qt5base-lts/cmake/QtPrlHelpers.cmake

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# Collects the library dependencies of a target.
CMake: Fix resource objects story in static prl files The CMake build of Qt intends to improve the developer experience in regards to static Qt builds and Qt resource files. Specifically with a CMake build of Qt, Qt developers don't have to manually call Q_INIT_RESOURCE anymore. For details see the following commits e343affd6345ef8db041789a96016c3a84830dc9 e817ac3d68295fc0670ccede4df08bf1c7e627d2 4ab54320817ebbb465af343514d21139a654aed3 The last commit's implementation is incomplete though. To ensure successful linking, each target's prl file should contain not only the resource object files that are assigned to the target, but also all resource object files of the target's dependencies. To achieve that, qt_collect_libs will now recursively collect all resource object files assigned to the QT_RCC_OBJECTS property of each dependency. Note this implementation is still incomplete. We do not export rcc object file information in the CMake Targets files. That means that when configuring qtdeclarative in a non-top-level build, the generated Qml prl file will not contain references to Core's mimetypes resource object file, etc. So with the current change, only the object files that are part of the current CMake configuration build are tracked. Exporting the resource object files locations proves in a format usable for prl files proves to be difficult (due to CMake not supporting exporting genexes in random properties) and will have to be addressed in a separate change. Amends 4ab54320817ebbb465af343514d21139a654aed3 Task-number: QTBUG-88425 Change-Id: I546655bdfdf7aa86a8df9aadfc054fa415130a33 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-11-16 17:42:23 +00:00
# As well as rcc object file dependencies.
# This takes into account transitive usage requirements.
CMake: Fix resource objects story in static prl files The CMake build of Qt intends to improve the developer experience in regards to static Qt builds and Qt resource files. Specifically with a CMake build of Qt, Qt developers don't have to manually call Q_INIT_RESOURCE anymore. For details see the following commits e343affd6345ef8db041789a96016c3a84830dc9 e817ac3d68295fc0670ccede4df08bf1c7e627d2 4ab54320817ebbb465af343514d21139a654aed3 The last commit's implementation is incomplete though. To ensure successful linking, each target's prl file should contain not only the resource object files that are assigned to the target, but also all resource object files of the target's dependencies. To achieve that, qt_collect_libs will now recursively collect all resource object files assigned to the QT_RCC_OBJECTS property of each dependency. Note this implementation is still incomplete. We do not export rcc object file information in the CMake Targets files. That means that when configuring qtdeclarative in a non-top-level build, the generated Qml prl file will not contain references to Core's mimetypes resource object file, etc. So with the current change, only the object files that are part of the current CMake configuration build are tracked. Exporting the resource object files locations proves in a format usable for prl files proves to be difficult (due to CMake not supporting exporting genexes in random properties) and will have to be addressed in a separate change. Amends 4ab54320817ebbb465af343514d21139a654aed3 Task-number: QTBUG-88425 Change-Id: I546655bdfdf7aa86a8df9aadfc054fa415130a33 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-11-16 17:42:23 +00:00
function(qt_collect_libs target libs_out_var rcc_objects_out_var)
__qt_internal_walk_libs("${target}" "${libs_out_var}"
"${rcc_objects_out_var}" "qt_collect_libs_dict" "collect_libs")
CMake: Fix resource objects story in static prl files The CMake build of Qt intends to improve the developer experience in regards to static Qt builds and Qt resource files. Specifically with a CMake build of Qt, Qt developers don't have to manually call Q_INIT_RESOURCE anymore. For details see the following commits e343affd6345ef8db041789a96016c3a84830dc9 e817ac3d68295fc0670ccede4df08bf1c7e627d2 4ab54320817ebbb465af343514d21139a654aed3 The last commit's implementation is incomplete though. To ensure successful linking, each target's prl file should contain not only the resource object files that are assigned to the target, but also all resource object files of the target's dependencies. To achieve that, qt_collect_libs will now recursively collect all resource object files assigned to the QT_RCC_OBJECTS property of each dependency. Note this implementation is still incomplete. We do not export rcc object file information in the CMake Targets files. That means that when configuring qtdeclarative in a non-top-level build, the generated Qml prl file will not contain references to Core's mimetypes resource object file, etc. So with the current change, only the object files that are part of the current CMake configuration build are tracked. Exporting the resource object files locations proves in a format usable for prl files proves to be difficult (due to CMake not supporting exporting genexes in random properties) and will have to be addressed in a separate change. Amends 4ab54320817ebbb465af343514d21139a654aed3 Task-number: QTBUG-88425 Change-Id: I546655bdfdf7aa86a8df9aadfc054fa415130a33 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-11-16 17:42:23 +00:00
set("${libs_out_var}" "${${libs_out_var}}" PARENT_SCOPE)
set(${rcc_objects_out_var} "${${rcc_objects_out_var}}" PARENT_SCOPE)
endfunction()
