diff options
Diffstat (limited to 'cmake/QtToolHelpers.cmake')
| -rw-r--r-- | cmake/QtToolHelpers.cmake | 564 |
1 files changed, 413 insertions, 151 deletions
diff --git a/cmake/QtToolHelpers.cmake b/cmake/QtToolHelpers.cmake index 86621f4871..7dd507c0ee 100644 --- a/cmake/QtToolHelpers.cmake +++ b/cmake/QtToolHelpers.cmake @@ -1,6 +1,7 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: BSD-3-Clause + # This function is used to define a "Qt tool", such as moc, uic or rcc. -# The BOOTSTRAP option allows building it as standalone program, otherwise -# it will be linked against QtCore. # # USER_FACING can be passed to mark the tool as a program that is supposed to be # started directly by users. @@ -14,6 +15,13 @@ # INSTALL_VERSIONED_LINK # Prefix build only. On installation, create a versioned hard-link of the installed file. # E.g. create a link of "bin/qmake6" to "bin/qmake". +# TRY_RUN +# On Windows, it creates a helper batch script that tests whether the tool can be executed +# successfully or not. If not, build halts and an error will be show, with tips on what +# might be cause, and how to fix it. TRY_RUN is disabled when cross-compiling. +# TRY_RUN_FLAGS +# Command line flags that are going to be passed to the tool for testing its correctness. +# If no flags were given, we default to `-v`. # # One-value Arguments: # EXTRA_CMAKE_FILES @@ -28,153 +36,50 @@ # TOOLS_TARGET # Specifies the module this tool belongs to. The module's Qt6${module}Tools.cmake file # will then contain targets for this tool. -# +# CORE_LIBRARY +# The argument accepts 'Bootstrap' or 'None' values. If the argument value is set to +# 'Bootstrap' the Qt::Bootstrap library is linked to the executable instead of Qt::Core. +# The 'None' value points that core library is not necessary and avoids linking neither +# Qt::Core or Qt::Bootstrap libraries. Otherwise the Qt::Core library will be publicly +# linked to the executable target by default. function(qt_internal_add_tool target_name) qt_tool_target_to_name(name ${target_name}) - set(option_keywords BOOTSTRAP NO_INSTALL USER_FACING INSTALL_VERSIONED_LINK EXCEPTIONS) + set(option_keywords + NO_INSTALL + USER_FACING + INSTALL_VERSIONED_LINK + EXCEPTIONS + NO_UNITY_BUILD + TRY_RUN) set(one_value_keywords TOOLS_TARGET INSTALL_DIR + CORE_LIBRARY + TRY_RUN_FLAGS ${__default_target_info_args}) set(multi_value_keywords EXTRA_CMAKE_FILES EXTRA_CMAKE_INCLUDES + PUBLIC_LIBRARIES ${__default_private_args}) - qt_parse_all_arguments(arg "qt_internal_add_tool" "${option_keywords}" - "${one_value_keywords}" - "${multi_value_keywords}" ${ARGN}) - - # Handle case when a tool does not belong to a module and it can't be built either (like - # during a cross-compile). - if(NOT arg_TOOLS_TARGET AND NOT QT_WILL_BUILD_TOOLS) - message(FATAL_ERROR "The tool \"${name}\" has not been assigned to a module via" - " TOOLS_TARGET (so it can't be found) and it can't be built" - " (QT_WILL_BUILD_TOOLS is ${QT_WILL_BUILD_TOOLS}).") - endif() - - if(CMAKE_CROSSCOMPILING AND QT_BUILD_TOOLS_WHEN_CROSSCOMPILING AND (name STREQUAL target_name)) - message(FATAL_ERROR - "qt_internal_add_tool must be passed a target obtained from qt_get_tool_target_name.") - endif() - - set(full_name "${QT_CMAKE_EXPORT_NAMESPACE}::${name}") - set(imported_tool_target_already_found FALSE) - # This condition can only be TRUE if a previous find_package(Qt6${arg_TOOLS_TARGET}Tools) - # was already done. That can happen if we are