qt5base-lts/cmake/QtDocsHelpers.cmake

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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
# This function adds a dependency between a doc-generating target like 'generate_docs_Gui'
# and the necessary tool target like 'qdoc'.
#
# If the target is not yet existing, save the dependency connection in a global property.
# The dependency is then added near the end of the top-level build after all subdirectories have
# been handled.
function(qt_internal_add_doc_tool_dependency doc_target tool_name)
qt_get_tool_target_name(tool_target ${tool_name})
if(TARGET ${tool_target})
add_dependencies(${doc_target} ${tool_target})
else()
qt_internal_defer_dependency(${doc_target} ${tool_target})
endif()
endfunction()
function(qt_internal_add_docs)
if(${ARGC} EQUAL 1)
# Function called from old generated CMakeLists.txt that was missing the target parameter
return()
endif()
if(NOT ${ARGC} EQUAL 2)
message(FATAL_ERROR "qt_add_docs called with the wrong number of arguments. Should be qt_add_docs(target path_to_project.qdocconf).")
return()
endif()
set(target ${ARGV0})
set(doc_project ${ARGV1})
# If a target is not built (which can happen for tools when crosscompiling), we shouldn't try
# to generate docs.
if(NOT TARGET "${target}")
return()
endif()
set(tool_dependencies_enabled TRUE)
if(NOT "${QT_HOST_PATH}" STREQUAL "")
set(tool_dependencies_enabled FALSE)
set(doc_tools_bin "${QT_HOST_PATH}/${QT${PROJECT_VERSION_MAJOR}_HOST_INFO_BINDIR}")
set(doc_tools_libexec "${QT_HOST_PATH}/${QT${PROJECT_VERSION_MAJOR}_HOST_INFO_LIBEXECDIR}")
elseif(QT_SUPERBUILD)
set(doc_tools_bin "${QtBase_BINARY_DIR}/${INSTALL_BINDIR}")
set(doc_tools_libexec "${QtBase_BINARY_DIR}/${INSTALL_LIBEXECDIR}")
else()
set(doc_tools_bin "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_BINDIR}")
set(doc_tools_libexec "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_LIBEXECDIR}")
endif()
set(qdoc_bin "${doc_tools_bin}/qdoc${CMAKE_EXECUTABLE_SUFFIX}")
set(qtattributionsscanner_bin "${doc_tools_libexec}/qtattributionsscanner${CMAKE_EXECUTABLE_SUFFIX}")
set(qhelpgenerator_bin "${doc_tools_libexec}/qhelpgenerator${CMAKE_EXECUTABLE_SUFFIX}")
get_target_property(target_type ${target} TYPE)
if (NOT target_type STREQUAL "INTERFACE_LIBRARY")
get_target_property(target_bin_dir ${target} BINARY_DIR)
get_target_property(target_source_dir ${target} SOURCE_DIR)
else()
set(target_bin_dir ${CMAKE_CURRENT_BINARY_DIR})
set(target_source_dir ${CMAKE_CURRENT_SOURCE_DIR})
endif()
set(doc_output_dir "${target_bin_dir}/.doc")
# Generate include dir list
set(target_include_dirs_file "${doc_output_dir}/$<CONFIG>/includes.txt")
set(prop_prefix "")
if(target_type STREQUAL "INTERFACE_LIBRARY")
set(prop_prefix "INTERFACE_")
endif()
set(include_path_prop "${prop_prefix}INCLUDE_DIRECTORIES")
set(include_paths_property "$<TARGET_PROPERTY:${target},${include_path_prop}>")
if (NOT target_type STREQUAL "UTILITY")
file(GENERATE
OUTPUT ${target_include_dirs_file}
CONTENT "$<$<BOOL:${include_paths_property}>:-I$<JOIN:${include_paths_property},\n-I>>"
)
set(include_path_args "@${target_include_dirs_file}")
else()
set(include_path_args "")
endif()
get_filename_component(doc_target "${doc_project}" NAME_WLE)
if (QT_WILL_INSTALL)
set(qdoc_output_dir "${CMAKE_BINARY_DIR}/${INSTALL_DOCDIR}/${doc_target}")
set(qdoc_qch_output_dir "${CMAKE_BINARY_DIR}/${INSTALL_DOCDIR}")
set(index_dir "${CMAKE_BINARY_DIR}/${INSTALL_DOCDIR}")
else()
set(qdoc_output_dir "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_DOCDIR}/${doc_target}")
set(qdoc_qch_output_dir "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_DOCDIR}")
set(index_dir "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_DOCDIR}")
endif()
# qtattributionsscanner
add_custom_target(qattributionsscanner_${target}
COMMAND ${qtattributionsscanner_bin}
${PROJECT_SOURCE_DIR}
--basedir "${PROJECT_SOURCE_DIR}/.."
