diff options
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/QtTopLevelHelpers.cmake | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/cmake/QtTopLevelHelpers.cmake b/cmake/QtTopLevelHelpers.cmake new file mode 100644 index 00000000..b9f4341a --- /dev/null +++ b/cmake/QtTopLevelHelpers.cmake @@ -0,0 +1,85 @@ +# Populates $out_module_list with all subdirectories that have a CMakeLists.txt file +function(qt_internal_find_modules out_module_list) + set(module_list "") + file(GLOB directories LIST_DIRECTORIES true RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" *) + foreach(directory IN LISTS directories) + if(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/${directory}" + AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${directory}/CMakeLists.txt") + list(APPEND module_list "${directory}") + endif() + endforeach() + message(DEBUG "qt_internal_find_modules: ${module_list}") + set(${out_module_list} "${module_list}" PARENT_SCOPE) +endfunction() + +# poor man's yaml parser, populating $out_dependencies with all dependencies +# in the $depends_file +function(qt_internal_parse_dependencies depends_file out_dependencies) + file(STRINGS "${depends_file}" lines) + set(dependencies "") + foreach(line IN LISTS lines) + if(line STREQUAL "dependencies:") + set(found_dependencies 1) + elseif(found_dependencies AND line MATCHES "^ (.*):$") + set(dependency ${CMAKE_MATCH_1}) + # dependencies are specified with relative path to this module + string(REPLACE "../" "" dependency ${dependency}) + list(APPEND dependencies ${dependency}) + endif() + endforeach() + message(DEBUG "qt_internal_parse_dependencies for ${depends_file}: ${module_list}") + set(${out_dependencies} "${dependencies}" PARENT_SCOPE) +endfunction() + +# Load $module and populate $out_ordered with the submodules based on their dependencies +# $ordered carries already sorted dependencies; $out_has_dependencies is left empty +# if there are no dependencies, otherwise set to 1 +# Function calls itself recursively if a dependency is found that is not yet in $ordered. +function(qt_internal_add_module_dependencies module ordered out_ordered out_has_dependencies) + set(depends_file "${CMAKE_CURRENT_SOURCE_DIR}/${module}/dependencies.yaml") + if(NOT EXISTS "${depends_file}") + set(${out_has_dependencies} "" PARENT_SCOPE) + return() + endif() + set(${out_has_dependencies} "1" PARENT_SCOPE) + set(dependencies "") + qt_internal_parse_dependencies(${depends_file} dependencies) + # module hasn't been seen yet, append it + list(FIND ordered "${module}" pindex) + if (pindex EQUAL -1) + list(LENGTH ordered pindex) + list(APPEND ordered ${module}) + endif() + foreach(dependency IN LISTS dependencies) + list(FIND ordered "${dependency}" dindex) + if (dindex EQUAL -1) + # dependency hasnt' been seen yet - load it + list(INSERT ordered ${pindex} "${dependency}") + qt_internal_add_module_dependencies(${dependency} "${ordered}" ordered has_dependency) + elseif(dindex GREATER pindex) + # otherwise, make sure it is before module + list(REMOVE_AT ordered ${dindex}) + list(INSERT ordered ${pindex} "${dependency}") + endif() + endforeach() + set(${out_ordered} "${ordered}" PARENT_SCOPE) +endfunction() + +# populates $out_all_ordered with the sequence of the modules that need +# to be built in order to build $modules +function(qt_internal_sort_module_dependencies modules out_all_ordered) + set(ordered "") + foreach(module IN LISTS modules) + set(out_ordered "") + qt_internal_add_module_dependencies(${module} "${ordered}" out_ordered module_depends) + if(NOT module_depends) + list(APPEND no_dependencies "${module}") + endif() + set(ordered "${out_ordered}") + endforeach() + if (no_dependencies) + list(APPEND ordered "${no_dependencies}") + endif() + message(DEBUG "qt_internal_parse_dependencies sorted ${modules}: ${ordered}") + set(${out_all_ordered} "${ordered}" PARENT_SCOPE) +endfunction() |