cross compiling or QT_FORCE_FIND_TOOLS was ON. - # In such a case, we need to exit early if we're not going to also cross-build the tools. - if(TARGET ${full_name}) - get_property(path TARGET ${full_name} PROPERTY LOCATION) - message(STATUS "Tool '${full_name}' was found at ${path}.") - set(imported_tool_target_already_found TRUE) - if(NOT QT_WILL_BUILD_TOOLS) - return() - endif() - endif() + cmake_parse_arguments(PARSE_ARGV 1 arg + "${option_keywords}" + "${one_value_keywords}" + "${multi_value_keywords}") + _qt_internal_validate_all_args_are_parsed(arg) - # We need to search for the host Tools package when: - # - doing a cross-build and tools are not cross-built - # - doing a cross-build and tools ARE cross-built - # - QT_FORCE_FIND_TOOLS is ON - # This collapses to the condition below. - # As an optimiziation, we don't search for the package one more time if the target - # was already brought into scope from a previous find_package. - set(search_for_host_package FALSE) - if(NOT QT_WILL_BUILD_TOOLS OR QT_BUILD_TOOLS_WHEN_CROSSCOMPILING) - set(search_for_host_package TRUE) - endif() - if(search_for_host_package AND NOT imported_tool_target_already_found) - set(tools_package_name "Qt6${arg_TOOLS_TARGET}Tools") - message(STATUS "Searching for tool '${full_name}' in package ${tools_package_name}.") - - # Create the tool targets, even if QT_NO_CREATE_TARGETS is set. - # Otherwise targets like Qt6::moc are not available in a top-level cross-build. - set(BACKUP_QT_NO_CREATE_TARGETS ${QT_NO_CREATE_TARGETS}) - set(QT_NO_CREATE_TARGETS OFF) - - # When cross-compiling, we want to search for Tools packages in QT_HOST_PATH. - # To do that, we override CMAKE_PREFIX_PATH and CMAKE_FIND_ROOT_PATH. - # - # We don't use find_package + PATHS option because any recursive find_dependency call - # inside a Tools package would not inherit the initial PATHS value given. - # TODO: Potentially we could set a global __qt_cmake_host_dir var like we currently - # do with _qt_cmake_dir in Qt6Config and change all our host tool find_package calls - # everywhere to specify that var in PATHS. - # - # Note though that due to path rerooting issue in - # https://gitlab.kitware.com/cmake/cmake/-/issues/21937 - # we have to append a lib/cmake suffix to CMAKE_PREFIX_PATH so the value does not get - # rerooted on top of CMAKE_FIND_ROOT_PATH. - # Use QT_HOST_PATH_CMAKE_DIR for the suffix when available (it would be set by - # the qt.toolchain.cmake file when building other repos or given by the user when - # configuring qtbase) or derive it from from the Qt6HostInfo package which is - # found in QtSetup. - set(${tools_package_name}_BACKUP_CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH}) - set(${tools_package_name}_BACKUP_CMAKE_FIND_ROOT_PATH "${CMAKE_FIND_ROOT_PATH}") - if(QT_HOST_PATH_CMAKE_DIR) - set(CMAKE_PREFIX_PATH "${QT_HOST_PATH_CMAKE_DIR}") - elseif(Qt${PROJECT_VERSION_MAJOR}HostInfo_DIR) - get_filename_component(qt_host_path_cmake_dir_absolute - "${Qt${PROJECT_VERSION_MAJOR}HostInfo_DIR}/.." ABSOLUTE) - set(CMAKE_PREFIX_PATH "${qt_host_path_cmake_dir_absolute}") - else() - # This should never happen, serves as an assert. - message(FATAL_ERROR - "Neither QT_HOST_PATH_CMAKE_DIR nor " - "Qt${PROJECT_VERSION_MAJOR}HostInfo_DIR} available.") - endif() - list(PREPEND CMAKE_FIND_ROOT_PATH "${QT_HOST_PATH}") + qt_internal_find_tool(will_build_tools ${target_name} "${arg_TOOLS_TARGET}") - find_package( - ${tools_package_name} - ${PROJECT_VERSION} - NO_PACKAGE_ROOT_PATH - NO_CMAKE_ENVIRONMENT_PATH - NO_SYSTEM_ENVIRONMENT_PATH - NO_CMAKE_PACKAGE_REGISTRY - NO_CMAKE_SYSTEM_PATH - NO_CMAKE_SYSTEM_PACKAGE_REGISTRY) - - # Restore backups. - set(CMAKE_FIND_ROOT_PATH "${${tools_package_name}_BACKUP_CMAKE_FIND_ROOT_PATH}") - set(CMAKE_PREFIX_PATH "${${tools_package_name}_BACKUP_CMAKE_PREFIX_PATH}") - set(QT_NO_CREATE_TARGETS ${BACKUP_QT_NO_CREATE_TARGETS}) - - if(${${tools_package_name}_FOUND} AND TARGET ${full_name}) - # Even if the tool is already visible, make sure that our modules remain associated - # with the tools. - qt_internal_append_known_modules_with_tools("${arg_TOOLS_TARGET}") - get_property(path TARGET ${full_name} PROPERTY LOCATION) - message(STATUS "${full_name} was found at ${path} using package ${tools_package_name}.") - if (NOT QT_BUILD_TOOLS_WHEN_CROSSCOMPILING) - return() - endif() - endif() - endif() - - if(NOT QT_WILL_BUILD_TOOLS) - message(FATAL_ERROR "The tool \"${full_name}\" was not found in the " - "${tools_package_name} package. " - "Package found: ${${tools_package_name}_FOUND}") - else() - if(QT_BUILD_TOOLS_WHEN_CROSSCOMPILING) - message(STATUS "Tool '${target_name}' will be cross-built from source.") - else() - message(STATUS "Tool '${full_name}' will be built from source.") - endif() + if(NOT will_build_tools) + return() endif() set(disable_autogen_tools "${arg_DISABLE_AUTOGEN_TOOLS}") - if (arg_BOOTSTRAP) - set(corelib ${QT_CMAKE_EXPORT_NAMESPACE}::Bootstrap) + set(corelib "") + if(arg_CORE_LIBRARY STREQUAL "Bootstrap" OR arg_CORE_LIBRARY STREQUAL "None") + set(corelib CORE_LIBRARY ${arg_CORE_LIBRARY}) list(APPEND disable_autogen_tools "uic" "moc" "rcc") - else() - set(corelib ${QT_CMAKE_EXPORT_NAMESPACE}::Core) - endif() - - set(bootstrap "") - if(arg_BOOTSTRAP) - set(bootstrap BOOTSTRAP) endif() set(exceptions "") @@ -189,33 +94,65 @@ function(qt_internal_add_tool target_name) set(output_dir "${QT_BUILD_DIR}/${install_dir}") + if(arg_PUBLIC_LIBRARIES) + message(WARNING + "qt_internal_add_tool's PUBLIC_LIBRARIES option is deprecated, and will be " + "removed in a future Qt version. Use the LIBRARIES option instead.") + endif() + + qt_internal_library_deprecation_level(deprecation_define) + + if(arg_NO_UNITY_BUILD) + set(arg_NO_UNITY_BUILD "NO_UNITY_BUILD") + else() + set(arg_NO_UNITY_BUILD "") + endif() + qt_internal_add_executable("${target_name}" OUTPUT_DIRECTORY "${output_dir}" - ${bootstrap} ${exceptions} NO_INSTALL + ${arg_NO_UNITY_BUILD} SOURCES ${arg_SOURCES} + NO_PCH_SOURCES ${arg_NO_PCH_SOURCES} + NO_UNITY_BUILD_SOURCES ${arg_NO_UNITY_BUILD_SOURCES} INCLUDE_DIRECTORIES ${arg_INCLUDE_DIRECTORIES} DEFINES - QT_USE_QSTRINGBUILDER ${arg_DEFINES} - PUBLIC_LIBRARIES ${corelib} - LIBRARIES ${arg_LIBRARIES} Qt::PlatformToolInternal + ${deprecation_define} + ${corelib} + LIBRARIES + ${arg_LIBRARIES} + ${arg_PUBLIC_LIBRARIES} + Qt::PlatformToolInternal COMPILE_OPTIONS ${arg_COMPILE_OPTIONS} LINK_OPTIONS ${arg_LINK_OPTIONS} MOC_OPTIONS ${arg_MOC_OPTIONS} DISABLE_AUTOGEN_TOOLS ${disable_autogen_tools} - TARGET_VERSION "${arg_TARGET_VERSION}" - TARGET_PRODUCT "${arg_TARGET_PRODUCT}" - TARGET_DESCRIPTION "${arg_TARGET_DESCRIPTION}" - TARGET_COMPANY "${arg_TARGET_COMPANY}" - TARGET_COPYRIGHT "${arg_TARGET_COPYRIGHT}" + TARGET_VERSION ${arg_TARGET_VERSION} + TARGET_PRODUCT ${arg_TARGET_PRODUCT} + TARGET_DESCRIPTION ${arg_TARGET_DESCRIPTION} + TARGET_COMPANY ${arg_TARGET_COMPANY} + TARGET_COPYRIGHT ${arg_TARGET_COPYRIGHT} + # If you are putting anything after these, make sure that + # qt_set_target_info_properties knows how to process them ) qt_internal_add_target_aliases("${target_name}") _qt_internal_apply_strict_cpp("${target_name}") qt_internal_adjust_main_config_runtime_output_dir("${target_name}" "${output_dir}") + if (WIN32) + _qt_internal_generate_longpath_win32_rc_file_and_manifest("${target_name}") + endif() + + set_target_properties(${target_name} PROPERTIES + _qt_package_version "${PROJECT_VERSION}" + ) + set_property(TARGET ${target_name} + APPEND PROPERTY + EXPORT_PROPERTIES "_qt_package_version") + if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.19.0" AND QT_FEATURE_debug_and_release) set_property(TARGET "${target_name}" PROPERTY EXCLUDE_FROM_ALL "$<NOT:$<CONFIG:${QT_MULTI_CONFIG_FIRST_CONFIG}>>") @@ -230,7 +167,7 @@ function(qt_internal_add_tool target_name) if(TARGET host_tools) add_dependencies(host_tools "${target_name}") - if(bootstrap) + if(arg_CORE_LIBRARY STREQUAL "Bootstrap") add_dependencies(bootstrap_tools "${target_name}") endif() endif() @@ -288,17 +225,70 @@ function(qt_internal_add_tool target_name) endforeach() if(arg_INSTALL_VERSIONED_LINK) - qt_internal_install_versioned_link("${install_dir}" "${target_name}") + qt_internal_install_versioned_link(WORKING_DIRECTORY "${install_dir}" + TARGETS "${target_name}") endif() qt_apply_rpaths(TARGET "${target_name}" INSTALL_PATH "${install_dir}" RELATIVE_RPATH) + qt_internal_apply_staging_prefix_build_rpath_workaround() + endif() + if(arg_TRY_RUN AND WIN32 AND NOT CMAKE_CROSSCOMPILING) + if(NOT arg_TRY_RUN_FLAGS) + set(arg_TRY_RUN_FLAGS "-v") + endif() + _qt_internal_add_try_run_post_build("${target_name}" "${arg_TRY_RUN_FLAGS}") endif() qt_enable_separate_debug_info(${target_name} "${install_dir}" QT_EXECUTABLE) qt_internal_install_pdb_files(${target_name} "${install_dir}") endfunction() +function(_qt_internal_add_try_run_post_build target try_run_flags) + qt_internal_get_upper_case_main_cmake_configuration(main_cmake_configuration) + get_target_property(target_out_dir ${target} + RUNTIME_OUTPUT_DIRECTORY_${main_cmake_configuration}) + get_target_property(target_bin_dir ${target} + BINARY_DIR) + + set(try_run_scripts_path "${target_bin_dir}/${target}_try_run.bat") + # The only reason -h is passed is because some of the tools, e.g., moc + # wait for an input without any arguments. + + qt_configure_file(OUTPUT "${try_run_scripts_path}" + CONTENT "@echo off + +${target_out_dir}/${target}.exe ${try_run_flags} > nul 2>&1 + +if \"%errorlevel%\" == \"-1073741515\" ( +echo +echo '${target}' is built successfully, but some of the libraries +echo necessary for running it are missing. If you are building Qt with +echo 3rdparty libraries, make sure that you add their directory to the +echo PATH environment variable. +echo +exit /b %errorlevel% +) +echo. > ${target_bin_dir}/${target}_try_run_passed" + ) + + add_custom_command( + OUTPUT + ${target_bin_dir}/${target}_try_run_passed + DEPENDS + ${target} + COMMAND + ${CMAKE_COMMAND} -E env QT_COMMAND_LINE_PARSER_NO_GUI_MESSAGE_BOXES=1 + ${try_run_scripts_path} + COMMENT + "Testing ${target} by trying to run it." + VERBATIM + ) + + add_custom_target(${target}_try_run ALL + DEPENDS ${target_bin_dir}/${target}_try_run_passed) +endfunction() + function(qt_export_tools module_name) # Bail out when not building tools. if(NOT QT_WILL_BUILD_TOOLS) @@ -331,6 +321,8 @@ function(qt_export_tools module_name) set(extra_cmake_files "") set(extra_cmake_includes "") + set(first_tool_package_version "") + foreach(tool_name ${QT_KNOWN_MODULE_${module_name}_TOOLS}) # Specific tools can have package dependencies. # e.g. qtwaylandscanner depends on WaylandScanner (non-qt package). @@ -352,16 +344,23 @@ function(qt_export_tools module_name) list(APPEND extra_cmake_includes "${_extra_cmake_includes}") endif() - if (CMAKE_CROSSCOMPILING AND QT_BUILD_TOOLS_WHEN_CROSSCOMPILING) + if (QT_WILL_RENAME_TOOL_TARGETS) string(REGEX REPLACE "_native$" "" tool_name ${tool_name}) endif() set(extra_cmake_statements "${extra_cmake_statements} -if (NOT QT_NO_CREATE_TARGETS) +if(NOT QT_NO_CREATE_TARGETS AND ${INSTALL_CMAKE_NAMESPACE}${target}_FOUND) __qt_internal_promote_target_to_global(${INSTALL_CMAKE_NAMESPACE}::${tool_name}) endif() ") list(APPEND tool_targets "${QT_CMAKE_EXPORT_NAMESPACE}::${tool_name}") list(APPEND tool_targets_non_prefixed "${tool_name}") + + if(NOT first_tool_package_version) + qt_internal_get_package_version_of_target("${tool_name}" tool_package_version) + if(tool_package_version) + set(first_tool_package_version "${tool_package_version}") + endif() + endif() endforeach() string(APPEND extra_cmake_statements @@ -407,9 +406,30 @@ endif() "${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}Config.cmake" INSTALL_DESTINATION "${config_install_dir}" ) + + # There might be Tools packages which don't have a corresponding real module_name target, like + # WaylandScannerTools. + # In that case we'll use the package version of the first tool that belongs to that package. + if(TARGET "${module_name}") + qt_internal_get_package_version_of_target("${module_name}" tools_package_version) + elseif(first_tool_package_version) + set(tools_package_version "${first_tool_package_version}") + else() + # This should never happen, because tools_package_version should always have at least some + # value. Issue an assertion message just in case the pre-condition ever changes. + set(tools_package_version "${PROJECT_VERSION}") + if(FEATURE_developer_build) + message(WARNING + "Could not determine package version of tools package ${module_name}. " + "Defaulting to project version ${PROJECT_VERSION}.") + endif() + endif() + message(TRACE + "Exporting tools package ${module_name}Tools with package version ${tools_package_version}" + "\n included targets: ${tool_targets_non_prefixed}") write_basic_package_version_file( "${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}ConfigVersionImpl.cmake" - VERSION ${PROJECT_VERSION} + VERSION "${tools_package_version}" COMPATIBILITY AnyNewerVersion ARCH_INDEPENDENT ) @@ -457,7 +477,7 @@ endfunction() # If the user specifies to build tools when cross-compiling, then the # suffix "_native" is appended. function(qt_get_tool_target_name out_var name) - if (CMAKE_CROSSCOMPILING AND QT_BUILD_TOOLS_WHEN_CROSSCOMPILING) + if (QT_WILL_RENAME_TOOL_TARGETS) set(${out_var} ${name}_native PARENT_SCOPE) else() set(${out_var} ${name} PARENT_SCOPE) @@ -468,20 +488,46 @@ endfunction() # This is the inverse of qt_get_tool_target_name. function(qt_tool_target_to_name out_var target) set(name ${target}) - if (CMAKE_CROSSCOMPILING AND QT_BUILD_TOOLS_WHEN_CROSSCOMPILING) + if (QT_WILL_RENAME_TOOL_TARGETS) string(REGEX REPLACE "_native$" "" name ${target}) endif() set(${out_var} ${name} PARENT_SCOPE) endfunction() -# Sets QT_WILL_BUILD_TOOLS if tools will be built. +# Sets