qt5base-lts/cmake/QtPostProcess.cmake
Jean-Michaël Celerier 0900298d46 cmake: register plug-ins, create dependencies file
This commit introduces infrastructure work to allow static builds of Qt
to handle importing of plug-ins.

Change-Id: Ife0ca3ca7276ea8ec96fe0eb6adf934fad7620ec
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2019-06-04 10:08:07 +00:00

298 lines
11 KiB
CMake

function(qt_internal_write_depends_file target)
set(module Qt${target})
set(outfile "${QT_BUILD_DIR}/include/${module}/${module}Depends")
message("Generate ${outfile}...")
set(contents "/* This file was generated by cmake with the info from ${module} target. */\n")
string(APPEND contents "#ifdef __cplusplus /* create empty PCH in C mode */\n")
foreach (m ${ARGN})
string(APPEND contents "# include <Qt${m}/Qt${m}>\n")
endforeach()
string(APPEND contents "#endif\n")
file(GENERATE OUTPUT "${outfile}" CONTENT "${contents}")
endfunction()
macro(qt_collect_third_party_deps)
# If we are doing a non-static Qt build, we only want to propagate public dependencies.
# If we are doing a static Qt build, we need to propagate all dependencies.
set(depends_var "public_depends")
if(NOT QT_BUILD_SHARED_LIBS)
set(depends_var "depends")
endif()
foreach(dep ${${depends_var}})
# Gather third party packages that should be found when using the Qt module.
# Also handle nolink target dependencies.
string(REGEX REPLACE "_nolink$" "" base_dep "${dep}")
if(NOT base_dep STREQUAL dep)
# Resets target name like Vulkan_nolink to Vulkan, because we need to call
# find_package(Vulkan).
set(dep ${base_dep})
endif()
if(TARGET ${dep})
list(FIND third_party_deps_seen ${dep} dep_seen)
get_target_property(package_name ${dep} INTERFACE_QT_PACKAGE_NAME)
if(dep_seen EQUAL -1 AND package_name)
list(APPEND third_party_deps_seen ${dep})
get_target_property(package_version ${dep} INTERFACE_QT_PACKAGE_VERSION)
if(NOT package_version)
set(package_version "")
endif()
get_target_property(package_components ${dep} INTERFACE_QT_PACKAGE_COMPONENTS)
if(NOT package_components)
set(package_components "")
endif()
list(APPEND third_party_deps
"${package_name}\;${package_version}\;${package_components}")
endif()
endif()
endforeach()
endmacro()
function(qt_internal_create_module_depends_file target)
get_target_property(depends "${target}" LINK_LIBRARIES)
get_target_property(public_depends "${target}" INTERFACE_LINK_LIBRARIES)
get_target_property(target_deps "${target}" _qt_target_deps)
set(target_deps_seen "")
set(qtdeps "")
set(third_party_deps "")
set(third_party_deps_seen "")
set(tool_deps "")
set(tool_deps_seen "")
set(main_module_tool_deps "")
foreach (dep ${depends})
# Normalize module by stripping leading "Qt::" and trailing "Private"
if (dep MATCHES "Qt::(.*)")
set(dep "${CMAKE_MATCH_1}")
endif()
if (dep MATCHES "(.*)Private")
set(dep "${CMAKE_MATCH_1}")
endif()
list(FIND QT_KNOWN_MODULES "${dep}" _pos)
if (_pos GREATER -1)
list(APPEND qtdeps "${dep}")
# Make the ModuleTool package depend on dep's ModuleTool package.
list(FIND tool_deps_seen ${dep} dep_seen)
if(dep_seen EQUAL -1 AND ${dep} IN_LIST QT_KNOWN_MODULES_WITH_TOOLS)
list(APPEND tool_deps_seen ${dep})
list(APPEND tool_deps
"${INSTALL_CMAKE_NAMESPACE}${dep}Tools\;${PROJECT_VERSION}")
endif()
endif()
endforeach()
qt_collect_third_party_deps()