# Generate a qmake .prl file for the given target.
# The install_dir argument is a relative path, for example "lib".
function(qt_generate_prl_file target install_dir)
get_target_property(target_type ${target} TYPE)
if(target_type STREQUAL "INTERFACE_LIBRARY")
return()
endif()
unset(prl_config)
set(is_static FALSE)
if(target_type STREQUAL "STATIC_LIBRARY")
list(APPEND prl_config static)
set(is_static TRUE)
elseif(target_type STREQUAL "SHARED_LIBRARY")
list(APPEND prl_config shared)
endif()
if (NOT target_type STREQUAL "INTERFACE_LIBRARY")
get_target_property(is_fw ${target} FRAMEWORK)
if(is_fw)
list(APPEND prl_config lib_bundle)
endif()
endif()
list(JOIN prl_config " " prl_config)
CMake: Fix resource objects story in static prl files The CMake build of Qt intends to improve the developer experience in regards to static Qt builds and Qt resource files. Specifically with a CMake build of Qt, Qt developers don't have to manually call Q_INIT_RESOURCE anymore. For details see the following commits e343affd6345ef8db041789a96016c3a84830dc9 e817ac3d68295fc0670ccede4df08bf1c7e627d2 4ab54320817ebbb465af343514d21139a654aed3 The last commit's implementation is incomplete though. To ensure successful linking, each target's prl file should contain not only the resource object files that are assigned to the target, but also all resource object files of the target's dependencies. To achieve that, qt_collect_libs will now recursively collect all resource object files assigned to the QT_RCC_OBJECTS property of each dependency. Note this implementation is still incomplete. We do not export rcc object file information in the CMake Targets files. That means that when configuring qtdeclarative in a non-top-level build, the generated Qml prl file will not contain references to Core's mimetypes resource object file, etc. So with the current change, only the object files that are part of the current CMake configuration build are tracked. Exporting the resource object files locations proves in a format usable for prl files proves to be difficult (due to CMake not supporting exporting genexes in random properties) and will have to be addressed in a separate change. Amends 4ab54320817ebbb465af343514d21139a654aed3 Task-number: QTBUG-88425 Change-Id: I546655bdfdf7aa86a8df9aadfc054fa415130a33 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-11-16 17:42:23 +00:00
set(rcc_objects "")
set(prl_step1_content_libs "")
if(NOT is_static AND WIN32)
# Do nothing. Prl files for shared libraries on Windows shouldn't have the libs listed,
# as per qt_build_config.prf and the conditional CONFIG+=explicitlib assignment.
else()
set(prl_libs "")
qt_collect_libs(${target} prl_libs prl_rcc_objects)
if(prl_libs)
set(prl_step1_content_libs "QMAKE_PRL_LIBS_FOR_CMAKE = ${prl_libs}\n")
endif()
if(prl_rcc_objects)
list(APPEND rcc_objects ${prl_rcc_objects})
endif()
endif()
if(rcc_objects AND QT_WILL_INSTALL)
list(TRANSFORM rcc_objects PREPEND "$$[QT_INSTALL_PREFIX]/")
CMake: Fix resource objects story in static prl files The CMake build of Qt intends to improve the developer experience in regards to static Qt builds and Qt resource files. Specifically with a CMake build of Qt, Qt developers don't have to manually call Q_INIT_RESOURCE anymore. For details see the following commits e343affd6345ef8db041789a96016c3a84830dc9 e817ac3d68295fc0670ccede4df08bf1c7e627d2 4ab54320817ebbb465af343514d21139a654aed3 The last commit's implementation is incomplete though. To ensure successful linking, each target's prl file should contain not only the resource object files that are assigned to the target, but also all resource object files of the target's dependencies. To achieve that, qt_collect_libs will now recursively collect all resource object files assigned to the QT_RCC_OBJECTS property of each dependency. Note this implementation is still incomplete. We do not export rcc object file information in the CMake Targets files. That means that when configuring qtdeclarative in a non-top-level build, the generated Qml prl file will not contain references to Core's mimetypes resource object file, etc. So with the current change, only the object files that are part of the current CMake configuration build are tracked. Exporting the resource object files locations proves in a format usable for prl files proves to be difficult (due to CMake not supporting exporting genexes in random properties) and will have to be addressed in a separate change. Amends 4ab54320817ebbb465af343514d21139a654aed3 Task-number: QTBUG-88425 Change-Id: I546655bdfdf7aa86a8df9aadfc054fa415130a33 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-11-16 17:42:23 +00:00
endif()
# Generate a preliminary .prl file that contains absolute paths to all libraries
if(MINGW)
