prop_prefix "_qt_repo_${current_project_name}")
set_property(TARGET ${qt_module_target} APPEND PROPERTY
${prop_prefix}_plugins "${target}")
set_property(TARGET ${qt_module_target} APPEND PROPERTY
${prop_prefix}_plugin_class_names
"$<TARGET_PROPERTY:${target},QT_PLUGIN_CLASS_NAME>"
)
endif()
endif()
# Change the configuration file install location for qml plugins into the Qml package location.
if(plugin_type_escaped STREQUAL "qml_plugin" AND TARGET "${INSTALL_CMAKE_NAMESPACE}::Qml")
set(plugin_install_package_suffix "Qml/QmlPlugins")
endif()
# Save the install package suffix as a property, so that the Dependencies file is placed
# in the correct location.
if(plugin_install_package_suffix)
set_target_properties("${target}" PROPERTIES
_qt_plugin_install_package_suffix "${plugin_install_package_suffix}")
endif()
if(TARGET qt_plugins)
add_dependencies(qt_plugins "${target}")
endif()
if(plugin_type STREQUAL "platforms")
if(TARGET qpa_plugins)
add_dependencies(qpa_plugins "${target}")
endif()
if(_default_plugin AND TARGET qpa_default_plugins)
add_dependencies(qpa_default_plugins "${target}")
endif()
endif()
set_property(TARGET "${target}" PROPERTY QT_DEFAULT_PLUGIN "${_default_plugin}")
set_property(TARGET "${target}" APPEND PROPERTY EXPORT_PROPERTIES "QT_PLUGIN_CLASS_NAME;QT_PLUGIN_TYPE;QT_MODULE;QT_DEFAULT_PLUGIN")
set(private_includes
"${CMAKE_CURRENT_SOURCE_DIR}"
"${CMAKE_CURRENT_BINARY_DIR}"
# For the syncqt headers
"$<BUILD_INTERFACE:${QT_BUILD_DIR}/include>"
${arg_INCLUDE_DIRECTORIES}
)
set(public_includes
${arg_PUBLIC_INCLUDE_DIRECTORIES}
)
qt_internal_extend_target("${target}"
SOURCES ${arg_SOURCES}
INCLUDE_DIRECTORIES
${private_includes}
PUBLIC_INCLUDE_DIRECTORIES
${public_includes}
LIBRARIES ${arg_LIBRARIES} Qt::PlatformPluginInternal
PUBLIC_LIBRARIES ${arg_PUBLIC_LIBRARIES}
DEFINES
${arg_DEFINES}
${deprecation_define}
PUBLIC_DEFINES
${arg_PUBLIC_DEFINES}
FEATURE_DEPENDENCIES ${arg_FEATURE_DEPENDENCIES}
DBUS_ADAPTOR_SOURCES "${arg_DBUS_ADAPTOR_SOURCES}"
DBUS_ADAPTOR_FLAGS "${arg_DBUS_ADAPTOR_FLAGS}"
DBUS_INTERFACE_SOURCES "${arg_DBUS_INTERFACE_SOURCES}"
DBUS_INTERFACE_FLAGS "${arg_DBUS_INTERFACE_FLAGS}"
COMPILE_OPTIONS ${arg_COMPILE_OPTIONS}
PUBLIC_COMPILE_OPTIONS ${arg_PUBLIC_COMPILE_OPTIONS}
LINK_OPTIONS ${arg_LINK_OPTIONS}
PUBLIC_LINK_OPTIONS ${arg_PUBLIC_LINK_OPTIONS}
MOC_OPTIONS ${arg_MOC_OPTIONS}
ENABLE_AUTOGEN_TOOLS ${arg_ENABLE_AUTOGEN_TOOLS}
DISABLE_AUTOGEN_TOOLS ${arg_DISABLE_AUTOGEN_TOOLS}
)
qt_internal_add_repo_local_defines("${target}")
qt_internal_set_exceptions_flags("${target}" ${arg_EXCEPTIONS})
set(qt_libs_private "")
qt_internal_get_qt_all_known_modules(known_modules)
foreach(it ${known_modules})
list(FIND arg_LIBRARIES "Qt::${it}Private" pos)
if(pos GREATER -1)
list(APPEND qt_libs_private "Qt::${it}Private")
endif()
endforeach()
qt_register_target_dependencies("${target}" "${arg_PUBLIC_LIBRARIES}" "${qt_libs_private}")
if (NOT BUILD_SHARED_LIBS)
# There's no point in generating pri files for qml plugins. We didn't do it in Qt5 times.
if(NOT plugin_type_escaped STREQUAL "qml_plugin")
qt_generate_plugin_pri_file("${target}" pri_file)
endif()
if(qt_module_target)
qt_internal_link_internal_platform_for_object_library("${plugin_init_target}")
endif()
endif()
if (NOT arg_SKIP_INSTALL)