# Add dependency to the main ModuleTool package to ModuleDependencies file.
if(${target} IN_LIST QT_KNOWN_MODULES_WITH_TOOLS)
set(main_module_tool_deps
"${INSTALL_CMAKE_NAMESPACE}${target}Tools\;${PROJECT_VERSION}")
endif()
# Dirty hack because https://gitlab.kitware.com/cmake/cmake/issues/19200
foreach(dep ${target_deps})
if(dep)
list(FIND target_deps_seen "${dep}" dep_seen)
if(dep_seen EQUAL -1)
list(LENGTH dep len)
if(NOT (len EQUAL 2))
message(FATAL_ERROR "List '${dep}' should look like QtFoo;version")
endif()
list(GET dep 0 dep_name)
list(GET dep 1 dep_ver)
list(APPEND target_deps_seen "${dep_name}\;${dep_ver}")
endif()
endif()
endforeach()
set(target_deps "${target_deps_seen}")
if (DEFINED qtdeps)
list(REMOVE_DUPLICATES qtdeps)
endif()
get_target_property(hasModuleHeaders "${target}" MODULE_HAS_HEADERS)
if (${hasModuleHeaders})
qt_internal_write_depends_file("${target}" ${qtdeps})
endif()
if(third_party_deps OR main_module_tool_deps OR target_deps)
set(path_suffix "${INSTALL_CMAKE_NAMESPACE}${target}")
qt_path_join(config_build_dir ${QT_CONFIG_BUILD_DIR} ${path_suffix})
qt_path_join(config_install_dir ${QT_CONFIG_INSTALL_DIR} ${path_suffix})
# Configure and install ModuleDependencies file.
configure_file(
"${QT_CMAKE_DIR}/QtModuleDependencies.cmake.in"
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}Dependencies.cmake"
@ONLY
)
qt_install(FILES
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}Dependencies.cmake"
DESTINATION "${config_install_dir}"
COMPONENT Devel
)
endif()
if(tool_deps)
set(path_suffix "${INSTALL_CMAKE_NAMESPACE}${target}Tools")
qt_path_join(config_build_dir ${QT_CONFIG_BUILD_DIR} ${path_suffix})
qt_path_join(config_install_dir ${QT_CONFIG_INSTALL_DIR} ${path_suffix})
# Configure and install ModuleToolDependencies file.
configure_file(
"${QT_CMAKE_DIR}/QtModuleToolsDependencies.cmake.in"
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}ToolsDependencies.cmake"
@ONLY
)
qt_install(FILES
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}ToolsDependencies.cmake"
DESTINATION "${config_install_dir}"
COMPONENT Devel
)
endif()
endfunction()
function(qt_internal_create_plugin_depends_file target)
get_target_property(qt_module "${target}" QT_MODULE)
get_target_property(target_deps "${target}" _qt_target_deps)
set(target_deps_seen "")
qt_collect_third_party_deps()
# Dirty hack because https://gitlab.kitware.com/cmake/cmake/issues/19200
foreach(dep ${target_deps})
if(dep)
list(FIND target_deps_seen "${dep}" dep_seen)
if(dep_seen EQUAL -1)
list(LENGTH dep len)
if(NOT (len EQUAL 2))
message(FATAL_ERROR "List '${dep}' should look like QtFoo;version")
endif()
list(GET dep 0 dep_name)
list(GET dep 1 dep_ver)
list(APPEND target_deps_seen "${dep_name}\;${dep_ver}")
endif()
endif()
endforeach()
set(target_deps "${target_deps_seen}")
if(third_party_deps OR target_deps)
# Setup build and install paths
if(qt_module)
set(path_suffix "${INSTALL_CMAKE_NAMESPACE}${qt_module}")
else()
set(path_suffix "${INSTALL_CMAKE_NAMESPACE}${target}")
endif()
qt_path_join(config_build_dir ${QT_CONFIG_BUILD_DIR} ${path_suffix})
qt_path_join(config_install_dir ${QT_CONFIG_INSTALL_DIR} ${path_suffix})
# Configure and install ModuleDependencies file.
configure_file(
"${QT_CMAKE_DIR}/QtPluginDependencies.cmake.in"
"${config_build_dir}/${target}Dependencies.cmake"
@ONLY
)
qt_install(FILES
"${config_build_dir}/${target}Dependencies.cmake"
DESTINATION "${config_install_dir}"
COMPONENT Devel
)
endif()
endfunction()
# Create Depends.cmake & Depends.h files for all modules and plug-ins.
function(qt_internal_create_depends_files)
message("Generating depends files for ${QT_KNOWN_MODULES}...")