--filter "QDocModule=${doc_target}"
-o "${target_bin_dir}/codeattributions.qdoc"
)
# prepare docs target
set(prepare_qdoc_args
-outputdir "${qdoc_output_dir}"
"${target_source_dir}/${doc_project}"
-prepare
-indexdir "${index_dir}"
-no-link-errors
"${include_path_args}"
)
if(NOT QT_BUILD_ONLINE_DOCS)
list(PREPEND prepare_qdoc_args
-installdir "${QT_INSTALL_DIR}/${INSTALL_DOCDIR}"
)
endif()
if(QT_SUPERBUILD)
set(qt_install_docs_env "${QtBase_BINARY_DIR}/${INSTALL_DOCDIR}")
elseif(QT_WILL_INSTALL)
set(qt_install_docs_env "${CMAKE_INSTALL_PREFIX}/${INSTALL_DOCDIR}")
else()
set(qt_install_docs_env "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_DOCDIR}")
endif()
set(qdoc_env_args
"QT_INSTALL_DOCS=\"${qt_install_docs_env}\""
"QT_VERSION=${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}"
"QT_VER=${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}"
"QT_VERSION_TAG=${PROJECT_VERSION_MAJOR}${PROJECT_VERSION_MINOR}${PROJECT_VERSION_PATCH}"
"BUILDDIR=${target_bin_dir}"
)
add_custom_target(prepare_docs_${target}
COMMAND ${CMAKE_COMMAND} -E env ${qdoc_env_args}
${qdoc_bin}
${prepare_qdoc_args}
)
add_dependencies(prepare_docs_${target} qattributionsscanner_${target})
Replace the syncqt.pl script with syncqt tool syncqt.pl adds an extra dependency on perl when building Qt. Modern C++ provides the convenient cross-platform way to access a filesystem and to use regular expressions, so we may replace the perl script with C++ application. The syncqt executable is built at configure time and installed as QtCore tool. It's running at configure time to deliver the required header files for IDE to build a consistent code model and at the build time to keep tracking changes in header files and generate the missing aliases without reconfiguring. 'syncqt' only parses header files from a CMake build tree, so the resulting Qt installation only contains interfacing headers that belong to the platform that Qt is built for. 'sync.profile' files are not used as the 'source of truth' for sync qt procedure anymore, all the necessary information is taken from either CMake files at configure time or from the module header files while parsing them. syncqt.pl is still in place since it's required as fallback solution for a smooth transition to the new syncqt implementation for all qt repositories. This patchset only enables the C++ based syncqt for 'qtbase' repository. From the performance perspective C++ version works faster then perl script, also the configure time is reduced significally on subsequent reconfigurations - up x2 times faster when re-configuring repository, but it also takes time to compile the tool itself the first time. Numbers for qtbase: syncqt.pl syncqt.cpp initial: 0m16,035s 0m20,413s reconfig: 0m6,819s 0m3,725s The syncing procedure can be run separately for each module using <ModuleName>_sync_headers targets. The 'sync_headers' target can be used to sync all the modules at once. Task-number: QTBUG-87480 Task-number: QTBUG-103196 Change-Id: I8c938bcaf88a8713b39bbfd66d9e7ef12b2c3523 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2022-08-15 16:29:41 +00:00
if(QT_USE_SYNCQT_CPP)
if(NOT TARGET sync_all_public_headers)
add_custom_target(sync_all_public_headers)
endif()
add_dependencies(prepare_docs_${target} sync_all_public_headers)
endif()
# generate docs target
set(generate_qdoc_args
-outputdir "${qdoc_output_dir}"
"${target_source_dir}/${doc_project}"
-generate
-indexdir "${index_dir}"