QT_WILL_BUILD_TOOLS if tools will be built and QT_WILL_RENAME_TOOL_TARGETS +# if those tools have replaced naming. function(qt_check_if_tools_will_be_built) - if(QT_FORCE_FIND_TOOLS OR (CMAKE_CROSSCOMPILING AND NOT QT_BUILD_TOOLS_WHEN_CROSSCOMPILING)) + # By default, we build our own tools unless we're cross-building or QT_HOST_PATH is set. + set(need_target_rename FALSE) + set(require_find_tools FALSE) + if(CMAKE_CROSSCOMPILING) set(will_build_tools FALSE) + if(QT_FORCE_BUILD_TOOLS) + set(will_build_tools TRUE) + set(need_target_rename TRUE) + endif() + set(require_find_tools TRUE) else() - set(will_build_tools TRUE) + if(QT_HOST_PATH) + set(will_build_tools FALSE) + else() + set(will_build_tools TRUE) + endif() + if(QT_FORCE_FIND_TOOLS) + set(will_build_tools FALSE) + set(require_find_tools TRUE) + endif() + if(QT_FORCE_BUILD_TOOLS) + set(will_build_tools TRUE) + set(need_target_rename TRUE) + endif() endif() + + set_property(GLOBAL PROPERTY qt_require_find_tools "${require_find_tools}") + set(QT_WILL_BUILD_TOOLS ${will_build_tools} CACHE INTERNAL "Are tools going to be built" FORCE) + set(QT_WILL_RENAME_TOOL_TARGETS ${need_target_rename} CACHE INTERNAL + "Do tool targets need to be renamed" FORCE) endfunction() # Use this macro to exit a file or function scope unless we're building tools. This is supposed to @@ -505,3 +551,219 @@ function(qt_exclude_tool_directories_from_default_target) set(__qt_exclude_tool_directories "${absolute_path_directories}" PARENT_SCOPE) endif() endfunction() + +function(qt_internal_find_tool out_var target_name tools_target) + qt_tool_target_to_name(name ${target_name}) + + # Handle case when a tool does not belong to a module and it can't be built either (like + # during a cross-compile). + if(NOT tools_target AND NOT QT_WILL_BUILD_TOOLS) + message(FATAL_ERROR "The tool \"${name}\" has not been assigned to a module via" + " TOOLS_TARGET (so it can't be found) and it can't be built" + " (QT_WILL_BUILD_TOOLS is ${QT_WILL_BUILD_TOOLS}).") + endif() + + if(NOT CMAKE_CROSSCOMPILING) + if(QT_INTERNAL_FORCE_FIND_HOST_TOOLS_MODULE_LIST AND + NOT "${tools_target}" IN_LIST QT_INTERNAL_FORCE_FIND_HOST_TOOLS_MODULE_LIST) + message(STATUS "Tool '${full_name}' will be built from source.") + set(${out_var} "TRUE" PARENT_SCOPE) + return() + endif() + endif() + + if(QT_WILL_RENAME_TOOL_TARGETS AND (name STREQUAL target_name)) + message(FATAL_ERROR + "qt_internal_add_tool must be passed a target obtained from qt_get_tool_target_name.") + endif() + + set(full_name "${QT_CMAKE_EXPORT_NAMESPACE}::${name}") + set(imported_tool_target_already_found FALSE) + + # This condition can only be TRUE if a previous find_package(Qt6${tools_target}Tools) + # was already done. That can happen if QT_FORCE_FIND_TOOLS was ON or we're cross-compiling. + # In such a case, we need to exit early if we're not going to also build the tools. + if(TARGET ${full_name}) + get_property(path TARGET ${full_name} PROPERTY LOCATION) + message(STATUS "Tool '${full_name}' was found at ${path}.") + set(imported_tool_target_already_found TRUE) + if(NOT QT_WILL_BUILD_TOOLS) + set(${out_var} "FALSE" PARENT_SCOPE) + return() + endif() + endif() + + # We need to search for the host Tools package when doing a cross-build + # or when QT_FORCE_FIND_TOOLS is ON. + # As an optimiziation, we don't search for the package one more time if the target + # was already brought into scope from a previous find_package. + set(search_for_host_package