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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
if (NOT (WIN32 OR UIKIT))
return()
endif()
# The EntryPointPrivate package consists of two targets: one for CMake consumption,
# and one internal that produces the static library. Together these form the
# entrypoint module in qmake terms. This split allows us to inject library
# dependencies that need to go _before_ the static library, to work around
# CMake's lack of whole archive.
# ---- Set up an intermediate imported library for libmingw32.a ----
set(export_name_prefix "${INSTALL_CMAKE_NAMESPACE}EntryPointPrivate")
qt_path_join(config_install_dir ${QT_CONFIG_INSTALL_DIR} ${export_name_prefix})
set(extra_cmake_includes_arg)
if(MINGW)
# The mingw32 library needs to come before the entry-point library in the linker line, so that
# the static linker will pick up the WinMain symbol from the entry-point library. In order to
# achieve that reliably, we create an imported library EntryPointMinGW32 that represents
# libmingw32.a and add a link dependency to EntryPointImplementation. The resulting dependency
# chain looks like this: EntryPointPrivate -> EntryPointMinGW32 -> EntryPointImplementation
set(mingw32target_config_file "${INSTALL_CMAKE_NAMESPACE}EntryPointMinGW32Target.cmake")
configure_file("EntryPointMinGW32Target.cmake.in" "${mingw32target_config_file}" @ONLY)
qt_copy_or_install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${mingw32target_config_file}"
DESTINATION "${config_install_dir}")
# In prefix builds we also need to copy the file into the build config directory, so that the
# build-dir Qt6Config.cmake finds the files when building other repos in a top-level build.
if(QT_WILL_INSTALL)
get_filename_component(absolute_config_install_dir "${config_install_dir}" ABSOLUTE
BASE_DIR "${QT_BUILD_DIR}")
file(COPY "${CMAKE_CURRENT_BINARY_DIR}/${mingw32target_config_file}"
DESTINATION "${absolute_config_install_dir}")
endif()
include("${CMAKE_CURRENT_BINARY_DIR}/${mingw32target_config_file}")
set(extra_cmake_includes_arg EXTRA_CMAKE_INCLUDES "${mingw32target_config_file}")
endif()
# ---- The header-only target produces the actual module ----
qt_internal_add_module(EntryPointPrivate
HEADER_MODULE
INTERNAL_MODULE
NO_SYNC_QT
NO_MODULE_HEADERS
NO_PRIVATE_MODULE
NO_ADDITIONAL_TARGET_INFO
${extra_cmake_includes_arg}
)
set(export_targets EntryPointPrivate)
# We don't need any include paths or default module defines
set_target_properties(EntryPointPrivate PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ""
INTERFACE_COMPILE_DEFINITIONS ""
)
if(WIN32)
# Not all platforms require the static library
set(using_entrypoint_library "yes")
endif()
if(using_entrypoint_library)
# ---- While the static library target does the work ----
qt_internal_add_cmake_library(EntryPointImplementation STATIC
INCLUDE_DIRECTORIES
$<TARGET_PROPERTY:Qt::Core,INTERFACE_INCLUDE_DIRECTORIES>
)
list(APPEND export_targets EntryPointImplementation)
set_target_properties(EntryPointImplementation PROPERTIES
OUTPUT_NAME "${INSTALL_CMAKE_NAMESPACE}EntryPoint${QT_LIBINFIX}"
ARCHIVE_OUTPUT_DIRECTORY "${QT_BUILD_DIR}/${INSTALL_LIBDIR}"
)
qt_handle_multi_config_output_dirs(EntryPointImplementation)
qt_internal_add_target_aliases(EntryPointImplementation)
qt_set_common_target_properties(EntryPointImplementation)
endif()
# ---- Now we're ready to set up the platform specifics ----
if(WIN32)
qt_internal_extend_target(EntryPointImplementation
SOURCES qtentrypoint_win.cpp
LIBRARIES shell32
)
if(MSVC)
# Store debug information inside the static lib
qt_internal_replace_compiler_flags(
"/Zi" "/Z7"
CONFIGS DEBUG RELWITHDEBINFO)
endif()
if(MINGW)
# Link against EntryPointImplementation via EntryPointMinGW32
target_link_libraries(EntryPointPrivate INTERFACE EntryPointMinGW32)
set_property(TARGET EntryPointPrivate
APPEND PROPERTY INTERFACE_QT_MODULE_LDFLAGS "-lmingw32"
)
target_compile_definitions(EntryPointPrivate INTERFACE QT_NEEDS_QMAIN)
qt_internal_extend_target(EntryPointImplementation DEFINES QT_NEEDS_QMAIN)
endif()
qt_internal_add_sync_header_dependencies(EntryPointImplementation Core)
endif()
if(UIKIT)
set_target_properties(EntryPointPrivate PROPERTIES
INTERFACE_LINK_OPTIONS "-Wl,-e,_qt_main_wrapper"
)
set_property(TARGET EntryPointPrivate
APPEND PROPERTY INTERFACE_QT_MODULE_LDFLAGS "-Wl,-e,_qt_main_wrapper"
)
endif()
# ---- Finally, make sure the static library can be consumed by clients -----
if(using_entrypoint_library)
target_link_libraries(EntryPointPrivate INTERFACE Qt6::EntryPointImplementation)
qt_internal_get_target_property(entrypoint_implementation_ldflags
EntryPointImplementation QT_MODULE_LDFLAGS)
set_target_properties(EntryPointPrivate PROPERTIES
INTERFACE_QT_MODULE_PRI_EXTRA_CONTENT "
QT.entrypoint_implementation.name = QtEntryPointImplementation
QT.entrypoint_implementation.module = Qt6EntryPoint${QT_LIBINFIX}
QT.entrypoint_implementation.ldflags = ${entrypoint_implementation_ldflags}
QT.entrypoint_implementation.libs = $$QT_MODULE_LIB_BASE
QT.entrypoint_implementation.module_config = staticlib v2 internal_module
"
INTERFACE_QT_MODULE_DEPENDS "entrypoint_implementation"
)
set(export_name "${INSTALL_CMAKE_NAMESPACE}EntryPointPrivateTargets")
qt_install(TARGETS EntryPointImplementation EXPORT ${export_name})
qt_generate_prl_file(EntryPointImplementation "${INSTALL_LIBDIR}")
endif()
qt_internal_export_additional_targets_file(
TARGETS ${export_targets}
EXPORT_NAME_PREFIX ${export_name_prefix}
CONFIG_INSTALL_DIR "${config_install_dir}")
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