qt5base-lts/cmake/QtDocsHelpers.cmake

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# 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()
if(QT_SUPERBUILD)
set(doc_tools_dir "${QtBase_BINARY_DIR}/${INSTALL_BINDIR}")
else()
set(doc_tools_dir "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_BINDIR}")
endif()
set(qdoc_bin "${doc_tools_dir}/qdoc${CMAKE_EXECUTABLE_SUFFIX}")
set(qtattributionsscanner_bin "${doc_tools_dir}/qtattributionsscanner${CMAKE_EXECUTABLE_SUFFIX}")
set(qhelpgenerator_bin "${doc_tools_dir}/qhelpgenerator${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(include_paths_property "$<TARGET_PROPERTY:${target},INCLUDE_DIRECTORIES>")
if (NOT target_type STREQUAL "INTERFACE_LIBRARY" AND NOT target_type STREQUAL "UTILITY")
file(GENERATE
OUTPUT ${target_include_dirs_file}
CONTENT "-I$<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(index_dir "${CMAKE_BINARY_DIR}/${INSTALL_DOCDIR}")
else()
set(qdoc_output_dir "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_DOCDIR}/${doc_target}")
set(index_dir "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_DOCDIR}")
endif()
# qtattributionsscanner
add_custom_target(qattributionsscanner_${target}
DEPENDS ${qattributionsscanner_bin}
COMMAND ${qtattributionsscanner_bin}
${PROJECT_SOURCE_DIR}
--filter "QDocModule=${doc_target}"
-o "${target_bin_dir}/codeattributions.qdoc"
)
# prepare docs target
set(prepare_qdoc_args
-outputdir "${qdoc_output_dir}"
-installdir "${QT_INSTALL_DIR}/${INSTALL_DOCDIR}"
"${target_source_dir}/${doc_project}"
-prepare
-indexdir "${index_dir}"
-no-link-errors
"${include_path_args}"
)
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}
DEPENDS ${qdoc_bin}
COMMAND ${CMAKE_COMMAND} -E env ${qdoc_env_args}
${qdoc_bin}
${prepare_qdoc_args}
)
add_dependencies(prepare_docs_${target} qattributionsscanner_${target})
# generate docs target
set(generate_qdocs_args
-outputdir "${qdoc_output_dir}"
-installdir "${INSTALL_DOCDIR}"
"${target_source_dir}/${doc_project}"
-generate
-indexdir "${index_dir}"
"${include_path_args}"
)
foreach(target_prefix generate_top_level_docs generate_repo_docs generate_docs)
add_custom_target(${target_prefix}_${target}
DEPENDS ${qdoc_bin}
COMMAND ${CMAKE_COMMAND} -E env ${qdoc_env_args} ${qdoc_bin} ${generate_qdocs_args})
endforeach()
add_dependencies(generate_docs_${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 ${qdoc_output_dir}/${qch_file_name})
foreach(target_prefix qch_top_level_docs qch_repo_docs qch_docs)
add_custom_target(${target_prefix}_${target}
DEPENDS ${qhelpgenerator_bin}
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 "${INSTALL_DOCDIR}/${qch_file_name}"
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'.
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)
endfunction()