FALSE) + if(NOT QT_WILL_BUILD_TOOLS OR QT_WILL_RENAME_TOOL_TARGETS) + set(search_for_host_package TRUE) + endif() + if(search_for_host_package AND NOT imported_tool_target_already_found) + set(tools_package_name "${INSTALL_CMAKE_NAMESPACE}${tools_target}Tools") + message(STATUS "Searching for tool '${full_name}' in package ${tools_package_name}.") + + # Create the tool targets, even if QT_NO_CREATE_TARGETS is set. + # Otherwise targets like Qt6::moc are not available in a top-level cross-build. + set(BACKUP_QT_NO_CREATE_TARGETS ${QT_NO_CREATE_TARGETS}) + set(QT_NO_CREATE_TARGETS OFF) + + # When cross-compiling, we want to search for Tools packages in QT_HOST_PATH. + # To do that, we override CMAKE_PREFIX_PATH and CMAKE_FIND_ROOT_PATH. + # + # We don't use find_package + PATHS option because any recursive find_dependency call + # inside a Tools package would not inherit the initial PATHS value given. + # TODO: Potentially we could set a global __qt_cmake_host_dir var like we currently + # do with _qt_cmake_dir in Qt6Config and change all our host tool find_package calls + # everywhere to specify that var in PATHS. + # + # Note though that due to path rerooting issue in + # https://gitlab.kitware.com/cmake/cmake/-/issues/21937 + # we have to append a lib/cmake suffix to CMAKE_PREFIX_PATH so the value does not get + # rerooted on top of CMAKE_FIND_ROOT_PATH. + # Use QT_HOST_PATH_CMAKE_DIR for the suffix when available (it would be set by + # the qt.toolchain.cmake file when building other repos or given by the user when + # configuring qtbase) or derive it from from the Qt6HostInfo package which is + # found in QtSetup. + set(${tools_package_name}_BACKUP_CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH}) + set(${tools_package_name}_BACKUP_CMAKE_FIND_ROOT_PATH "${CMAKE_FIND_ROOT_PATH}") + if(QT_HOST_PATH_CMAKE_DIR) + set(qt_host_path_cmake_dir_absolute "${QT_HOST_PATH_CMAKE_DIR}") + elseif(Qt${PROJECT_VERSION_MAJOR}HostInfo_DIR) + get_filename_component(qt_host_path_cmake_dir_absolute + "${Qt${PROJECT_VERSION_MAJOR}HostInfo_DIR}/.." ABSOLUTE) + else() + # This should never happen, serves as an assert. + message(FATAL_ERROR + "Neither QT_HOST_PATH_CMAKE_DIR nor " + "Qt${PROJECT_VERSION_MAJOR}HostInfo_DIR available.") + endif() + set(CMAKE_PREFIX_PATH "${qt_host_path_cmake_dir_absolute}") + + # Look for tools in additional host Qt installations. This is done for conan support where + # we have separate installation prefixes per package. For simplicity, we assume here that + # all host Qt installations use the same value of INSTALL_LIBDIR. + if(DEFINED QT_ADDITIONAL_HOST_PACKAGES_PREFIX_PATH) + file(RELATIVE_PATH rel_host_cmake_dir "${QT_HOST_PATH}" + "${qt_host_path_cmake_dir_absolute}") + foreach(host_path IN LISTS QT_ADDITIONAL_HOST_PACKAGES_PREFIX_PATH) + set(host_cmake_dir "${host_path}/${rel_host_cmake_dir}") + list(PREPEND CMAKE_PREFIX_PATH "${host_cmake_dir}") + endforeach() + + list(PREPEND CMAKE_FIND_ROOT_PATH "${QT_ADDITIONAL_HOST_PACKAGES_PREFIX_PATH}") + endif() + list(PREPEND CMAKE_FIND_ROOT_PATH "${QT_HOST_PATH}") + + find_package( + ${tools_package_name} + ${PROJECT_VERSION} + NO_PACKAGE_ROOT_PATH + NO_CMAKE_ENVIRONMENT_PATH + NO_SYSTEM_ENVIRONMENT_PATH + NO_CMAKE_PACKAGE_REGISTRY + NO_CMAKE_SYSTEM_PATH + NO_CMAKE_SYSTEM_PACKAGE_REGISTRY) + + # Restore backups. + set(CMAKE_FIND_ROOT_PATH "${${tools_package_name}_BACKUP_CMAKE_FIND_ROOT_PATH}") + set(CMAKE_PREFIX_PATH "${${tools_package_name}_BACKUP_CMAKE_PREFIX_PATH}") + set(QT_NO_CREATE_TARGETS ${BACKUP_QT_NO_CREATE_TARGETS}) + + if(${${tools_package_name}_FOUND} AND TARGET ${full_name}) + # Even if the tool is already visible, make sure that our modules remain associated + # with the tools. + qt_internal_append_known_modules_with_tools("${tools_target}") + get_property(path TARGET ${full_name} PROPERTY LOCATION) + message(STATUS "${full_name} was found at ${path} using package ${tools_package_name}.") + if (NOT QT_FORCE_BUILD_TOOLS) + set(${out_var} "FALSE" PARENT_SCOPE) + return() + endif() + endif() + endif() + + get_property(require_find_tools GLOBAL PROPERTY qt_require_find_tools) + if(require_find_tools AND NOT TARGET ${full_name}) + if(${${tools_package_name}_FOUND}) + set(pkg_found_msg "") + string(APPEND pkg_found_msg + "the ${tools_package_name} package, but the package did not contain the tool. " + "Make sure that the host module ${tools_target} was built with all features " + "enabled (no explicitly disabled tools).") + else() + set(pkg_found_msg "") + string(APPEND pkg_found_msg + "the ${tools_package_name} package, but the package could not be found. " + "Make sure you have built and installed the host ${tools_target} module, " + "which will ensure the creation of the ${tools_package_name} package.") + endif() + message(FATAL_ERROR + "Failed to find the host tool \"${full_name}\". It is part of " + ${pkg_found_msg}) + endif() + + if(QT_WILL_BUILD_TOOLS) + message(STATUS "Tool '${full_name}' will be built from source.") + endif() + set(${out_var} "TRUE" PARENT_SCOPE) +endfunction() + +# This function adds an internal tool that should be compiled at configure time. +# TOOLS_TARGET +# Specifies the module this tool belongs to. The Qt6${TOOLS_TARGET}Tools module +# will then expose targets for this tool. Ignored if NO_INSTALL is set. +function(qt_internal_add_configure_time_tool target_name) + set(one_value_args INSTALL_DIRECTORY TOOLS_TARGET CONFIG) + set(multi_value_args) + set(option_args NO_INSTALL) + cmake_parse_arguments(PARSE_ARGV 1 arg + "${option_args}" "${one_value_args}" "${multi_value_args}") + + qt_internal_find_tool(will_build_tools ${target_name} "${arg_TOOLS_TARGET}") + if(NOT will_build_tools) + return() + endif() + + qt_tool_target_to_name(name ${target_name}) + set(extra_args "") + if(arg_NO_INSTALL OR NOT arg_TOOLS_TARGET) + list(APPEND extra_args "NO_INSTALL") + else() + set(install_dir "${INSTALL_BINDIR}") + if(arg_INSTALL_DIRECTORY) + set(install_dir "${arg_INSTALL_DIRECTORY}") + endif() + set(extra_args "INSTALL_DIRECTORY" "${install_dir}") + endif() + + if(arg_CONFIG) + set(tool_config "${arg_CONFIG}") + elseif(QT_MULTI_CONFIG_FIRST_CONFIG) + set(tool_config "${arg_QT_MULTI_CONFIG_FIRST_CONFIG}") + else() + set(tool_config "${CMAKE_BUILD_TYPE}") + endif() + + string(REPLACE "\\\;" "\\\\\\\;" unparsed_arguments "${arg_UNPARSED_ARGUMENTS}") + qt_internal_add_configure_time_executable(${target_name} + OUTPUT_NAME ${name} + CONFIG ${tool_config} + ${extra_args} + ${unparsed_arguments} + ) + + if(TARGET host_tools) + add_dependencies(host_tools "${target_name}_build") + endif() + + if(NOT arg_NO_INSTALL AND arg_TOOLS_TARGET) + qt_internal_add_targets_to_additional_targets_export_file( + TARGETS ${target_name} + TARGET_EXPORT_NAMES ${QT_CMAKE_EXPORT_NAMESPACE}::${name} + EXPORT_NAME_PREFIX ${INSTALL_CMAKE_NAMESPACE}${arg_TOOLS_TARGET}Tools + ) + endif() +endfunction() |