# For MinGW, qmake doesn't have a lib prefix in prl files.
set(prefix_for_final_prl_name "")
else()
set(prefix_for_final_prl_name "$<TARGET_FILE_PREFIX:${target}>")
endif()
# For frameworks, the prl file should be placed under the Resources subdir.
get_target_property(is_framework ${target} FRAMEWORK)
if(is_framework)
get_target_property(fw_version ${target} FRAMEWORK_VERSION)
string(APPEND prefix_for_final_prl_name "Versions/${fw_version}/Resources/")
endif()
# What follows is a complicated setup for generating configuration-specific
# prl files. It has to be this way, because add_custom_command doesn't support
# generator expressions in OUTPUT or DEPENDS.
# To circumvent that, we create well known file names with file(GENERATE)
# with configuration specific content, which are then fed to add_custom_command
# that uses these genex-less file names. The actual command will extract the info
# from the configuration-specific files, and create a properly named final prl file.
# The file is named according to a pattern, that is then used in the
# add_custom_command.
set(prl_step1_name_prefix "preliminary_prl_for_${target}_step1_")
set(prl_step1_name_suffix ".prl" )
qt_path_join(prl_step1_path
"${CMAKE_CURRENT_BINARY_DIR}"
"${prl_step1_name_prefix}$<CONFIG>${prl_step1_name_suffix}")
# Same, except instead of containing the prl contents, it will contain the final prl file
# name computed via a generator expression.
set(prl_meta_info_name_prefix "preliminary_prl_meta_info_for_${target}_")
set(prl_meta_info_name_suffix ".txt")
qt_path_join(prl_meta_info_path
"${CMAKE_CURRENT_BINARY_DIR}"
"${prl_meta_info_name_prefix}$<CONFIG>${prl_meta_info_name_suffix}")
# The final prl file name that will be embedded in the file above.
set(final_prl_file_name "${prefix_for_final_prl_name}$<TARGET_FILE_BASE_NAME:${target}>")
if(ANDROID)
string(APPEND final_prl_file_name "_${CMAKE_ANDROID_ARCH_ABI}")
endif()
string(APPEND final_prl_file_name ".prl")
qt_path_join(final_prl_file_path "${QT_BUILD_DIR}/${install_dir}" "${final_prl_file_name}")
# Generate the prl content and its final file name into configuration specific files
# whose names we know, and can be used in add_custom_command.
set(prl_step1_content
"RCC_OBJECTS = ${rcc_objects}
QMAKE_PRL_BUILD_DIR = ${CMAKE_CURRENT_BINARY_DIR}
QMAKE_PRL_TARGET = $<TARGET_LINKER_FILE_NAME:${target}>
QMAKE_PRL_CONFIG = ${prl_config}
QMAKE_PRL_VERSION = ${PROJECT_VERSION}
CMake: Fix resource objects story in static prl files The CMake build of Qt intends to improve the developer experience in regards to static Qt builds and Qt resource files. Specifically with a CMake build of Qt, Qt developers don't have to manually call Q_INIT_RESOURCE anymore. For details see the following commits e343affd6345ef8db041789a96016c3a84830dc9 e817ac3d68295fc0670ccede4df08bf1c7e627d2 4ab54320817ebbb465af343514d21139a654aed3 The last commit's implementation is incomplete though. To ensure successful linking, each target's prl file should contain not only the resource object files that are assigned to the target, but also all resource object files of the target's dependencies. To achieve that, qt_collect_libs will now recursively collect all resource object files assigned to the QT_RCC_OBJECTS property of each dependency. Note this implementation is still incomplete. We do not export rcc object file information in the CMake Targets files. That means that when configuring qtdeclarative in a non-top-level build, the generated Qml prl file will not contain references to Core's mimetypes resource object file, etc. So with the current change, only the object files that are part of the current CMake configuration build are tracked. Exporting the resource object files locations proves in a format usable for prl files proves to be difficult (due to CMake not supporting exporting genexes in random properties) and will have to be addressed in a separate change. Amends 4ab54320817ebbb465af343514d21139a654aed3 Task-number: QTBUG-88425 Change-Id: I546655bdfdf7aa86a8df9aadfc054fa415130a33 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-11-16 17:42:23 +00:00