foreach (target ${QT_KNOWN_MODULES})
qt_internal_create_module_depends_file(${target})
endforeach()
message("Generating depends files for ${QT_KNOWN_PLUGINS}...")
foreach (target ${QT_KNOWN_PLUGINS})
qt_internal_create_plugin_depends_file(${target})
endforeach()
endfunction()
# This function creates the Qt<Module>Plugins.cmake used to list all
# the plug-in target files.
function(qt_internal_create_plugins_files)
message("Generating Plugins files for ${QT_KNOWN_MODULES}...")
foreach (target ${QT_KNOWN_MODULES})
qt_path_join(config_build_dir ${QT_CONFIG_BUILD_DIR} ${INSTALL_CMAKE_NAMESPACE}${target})
qt_path_join(config_install_dir ${QT_CONFIG_INSTALL_DIR} ${INSTALL_CMAKE_NAMESPACE}${target})
set(_plugins_file "")
get_target_property(qt_plugins "${target}" QT_PLUGINS)
if(qt_plugins)
foreach (plugin ${qt_plugins})
set(_plugins_file "${_plugins_file}include(\"\${CMAKE_CURRENT_LIST_DIR}/${plugin}Config.cmake\")\n")
endforeach()
if(NOT ("x${_plugins_file}" STREQUAL "x"))
file(WRITE "${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}Plugins.cmake" "${_plugins_file}")
qt_install(FILES
"${config_build_dir}/${INSTALL_CMAKE_NAMESPACE}${target}Plugins.cmake"
DESTINATION "${config_install_dir}"
COMPONENT Devel
)
endif()
endif()
endforeach()
endfunction()
function(qt_generate_build_internals_extra_cmake_code)
if(PROJECT_NAME STREQUAL "QtBase")
# Propagate common variables via BuildInternals package.
string(APPEND QT_BUILD_INTERNALS_EXTRA_CMAKE_CODE
"set(QT_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})")
string(APPEND QT_BUILD_INTERNALS_EXTRA_CMAKE_CODE "
option(BUILD_SHARED_LIBS \"Build Qt statically or dynamically\" ${BUILD_SHARED_LIBS})")
string(APPEND QT_BUILD_INTERNALS_EXTRA_CMAKE_CODE "
set(QT_CMAKE_EXPORT_NAMESPACE ${QT_CMAKE_EXPORT_NAMESPACE})")
string(APPEND QT_BUILD_INTERNALS_EXTRA_CMAKE_CODE "
set(INSTALL_CMAKE_NAMESPACE ${INSTALL_CMAKE_NAMESPACE})")
string(APPEND QT_BUILD_INTERNALS_EXTRA_CMAKE_CODE "
set(CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE})")
string(APPEND QT_BUILD_INTERNALS_EXTRA_CMAKE_CODE "
set(QT_BUILD_INTERNALS_PATH \"\${CMAKE_CURRENT_LIST_DIR}\")")
# Propagate the original install prefix, so that a developer building a child module can
# specify CMAKE_PREFIX_PATH for finding the Qt modules instead of CMAKE_INSTALL_PREFIX.
string(APPEND QT_BUILD_INTERNALS_EXTRA_CMAKE_CODE "
set(CMAKE_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX} CACHE PATH
\"Install path prefix, prepended onto install directories.\" FORCE)")
# Propagate developer builds to other modules via BuildInternals package.
if(FEATURE_developer_build)
string(APPEND QT_BUILD_INTERNALS_EXTRA_CMAKE_CODE "
set(FEATURE_developer_build ON CACHE BOOL \"Developer build.\" FORCE)")
endif()
qt_path_join(extra_file_path
${QT_CONFIG_BUILD_DIR}
${INSTALL_CMAKE_NAMESPACE}BuildInternals/QtBuildInternalsExtra.cmake)
file(GENERATE OUTPUT "${extra_file_path}"
CONTENT "${QT_BUILD_INTERNALS_EXTRA_CMAKE_CODE}")
endif()
endfunction()
qt_internal_create_depends_files()
qt_generate_build_internals_extra_cmake_code()
qt_internal_create_plugins_files()