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qt5base-lts/cmake/QtPluginHelpers.cmake
Alexandru Croitor 53b11882c8 CMake: Cleanup module and plugin define situation 
The QT.<module>.DEFINES assignment in pri files needs to take into
account the module name when computing the define name. This is the
MODULE value that qmake specifies.
In CMake that would be the value of CONFIG_MODULE_NAME.

Previously the value of the define was computed in
qt_internal_module_info() without taking into account the module name.

While qt_internal_module_info() ended being used also for plugins and
other target types, the defines computed by it were meant to be used
only for Qt modules.
Thus remove the <result>_define assignment from
qt_internal_module_info and move its computation directly into
qt_internal_add_module, taking into account the value of
CONFIG_MODULE_NAME.

The only other use of module_define was in qt_internal_add_plugin but
that was merely a long overdue copy-paste error, qmake doesn't
propagate QT_FOO_LIB defines for plugins.

As result, a define special case in testlib is not needed anymore,
because the define is now computed properly.

Finally, QT_FOO_LIB should not be used while building the Qt module
itself, so instead of using PUBLIC_DEFINES option of
qt_internal_extend_target, use target_compile_definitions(INTERFACE)
directly.

Change-Id: I4d44f7461bac2f0c09aec3e995d02dfe36e00883
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-10-30 21:59:20 +00:00

