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Diffstat (limited to 'cmake/QtPkgConfigHelpers.cmake')
-rw-r--r-- | cmake/QtPkgConfigHelpers.cmake | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/cmake/QtPkgConfigHelpers.cmake b/cmake/QtPkgConfigHelpers.cmake new file mode 100644 index 0000000000..dbe736c438 --- /dev/null +++ b/cmake/QtPkgConfigHelpers.cmake @@ -0,0 +1,164 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: BSD-3-Clause + +function(qt_internal_collect_direct_target_dependencies target targets_out_var) + __qt_internal_walk_libs("${target}" "${targets_out_var}" _rcc_objects + "qt_direct_targets_dict" "direct_targets") + set("${targets_out_var}" "${${targets_out_var}}" PARENT_SCOPE) +endfunction() + +macro(qt_internal_set_pkg_config_cpp_flags var options flag) + set(tmpopts "${options}") + list(FILTER tmpopts EXCLUDE REGEX "\\$<BUILD_INTERFACE:[^,>]+>") + list(FILTER tmpopts EXCLUDE REGEX "\\$<TARGET_PROPERTY:[^,>]+>") + list(TRANSFORM tmpopts REPLACE "\\$<\\$<LINK_LANGUAGE:[^,>]+>:([^,>]+)>" "\\1") + list(TRANSFORM tmpopts REPLACE "\\$<INSTALL_INTERFACE:([^,>]+)>" "\\1") + list(TRANSFORM tmpopts REPLACE ">" "$<ANGLE-R>") + list(TRANSFORM tmpopts REPLACE "," "$<COMMA>") + set(${var} "$<$<BOOL:${tmpopts}>:${flag}$<JOIN:$<REMOVE_DUPLICATES:${tmpopts}>, ${flag}>>") + unset(tmpopts) +endmacro() + +# Create a Qt6*.pc file intended for pkg-config consumption. +function(qt_internal_generate_pkg_config_file module) + # TODO: PkgConfig is supported under MSVC with pkgconf (github.com/pkgconf/pkgconf) + if((NOT UNIX OR QT_FEATURE_framework) + AND NOT MINGW OR CMAKE_VERSION VERSION_LESS "3.20" OR ANDROID) + return() + endif() + if(NOT BUILD_SHARED_LIBS) + return() + endif() + + set(pkgconfig_file "${QT_CMAKE_EXPORT_NAMESPACE}${module}") + set(pkgconfig_name "${QT_CMAKE_EXPORT_NAMESPACE} ${module}") + set(pkgconfig_description "Qt ${module} module") + set(target "${QT_CMAKE_EXPORT_NAMESPACE}::${module}") + set(is_interface_library "$<STREQUAL:$<TARGET_PROPERTY:${target},TYPE>,INTERFACE_LIBRARY>") + # The flags macro expanded this variables so it's better to set them at + # their corresponding PkgConfig string. + set(includedir "\${includedir}") + set(mkspecsdir "\${mkspecsdir}") + + get_target_property(is_internal_module ${target} _qt_is_internal_module) + if(is_internal_module) + return() + endif() + + get_target_property(loose_link_options ${target} INTERFACE_LINK_OPTIONS) + get_target_property(loose_compile_defs ${target} INTERFACE_COMPILE_DEFINITIONS) + get_target_property(loose_include_dirs ${target} INTERFACE_INCLUDE_DIRECTORIES) + list(TRANSFORM loose_include_dirs REPLACE "${INSTALL_INCLUDEDIR}" "\${includedir}") + list(TRANSFORM loose_include_dirs REPLACE "${INSTALL_MKSPECSDIR}" "\${mkspecsdir}") + + # Remove genex wrapping around gc_sections flag because we can't evaluate genexes like + # $<CXX_COMPILER_ID> in file(GENERATE). And given that .pc files don't support dynamic + # evaluation like the $<CXX_COMPILER_ID> genex, distros will be expected to patch the .pc + # files according to which compiler they intend to be used with. + get_property(gc_sections_with_genex GLOBAL PROPERTY _qt_internal_gc_sections_with_genex) + get_property(gc_sections_without_genex GLOBAL PROPERTY _qt_internal_gc_sections_without_genex) + if(loose_link_options AND gc_sections_with_genex AND gc_sections_without_genex) + string(REPLACE "${gc_sections_with_genex}" "${gc_sections_without_genex}" + loose_link_options "${loose_link_options}") + endif() + + qt_internal_set_pkg_config_cpp_flags(link_options "${loose_link_options}" "") + qt_internal_set_pkg_config_cpp_flags(compile_defs "${loose_compile_defs}" -D) + qt_internal_set_pkg_config_cpp_flags(include_dirs "${loose_include_dirs}" -I) + if("${include_dirs}" MATCHES "\\${mkspecsdir}") + set(contains_mkspecs TRUE) + endif() + + # TODO: Handle macOS framework builds + qt_internal_collect_direct_target_dependencies(${target} loose_target_requires) + foreach(dep IN LISTS loose_target_requires) + if(dep MATCHES "^Qt::") + string(REGEX REPLACE "Qt" "${QT_CMAKE_EXPORT_NAMESPACE}" dep ${dep}) + else() + # TODO: Figure out a way to get non-Qt requirements PkgConfig files. + continue() + endif() + if(NOT TARGET ${dep}) + continue() + endif() + get_target_property(is_internal_module ${dep} _qt_is_internal_module) + if(is_internal_module OR dep MATCHES ".*Platform.*Internal") + continue() + endif() + get_target_property(type ${dep} TYPE) + if(type STREQUAL "INTERFACE_LIBRARY") + if(dep MATCHES "(.*)Private") + set(dep "${CMAKE_MATCH_1}") + endif() + get_target_property(type ${dep} TYPE) + endif() + string(REGEX REPLACE "::" "" req ${dep}) + if(type STREQUAL "STATIC_LIBRARY") + list(APPEND target_libs -l${req}) + else() + list(APPEND target_requires ${req}) + endif() + endforeach() + string(APPEND link_options " $<JOIN:$<REMOVE_DUPLICATES:${target_libs}>, >") + + qt_path_join(path_suffix "${INSTALL_LIBDIR}" pkgconfig) + qt_path_join(build_dir "${QT_BUILD_DIR}" "${path_suffix}") + qt_path_join(install_dir "${QT_INSTALL_DIR}" "${path_suffix}") + + set(step_prefix "preliminary_pc_for_${pkgconfig_file}") + qt_path_join(template_pc "${QT_CMAKE_DIR}" PkgConfigLibrary.pc.in) + qt_path_join(pc_step1_path "${build_dir}" ${step_prefix}_step1.pc) + qt_path_join(pc_step2_path "${build_dir}" ${step_prefix}_$<CONFIG>_step2.pc) + + configure_file("${template_pc}" "${pc_step1_path}" @ONLY) + + file(GENERATE OUTPUT "${pc_step2_path}" INPUT "${pc_step1_path}") + + if(QT_GENERATOR_IS_MULTI_CONFIG) + set(configs ${CMAKE_CONFIGURATION_TYPES}) + set(rels ${configs}) + list(FILTER rels INCLUDE REGEX "(Release|RelWithDebInfo|MinSizeRel)") + if(rels) + list(GET rels 0 release) + endif() + else() + set(configs ${CMAKE_BUILD_TYPE}) + set(release ${configs}) + endif() + + foreach(config ${configs}) + if(config STREQUAL "Debug" AND CMAKE_DEBUG_POSTFIX) + set(postfix ${CMAKE_DEBUG_POSTFIX}) + elseif(NOT config STREQUAL release) + string(TOLOWER "_${config}" postfix) + else() + set(postfix "") + endif() + + set(extra_args "") + if(NOT postfix STREQUAL "") + list(APPEND extra_args "-DPOSTFIX=${postfix}") + endif() + + qt_path_join(pc_step2_path "${build_dir}" ${step_prefix}_${config}_step2.pc) + qt_path_join(final_pc_path "${build_dir}" ${pkgconfig_file}${postfix}.pc) + + add_custom_command( + OUTPUT "${final_pc_path}" + DEPENDS "${pc_step2_path}" + "${QT_CMAKE_DIR}/QtFinishPkgConfigFile.cmake" + COMMAND ${CMAKE_COMMAND} + "-DIN_FILE=${pc_step2_path}" + "-DOUT_FILE=${final_pc_path}" + ${extra_args} + -P "${QT_CMAKE_DIR}/QtFinishPkgConfigFile.cmake" + VERBATIM + COMMENT "Generating pc file for target ${target}" + ) + + # This is inspired by https://gitlab.kitware.com/cmake/cmake/-/issues/20842 + target_sources(${module} PRIVATE "${final_pc_path}") + + qt_install(FILES "${final_pc_path}" DESTINATION "${install_dir}") + endforeach() +endfunction() |