471ff20f33
Needed for the upcoming static plugin mechanism, where we have to extract the list of Qt module dependencies of a target and then extract the plugins associated with those modules. To do that we need to recursively collect the dependencies of a given target. Rename the moved functions to contain the __qt_internal prefix. Also rename the existing QtPublicTargetsHelpers.cmake into QtPlatformTargetHelpers.cmake to avoid confusion with the newly introduced QtPublicTargetHelpers.cmake. Task-number: QTBUG-92933 Change-Id: I48b5b6a8718a3424f59ca60f11fc9e97a809765d Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
192 lines
8.2 KiB
CMake
192 lines
8.2 KiB
CMake
# Collects the library dependencies of a target.
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# As well as rcc object file dependencies.
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# This takes into account transitive usage requirements.
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function(qt_collect_libs target libs_out_var rcc_objects_out_var)
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__qt_internal_walk_libs("${target}" "${libs_out_var}"
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"${rcc_objects_out_var}" "qt_collect_libs_dict" "collect_libs")
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set("${libs_out_var}" "${${libs_out_var}}" PARENT_SCOPE)
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set(${rcc_objects_out_var} "${${rcc_objects_out_var}}" PARENT_SCOPE)
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endfunction()
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# Generate a qmake .prl file for the given target.
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# The install_dir argument is a relative path, for example "lib".
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function(qt_generate_prl_file target install_dir)
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get_target_property(target_type ${target} TYPE)
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if(target_type STREQUAL "INTERFACE_LIBRARY")
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return()
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endif()
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unset(prl_config)
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set(is_static FALSE)
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if(target_type STREQUAL "STATIC_LIBRARY")
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list(APPEND prl_config static)
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set(is_static TRUE)
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elseif(target_type STREQUAL "SHARED_LIBRARY")
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list(APPEND prl_config shared)
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endif()
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if (NOT target_type STREQUAL "INTERFACE_LIBRARY")
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get_target_property(is_fw ${target} FRAMEWORK)
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if(is_fw)
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list(APPEND prl_config lib_bundle)
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endif()
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endif()
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list(JOIN prl_config " " prl_config)
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set(rcc_objects "")
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set(prl_step1_content_libs "")
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if(NOT is_static AND WIN32)
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# Do nothing. Prl files for shared libraries on Windows shouldn't have the libs listed,
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# as per qt_build_config.prf and the conditional CONFIG+=explicitlib assignment.
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else()
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set(prl_libs "")
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qt_collect_libs(${target} prl_libs prl_rcc_objects)
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if(prl_libs)
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set(prl_step1_content_libs "QMAKE_PRL_LIBS_FOR_CMAKE = ${prl_libs}\n")
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endif()
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if(prl_rcc_objects)
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list(APPEND rcc_objects ${prl_rcc_objects})
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endif()
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endif()
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if(rcc_objects AND QT_WILL_INSTALL)
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list(TRANSFORM rcc_objects PREPEND "$$[QT_INSTALL_PREFIX]/")
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endif()
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# Generate a preliminary .prl file that contains absolute paths to all libraries
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if(MINGW)
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# For MinGW, qmake doesn't have a lib prefix in prl files.
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set(prefix_for_final_prl_name "")
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else()
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set(prefix_for_final_prl_name "$<TARGET_FILE_PREFIX:${target}>")
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endif()
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# For frameworks, the prl file should be placed under the Resources subdir.
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get_target_property(is_framework ${target} FRAMEWORK)
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if(is_framework)
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get_target_property(fw_version ${target} FRAMEWORK_VERSION)
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string(APPEND prefix_for_final_prl_name "Versions/${fw_version}/Resources/")
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endif()
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# What follows is a complicated setup for generating configuration-specific
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# prl files. It has to be this way, because add_custom_command doesn't support
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# generator expressions in OUTPUT or DEPENDS.
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# To circumvent that, we create well known file names with file(GENERATE)
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# with configuration specific content, which are then fed to add_custom_command
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# that uses these genex-less file names. The actual command will extract the info
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# from the configuration-specific files, and create a properly named final prl file.
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# The file is named according to a pattern, that is then used in the
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# add_custom_command.
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set(prl_step1_name_prefix "preliminary_prl_for_${target}_step1_")
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set(prl_step1_name_suffix ".prl" )
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qt_path_join(prl_step1_path
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"${CMAKE_CURRENT_BINARY_DIR}"
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"${prl_step1_name_prefix}$<CONFIG>${prl_step1_name_suffix}")
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# Same, except instead of containing the prl contents, it will contain the final prl file
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# name computed via a generator expression.
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set(prl_meta_info_name_prefix "preliminary_prl_meta_info_for_${target}_")
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set(prl_meta_info_name_suffix ".txt")
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qt_path_join(prl_meta_info_path
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"${CMAKE_CURRENT_BINARY_DIR}"
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"${prl_meta_info_name_prefix}$<CONFIG>${prl_meta_info_name_suffix}")
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# The final prl file name that will be embedded in the file above.