333 lines
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CMake
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# This is the main entry point for defining Qt plugins.
# A CMake target is created with the given target. The TYPE parameter is needed to place the
# plugin into the correct plugins/ sub-directory.
function(qt_internal_add_plugin target)
qt_internal_module_info(module "${target}")
qt_internal_set_qt_known_plugins("${QT_KNOWN_PLUGINS}" "${target}")
qt_parse_all_arguments(arg "qt_internal_add_plugin"
"${__qt_add_plugin_optional_args};SKIP_INSTALL"
"${__qt_add_plugin_single_args}"
"${__qt_add_plugin_multi_args}"
"${ARGN}"
)
qt_get_sanitized_plugin_type("${arg_TYPE}" plugin_type_escaped)
set(output_directory_default "${QT_BUILD_DIR}/${INSTALL_PLUGINSDIR}/${arg_TYPE}")
set(install_directory_default "${INSTALL_PLUGINSDIR}/${arg_TYPE}")
if (arg_QML_TARGET_PATH)
set(target_path "${arg_QML_TARGET_PATH}")
set(output_directory_default "${QT_BUILD_DIR}/${INSTALL_QMLDIR}/${target_path}")
set(install_directory_default "${INSTALL_QMLDIR}/${target_path}")
endif()
# Derive the class name from the target name if it's not explicitly specified.
# Don't set it for qml plugins though.
set(plugin_class_name "")
if (NOT "${plugin_type_escaped}" STREQUAL "qml_plugin")
if (NOT arg_CLASS_NAME)
set(plugin_class_name "${target}")
else()
set(plugin_class_name "${arg_CLASS_NAME}")
endif()
endif()
qt_internal_check_directory_or_type(OUTPUT_DIRECTORY "${arg_OUTPUT_DIRECTORY}" "${arg_TYPE}"
"${output_directory_default}" output_directory)
if (NOT arg_SKIP_INSTALL)
qt_internal_check_directory_or_type(INSTALL_DIRECTORY "${arg_INSTALL_DIRECTORY}" "${arg_TYPE}"
"${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()
if(arg_STATIC OR NOT BUILD_SHARED_LIBS)
add_library("${target}" STATIC)
else()
add_library("${target}" MODULE)
if(APPLE)
# CMake defaults to using .so extensions for loadable modules, aka plugins,
# but Qt plugins are actually suffixed with .dylib.
set_property(TARGET "${target}" PROPERTY SUFFIX ".dylib")
endif()
qt_internal_apply_win_prefix_and_suffix("${target}")
endif()
qt_set_common_target_properties(${target})
qt_set_target_info_properties(${target} ${ARGN} TARGET_VERSION "${arg_VERSION}")
# 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.
set(output_name "${target}")
if(arg_OUTPUT_NAME)
set(output_name "${arg_OUTPUT_NAME}")
endif()
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}")
add_custom_target("${output_name}")
add_dependencies("${output_name}" "${target}")
endif()
if (ANDROID)
qt_android_apply_arch_suffix("${target}")
set_target_properties(${target}
PROPERTIES
LIBRARY_OUTPUT_NAME "plugins_${arg_TYPE}_${output_name}"
)
endif()
qt_internal_add_target_aliases("${target}")
qt_skip_warnings_are_errors_when_repo_unclean("${target}")
_qt_internal_apply_strict_cpp("${target}")
# Disable linking of plugins against other plugins during static regular and
# super builds. The latter causes cyclic dependencies otherwise.
set_target_properties(${target} PROPERTIES QT_DEFAULT_PLUGINS 0)
set_target_properties("${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 "${arg_TYPE}"
QT_PLUGIN_CLASS_NAME "${plugin_class_name}")
qt_handle_multi_config_output_dirs("${target}")
qt_internal_library_deprecation_level(deprecation_define)
qt_autogen_tools_initial_setup(${target})
set(static_plugin_define "")
if (arg_STATIC OR NOT QT_BUILD_SHARED_LIBS)
set(static_plugin_define "QT_STATICPLUGIN")
endif()
# Save the Qt module in the plug-in's properties
if(NOT plugin_type_escaped STREQUAL "qml_plugin")
qt_get_module_for_plugin("${target}" "${plugin_type_escaped}")
get_target_property(qt_module "${target}" QT_MODULE)
set(plugin_install_package_suffix "${qt_module}")
endif()
# Add the plug-in to the list of plug-ins of this module
if(TARGET "${qt_module}")
set_property(TARGET "${qt_module}" APPEND PROPERTY QT_PLUGINS "${target}")
endif()
# Change the configuration file install location for qml plugins into the Qml package location.
if(plugin_type_escaped STREQUAL "qml_plugin" AND TARGET "${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 current location.
if(plugin_install_package_suffix)
set_target_properties("${target}" PROPERTIES
_qt_plugin_install_package_suffix "${plugin_install_package_suffix}")
endif()
# TODO: This is a bit too coarse for generic plugins.
# The generic plugins should also be enabled by default, once QTBUG-87861 is fixed.
# 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 "generic" OR plugin_type_escaped STREQUAL "platforms")
set(_default_plugin 0)
else()
set(_default_plugin 1)
endif()
if (DEFINED arg_DEFAULT_IF)
if (NOT ${arg_DEFAULT_IF})
set(_default_plugin 0)
else()
set(_default_plugin 1)
endif()
endif()
add_dependencies(qt_plugins "${target}")
if(arg_TYPE STREQUAL "platforms")
add_dependencies(qpa_plugins "${target}")
if(_default_plugin)
add_dependencies(qpa_default_plugins "${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:${module_repo_include_dir}>"
${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}
QT_DEPRECATED_WARNINGS
${deprecation_define}
"${static_plugin_define}"
QT_PLUGIN
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}
)
if(NOT ${arg_EXCEPTIONS})
qt_internal_set_no_exceptions_flags("${target}")
endif()
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}")
qt_generate_plugin_pri_file("${target}" pri_file)
if (NOT arg_SKIP_INSTALL)
# Handle creation of cmake files for consumers of find_package().
# If we are part of a Qt module, the plugin cmake files are installed as part of that
# module.
# For qml plugins, they are all installed into the QtQml package location for automatic
# discovery.
if(plugin_install_package_suffix)
set(path_suffix "${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}
EXPORT_NAME_PREFIX ${INSTALL_CMAKE_NAMESPACE}${target}
CONFIG_INSTALL_DIR "${config_install_dir}")
configure_package_config_file(
"${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}ConfigVersion.cmake"
VERSION ${PROJECT_VERSION}
COMPATIBILITY AnyNewerVersion
)
qt_install(FILES
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}Config.cmake"
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}ConfigVersion.cmake"
DESTINATION "${config_install_dir}"
COMPONENT Devel
)
qt_install(FILES
"${pri_file}"
DESTINATION "${INSTALL_MKSPECSDIR}/modules"
)
# 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}"
EXPORT ${export_name}
RUNTIME DESTINATION "${install_directory}"
LIBRARY DESTINATION "${install_directory}"
ARCHIVE DESTINATION "${archive_install_directory}"
)
qt_install(EXPORT ${export_name}
NAMESPACE ${QT_CMAKE_EXPORT_NAMESPACE}::
DESTINATION "${config_install_dir}"
)
qt_apply_rpaths(TARGET "${target}" INSTALL_PATH "${install_directory}" RELATIVE_RPATH)
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})
qt_add_list_file_finalizer(qt_finalize_plugin ${target} "${install_directory}")
qt_internal_install_pdb_files(${target} "${install_directory}")
endfunction()
function(qt_finalize_plugin target install_directory)
# Generate .prl files for plugins of static Qt builds.
if(NOT BUILD_SHARED_LIBS)
qt_generate_prl_file(${target} "${install_directory}")
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}" "${plugin_type}" PARENT_SCOPE)
endfunction()
# Utility function to find the module to which a plug-in belongs.
# This will set the QT_MODULE target property on the plug-in - e.g. "Gui", "Sql"...
function(qt_get_module_for_plugin target target_type)
qt_internal_get_qt_all_known_modules(known_modules)
qt_get_sanitized_plugin_type("${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)
foreach(plugin_type ${plugin_types})
if("${target_type}" STREQUAL "${plugin_type}")
set_target_properties("${target}" PROPERTIES QT_MODULE "${qt_module}")
return()
endif()
endforeach()
endif()
endforeach()
message(AUTHOR_WARNING "The plug-in '${target}' does not belong to any Qt module.")
endfunction()
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