QWindows static linking (Qt Plugin)

DmitriyBobrov

I have a driver .dll on c++. It uses Qt::Gui, Network, Core and Widgets. Now there are shared. I could make them static and linked them to .dll statically by building with conan package manager with "qt:shared=False". But in result folder (after installing our product) there is "platforms" folder and qwindows.dll in them that is also used by .dll. I need link it statically too. If I tempoparily delete qwindows.dll, I get:

A code in Cmakelists.txt like find_library (LIB qwindows.lib PATH/TO/LIB) and then target_link_libraries (.... LIB) doesn't work.

I provide some cmakelists:

Root cmakelists (some interesting strings):

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17 -O3 -Wall -Wextra -Waddress -Wpedantic -Wfatal-errors")
if(${FC_CI_BUILD} STREQUAL "OFF")
    set(Qt5_DIR ${CONAN_QT_ROOT})
    set(sentry_DIR ${CONAN_SENTRY-NATIVE_ROOT})
    list(APPEND CMAKE_FIND_ROOT_PATH
        ${Qt5_DIR}
        ${CONAN_CAF_ROOT}
        ${CONAN_PROTOBUF_ROOT}
        ${CONAN_FRUIT_ROOT}
        ${CONAN_OPENSSL_ROOT}
        ${CONAN_BOOST_ROOT}
    )
    set(Boost_USE_STATIC_LIBS ON)
endif()
find_package(Qt5 COMPONENTS Core Network Widgets Gui REQUIRED)

Driver target

project(driver VERSION ${FC_DRIVER_VERSION})
include_directories(${PROJECT_BINARY_BIN})
set(QT_UI_DRV
        driver/ui/properties.ui
        driver/ui/kkt_settings.ui
        driver/ui/about.ui
        driver/ui/add_picture_in_cliche.ui
)
set(QT_HDRS_DRV
        driver/ui/properties.h
        driver/ui/kkt_settings.h
        driver/ui/about.h
        driver/ui/add_picture_in_cliche.h
)
set(QT_DRV_RCC
        driver/ui/driver.qrc
        driver/duktape/scripts/driver_scripts.qrc
)
if(NOT ${CMAKE_SYSTEM_NAME} STREQUAL Android)
        find_package(Qt5 COMPONENTS Widgets Gui REQUIRED)
        include(FiscalCoreQt5Widgets)
        fc_qt5_wrap_ui(QT_UI_DRV_WRAPPED ${QT_UI_DRV} FOLDER driver/ui)
        qt5_wrap_cpp(QT_SRCS_DRV_WRAPPED ${QT_HDRS_DRV})
endif()
qt5_add_resources(QT_DRV_RCC_WRAPPED ${QT_DRV_RCC})

set(DRIVER_SRCS
        *.cpp
        ${QT_UI_DRV_WRAPPED}
        ${QT_SRCS_DRV_WRAPPED}
        ${QT_DRV_RCC_WRAPPED}
)
list(APPEND FISCAL_CORE_DRIVER_SRCS
                driver/ui/properties.cpp
                driver/ui/kkt_settings.cpp
                driver/ui/about.cpp
                driver/ui/add_picture_in_cliche.cpp
                ${QT_HDRS_DRV}
                standard_path_windows.cpp
        )
add_library(${PROJECT_NAME} SHARED ${FISCAL_CORE_DRIVER_SRCS})

set_property(TARGET ${PROJECT_NAME} PROPERTY POSITION_INDEPENDENT_CODE ON)
target_compile_definitions(${PROJECT_NAME} PUBLIC SPDLOG_WCHAR_FILENAMES)

set(FISCAL_CORE_DRIVER_DEPS
        Qt5::Core
        Qt5::Network
        Qt5::Gui
        Qt5::Widgets
        ${FRUIT_LIBRARY}
        ${CAF_LIBRARIES}
        ${Protobuf_LIBRARIES}
        ${CAF_EXTRA_LDFLAGS}
        Boost::filesystem
        Boost::fiber
        Boost::locale
        duktape
        ${PNG_LIBRARIES}
)

target_link_libraries(${PROJECT_NAME} PRIVATE ${FISCAL_CORE_DRIVER_DEPS})

I've tried:

Added Qt5::QWindowsIntegrationPlugin
find_library (qwindows.lib) as mentioned above