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set(final_prl_file_name "${prefix_for_final_prl_name}$<TARGET_FILE_BASE_NAME:${target}>")
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if(ANDROID)
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string(APPEND final_prl_file_name "_${CMAKE_ANDROID_ARCH_ABI}")
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endif()
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string(APPEND final_prl_file_name ".prl")
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qt_path_join(final_prl_file_path "${QT_BUILD_DIR}/${install_dir}" "${final_prl_file_name}")
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# Generate the prl content and its final file name into configuration specific files
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# whose names we know, and can be used in add_custom_command.
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set(prl_step1_content
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"RCC_OBJECTS = ${rcc_objects}
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QMAKE_PRL_BUILD_DIR = ${CMAKE_CURRENT_BINARY_DIR}
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QMAKE_PRL_TARGET = $<TARGET_LINKER_FILE_NAME:${target}>
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QMAKE_PRL_CONFIG = ${prl_config}
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QMAKE_PRL_VERSION = ${PROJECT_VERSION}
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${prl_step1_content_libs}
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")
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file(GENERATE
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OUTPUT "${prl_step1_path}"
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CONTENT "${prl_step1_content}")
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file(GENERATE
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OUTPUT "${prl_meta_info_path}"
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CONTENT
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"FINAL_PRL_FILE_PATH = ${final_prl_file_path}")
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set(library_prefixes ${CMAKE_SHARED_LIBRARY_PREFIX} ${CMAKE_STATIC_LIBRARY_PREFIX})
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set(library_suffixes
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${CMAKE_SHARED_LIBRARY_SUFFIX}
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${CMAKE_EXTRA_SHARED_LIBRARY_SUFFIXES}
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${CMAKE_STATIC_LIBRARY_SUFFIX})
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if(QT_GENERATOR_IS_MULTI_CONFIG)
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set(configs ${CMAKE_CONFIGURATION_TYPES})
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else()
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set(configs ${CMAKE_BUILD_TYPE})
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endif()
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set(qt_lib_dirs "${QT_BUILD_DIR}/${INSTALL_LIBDIR}")
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if(QT_WILL_INSTALL)
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list(APPEND qt_lib_dirs
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"${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_LIBDIR}")
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endif()
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foreach(config ${configs})
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# Output file for dependency tracking, and which will contain the final content.
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qt_path_join(prl_step2_path
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"${CMAKE_CURRENT_BINARY_DIR}" "preliminary_prl_for_${target}_step2_${config}.prl")
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# Input dependency names that are constructed for each config manually
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# (no genexes allowed).
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qt_path_join(prl_step1_path
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"${CMAKE_CURRENT_BINARY_DIR}"
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"${prl_step1_name_prefix}${config}${prl_step1_name_suffix}")
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qt_path_join(prl_meta_info_path
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"${CMAKE_CURRENT_BINARY_DIR}"
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"${prl_meta_info_name_prefix}${config}${prl_meta_info_name_suffix}")
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add_custom_command(
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OUTPUT "${prl_step2_path}"
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DEPENDS "${prl_step1_path}"
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"${prl_meta_info_path}"
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"${QT_CMAKE_DIR}/QtFinishPrlFile.cmake"
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"${QT_CMAKE_DIR}/QtGenerateLibHelpers.cmake"
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COMMAND ${CMAKE_COMMAND}
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"-DIN_FILE=${prl_step1_path}"
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"-DIN_META_FILE=${prl_meta_info_path}"
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"-DOUT_FILE=${prl_step2_path}"
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"-DLIBRARY_PREFIXES=${library_prefixes}"
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"-DLIBRARY_SUFFIXES=${library_suffixes}"
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"-DLINK_LIBRARY_FLAG=${CMAKE_LINK_LIBRARY_FLAG}"
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"-DQT_LIB_DIRS=${qt_lib_dirs}"
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-P "${QT_CMAKE_DIR}/QtFinishPrlFile.cmake"
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VERBATIM
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COMMENT "Generating prl file for target ${target}"
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)
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# Tell the target to depend on the preliminary prl file, to ensure the custom command
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# is executed. As a side-effect, this will also create the final prl file that
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# is named appropriately. It should not be specified as a BYPRODUCT.
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# This allows proper per-file dependency tracking, without having to resort on a POST_BUILD
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# step, which means that relinking would happen as well as transitive rebuilding of any
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# dependees.
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# This is inspired by https://gitlab.kitware.com/cmake/cmake/-/issues/20842
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target_sources(${target} PRIVATE "${prl_step2_path}")
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endforeach()
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# Installation of the .prl file happens globally elsewhere,
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# because we have no clue here what the actual file name is.
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# What we know however, is the directory where the prl file is created.
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# Save that for later, to install all prl files from that directory.
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get_property(prl_install_dirs GLOBAL PROPERTY QT_PRL_INSTALL_DIRS)
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if(NOT install_dir IN_LIST prl_install_dirs)
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set_property(GLOBAL APPEND PROPERTY QT_PRL_INSTALL_DIRS "${install_dir}")
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endif()
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endfunction()
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