# Handle creation of cmake files for consumers of find_package().
# If we are part of a Qt module, the plugin cmake files are installed as part of that
# module.
# For qml plugins, they are all installed into the QtQml package location for automatic
# discovery.
if(plugin_install_package_suffix)
set(path_suffix "${INSTALL_CMAKE_NAMESPACE}${plugin_install_package_suffix}")
else()
set(path_suffix "${INSTALL_CMAKE_NAMESPACE}${target}")
endif()
qt_path_join(config_build_dir ${QT_CONFIG_BUILD_DIR} ${path_suffix})
qt_path_join(config_install_dir ${QT_CONFIG_INSTALL_DIR} ${path_suffix})
qt_internal_export_additional_targets_file(
TARGETS ${target} ${plugin_init_target}
EXPORT_NAME_PREFIX ${INSTALL_CMAKE_NAMESPACE}${target}
CONFIG_INSTALL_DIR "${config_install_dir}")
qt_internal_get_min_new_policy_cmake_version(min_new_policy_version)
qt_internal_get_max_new_policy_cmake_version(max_new_policy_version)
configure_package_config_file(
"${QT_CMAKE_DIR}/QtPluginConfig.cmake.in"
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}Config.cmake"
INSTALL_DESTINATION "${config_install_dir}"
)
write_basic_package_version_file(
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}ConfigVersionImpl.cmake"
VERSION ${PROJECT_VERSION}
COMPATIBILITY AnyNewerVersion
)
qt_internal_write_qt_package_version_file(
"${INSTALL_CMAKE_NAMESPACE}${target}"
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}ConfigVersion.cmake"
)
qt_install(FILES
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}Config.cmake"
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}ConfigVersion.cmake"
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}ConfigVersionImpl.cmake"
DESTINATION "${config_install_dir}"
COMPONENT Devel
)
if(pri_file)
qt_install(FILES "${pri_file}" DESTINATION "${INSTALL_MKSPECSDIR}/modules")
endif()
# Make the export name of plugins be consistent with modules, so that
# qt_add_resource adds its additional targets to the same export set in a static Qt build.
set(export_name "${INSTALL_CMAKE_NAMESPACE}${target}Targets")
qt_install(TARGETS
"${target}"
${plugin_init_target}
EXPORT ${export_name}
RUNTIME DESTINATION "${install_directory}"
LIBRARY DESTINATION "${install_directory}"
OBJECTS DESTINATION "${install_directory}"
ARCHIVE DESTINATION "${archive_install_directory}"
)
qt_install(EXPORT ${export_name}
NAMESPACE ${QT_CMAKE_EXPORT_NAMESPACE}::
DESTINATION "${config_install_dir}"
)
if(BUILD_SHARED_LIBS)
qt_apply_rpaths(TARGET "${target}" INSTALL_PATH "${install_directory}" RELATIVE_RPATH)
endif()
endif()
if (NOT arg_ALLOW_UNDEFINED_SYMBOLS)
### fixme: cmake is missing a built-in variable for this. We want to apply it only to
# modules and plugins that belong to Qt.
qt_internal_add_link_flags_no_undefined("${target}")
endif()
qt_internal_add_linker_version_script(${target})
set(finalizer_extra_args "")
if(NOT arg_SKIP_INSTALL)
list(APPEND finalizer_extra_args INSTALL_PATH "${install_directory}")
endif()
qt_add_list_file_finalizer(qt_finalize_plugin ${target} ${finalizer_extra_args})
if(NOT arg_SKIP_INSTALL)
qt_enable_separate_debug_info(${target} "${install_directory}")
qt_internal_install_pdb_files(${target} "${install_directory}")
endif()
endfunction()
function(qt_finalize_plugin target)
cmake_parse_arguments(arg "" "INSTALL_PATH" "" ${ARGN})
if(WIN32 AND BUILD_SHARED_LIBS)
_qt_internal_generate_win32_rc_file("${target}")
endif()
# Generate .prl files for plugins of static Qt builds.
if(NOT BUILD_SHARED_LIBS)
if(arg_INSTALL_PATH)
qt_generate_prl_file(${target} "${arg_INSTALL_PATH}")
endif()
endif()
endfunction()
function(qt_get_sanitized_plugin_type plugin_type out_var)
# Used to handle some edge cases such as platforms/darwin
string(REGEX REPLACE "[-/]" "_" plugin_type "${plugin_type}")
set("${out_var}" "${plugin_type}" PARENT_SCOPE)
endfunction()
# Utility function to find the module to which a plug-in belongs.
function(qt_internal_get_module_for_plugin target target_type out_var)
qt_internal_get_qt_all_known_modules(known_modules)
qt_get_sanitized_plugin_type("${target_type}" target_type)
foreach(qt_module ${known_modules})
get_target_property(module_type "${QT_CMAKE_EXPORT_NAMESPACE}::${qt_module}" TYPE)
# Assuming interface libraries can't have plugins. Otherwise we'll need to fix the property
# name, because the current one would be invalid for interface libraries.
if(module_type STREQUAL "INTERFACE_LIBRARY")
continue()
endif()
get_target_property(plugin_types
"${QT_CMAKE_EXPORT_NAMESPACE}::${qt_module}"
MODULE_PLUGIN_TYPES)
if(plugin_types AND target_type IN_LIST plugin_types)
set("${out_var}" "${qt_module}" PARENT_SCOPE)
return()
endif()
endforeach()
message(FATAL_ERROR "The plug-in '${target}' does not belong to any Qt module.")
endfunction()
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