"${include_path_args}"
)
if(NOT QT_BUILD_ONLINE_DOCS)
list(PREPEND generate_qdoc_args
-installdir "${QT_INSTALL_DIR}/${INSTALL_DOCDIR}"
)
endif()
foreach(target_prefix generate_top_level_docs generate_repo_docs generate_docs)
set(depends_arg "")
if(tool_dependencies_enabled)
set(depends_arg DEPENDS ${qdoc_bin})
endif()
add_custom_target(${target_prefix}_${target}
${depends_arg}
COMMAND ${CMAKE_COMMAND} -E env ${qdoc_env_args} ${qdoc_bin} ${generate_qdoc_args})
endforeach()
add_dependencies(generate_docs_${target} prepare_docs_${target})
add_dependencies(generate_repo_docs_${target} ${qt_docs_prepare_target_name})
add_dependencies(generate_top_level_docs_${target} prepare_docs)
add_dependencies(generate_docs generate_top_level_docs_${target})
# html docs target
add_custom_target(html_docs_${target})
add_dependencies(html_docs_${target} generate_docs_${target})
# generate .qch
set(qch_file_name ${doc_target}.qch)
set(qch_file_path ${qdoc_qch_output_dir}/${qch_file_name})
foreach(target_prefix qch_top_level_docs qch_repo_docs qch_docs)
set(depends_arg "")
if(tool_dependencies_enabled)
set(depends_arg DEPENDS ${qhelpgenerator_bin})
endif()
add_custom_target(${target_prefix}_${target}
${depends_arg}
COMMAND ${qhelpgenerator_bin}
"${qdoc_output_dir}/${doc_target}.qhp"
-o "${qch_file_path}"
)
endforeach()
add_dependencies(qch_docs_${target} generate_docs_${target})
add_dependencies(qch_repo_docs_${target} ${qt_docs_generate_target_name})
add_dependencies(qch_top_level_docs_${target} generate_docs)
add_dependencies(qch_docs qch_top_level_docs_${target})
if (QT_WILL_INSTALL)
install(DIRECTORY "${qdoc_output_dir}/"
DESTINATION "${INSTALL_DOCDIR}/${doc_target}"
COMPONENT _install_html_docs_${target}
EXCLUDE_FROM_ALL
)
add_custom_target(install_html_docs_${target}
COMMAND ${CMAKE_COMMAND}
--install "${CMAKE_BINARY_DIR}"
--component _install_html_docs_${target}
COMMENT "Installing html docs for target ${target}"
)
install(FILES "${qch_file_path}"
DESTINATION "${INSTALL_DOCDIR}"
COMPONENT _install_qch_docs_${target}
EXCLUDE_FROM_ALL
)
add_custom_target(install_qch_docs_${target}
COMMAND ${CMAKE_COMMAND}
--install "${CMAKE_BINARY_DIR}"
--component _install_qch_docs_${target}
COMMENT "Installing qch docs for target ${target}"
)
else()
# Don't need to do anything when not installing
add_custom_target(install_html_docs_${target})
add_custom_target(install_qch_docs_${target})
endif()
add_custom_target(install_docs_${target})
add_dependencies(install_docs_${target} install_html_docs_${target} install_qch_docs_${target})
add_custom_target(docs_${target})
add_dependencies(docs_${target} html_docs_${target})
add_dependencies(docs_${target} qch_docs_${target})
add_dependencies(${qt_docs_prepare_target_name} prepare_docs_${target})
add_dependencies(${qt_docs_generate_target_name} generate_repo_docs_${target})
add_dependencies(${qt_docs_qch_target_name} qch_repo_docs_${target})
add_dependencies(${qt_docs_install_html_target_name} install_html_docs_${target})
add_dependencies(${qt_docs_install_qch_target_name} install_qch_docs_${target})
# Make sure that the necessary tools are built when running,
# for example 'cmake --build . --target generate_docs'.
if(tool_dependencies_enabled)
qt_internal_add_doc_tool_dependency(qattributionsscanner_${target} qtattributionsscanner)
qt_internal_add_doc_tool_dependency(prepare_docs_${target} qdoc)
qt_internal_add_doc_tool_dependency(qch_docs_${target} qhelpgenerator)
endif()
endfunction()