${prl_step1_content_libs}
")
file(GENERATE
OUTPUT "${prl_step1_path}"
CONTENT "${prl_step1_content}")
file(GENERATE
OUTPUT "${prl_meta_info_path}"
CONTENT
"FINAL_PRL_FILE_PATH = ${final_prl_file_path}")
set(library_prefixes ${CMAKE_SHARED_LIBRARY_PREFIX} ${CMAKE_STATIC_LIBRARY_PREFIX})
set(library_suffixes
${CMAKE_SHARED_LIBRARY_SUFFIX}
${CMAKE_EXTRA_SHARED_LIBRARY_SUFFIXES}
${CMAKE_STATIC_LIBRARY_SUFFIX})
if(QT_GENERATOR_IS_MULTI_CONFIG)
set(configs ${CMAKE_CONFIGURATION_TYPES})
else()
set(configs ${CMAKE_BUILD_TYPE})
endif()
set(qt_lib_dirs "${QT_BUILD_DIR}/${INSTALL_LIBDIR}")
if(QT_WILL_INSTALL)
list(APPEND qt_lib_dirs
"${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_LIBDIR}")
endif()
foreach(config ${configs})
# Output file for dependency tracking, and which will contain the final content.
qt_path_join(prl_step2_path
"${CMAKE_CURRENT_BINARY_DIR}" "preliminary_prl_for_${target}_step2_${config}.prl")
# Input dependency names that are constructed for each config manually
# (no genexes allowed).
qt_path_join(prl_step1_path
"${CMAKE_CURRENT_BINARY_DIR}"
"${prl_step1_name_prefix}${config}${prl_step1_name_suffix}")
qt_path_join(prl_meta_info_path
"${CMAKE_CURRENT_BINARY_DIR}"
"${prl_meta_info_name_prefix}${config}${prl_meta_info_name_suffix}")
if(MSVC)
set(link_library_flag "-l")
file(TO_CMAKE_PATH "$ENV{LIB};${CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES}" implicit_link_directories)
else()
set(link_library_flag ${CMAKE_LINK_LIBRARY_FLAG})
set(implicit_link_directories ${CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES})
endif()
add_custom_command(
OUTPUT "${prl_step2_path}"
DEPENDS "${prl_step1_path}"
"${prl_meta_info_path}"
"${QT_CMAKE_DIR}/QtFinishPrlFile.cmake"
"${QT_CMAKE_DIR}/QtGenerateLibHelpers.cmake"
COMMAND ${CMAKE_COMMAND}
"-DIN_FILE=${prl_step1_path}"
"-DIN_META_FILE=${prl_meta_info_path}"
"-DOUT_FILE=${prl_step2_path}"
"-DLIBRARY_PREFIXES=${library_prefixes}"
"-DLIBRARY_SUFFIXES=${library_suffixes}"
"-DLINK_LIBRARY_FLAG=${link_library_flag}"
"-DQT_LIB_DIRS=${qt_lib_dirs}"
"-DIMPLICIT_LINK_DIRECTORIES=${implicit_link_directories}"
-P "${QT_CMAKE_DIR}/QtFinishPrlFile.cmake"
VERBATIM
COMMENT "Generating prl file for target ${target}"
)
# Tell the target to depend on the preliminary prl file, to ensure the custom command
# is executed. As a side-effect, this will also create the final prl file that
# is named appropriately. It should not be specified as a BYPRODUCT.
# This allows proper per-file dependency tracking, without having to resort on a POST_BUILD
# step, which means that relinking would happen as well as transitive rebuilding of any
# dependees.
# This is inspired by https://gitlab.kitware.com/cmake/cmake/-/issues/20842
target_sources(${target} PRIVATE "${prl_step2_path}")
endforeach()
# Installation of the .prl file happens globally elsewhere,
# because we have no clue here what the actual file name is.
# What we know however, is the directory where the prl file is created.
# Save that for later, to install all prl files from that directory.
get_property(prl_install_dirs GLOBAL PROPERTY QT_PRL_INSTALL_DIRS)
if(NOT install_dir IN_LIST prl_install_dirs)
set_property(GLOBAL APPEND PROPERTY QT_PRL_INSTALL_DIRS "${install_dir}")
endif()
endfunction()