I’m trying to get a libary file generated using OpenVPN3 and I’m having difficulty building it with java. I changed CMakeLists.txt in the clients folder this way:

include(findcoredeps)
include(findswigdeps)

if (BUILD_SWIG_LIB)
    set_property(SOURCE ovpncli.i PROPERTY CPLUSPLUS ON)
    if (NOT MSVC OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
        set_property(SOURCE ovpncli.i PROPERTY GENERATED_COMPILE_OPTIONS -Wno-deprecated-declarations -Wno-sometimes-uninitialized -Wno-class-memaccess -Wno-unused-function -Wno-unknown-warning-option)
    endif()

    swig_add_library(ovpnclilib
        TYPE SHARED
        LANGUAGE java
        SOURCES ovpncli.cpp ovpncli.i
        )

    set_property(TARGET ovpnclilib PROPERTY SWIG_INCLUDE_DIRECTORIES ${CORE_DIR})

    add_core_dependencies(ovpnclilib)

 
    find_package(Java REQUIRED)
    find_package(JNI REQUIRED)

    target_link_libraries(ovpnclilib ${JNI_LIBRARIES})
    target_include_directories(ovpnclilib PRIVATE ${JNI_INCLUDE_DIRS} ${CMAKE_CURRENT_SOURCE_DIR})

    set_target_properties(ovpnclilib PROPERTIES OUTPUT_NAME "_ovpncli")
    set_target_properties(ovpnclilib PROPERTIES PREFIX "")

endif ()

the rest of the files remained unchanged.

When I’m trying to build lib in Visual Studio, I get the following errors:

ovpncliJAVA_wrap.obj : error LNK2001: unresolved external symbol "private: virtual void __cdecl openvpn::ClientAPI::OpenVPNClient::connect_attach(void)" (?connect_attach@OpenVPNClient@ClientAPI@openvpn@@EEAAXXZ)

ovpncliJAVA_wrap.obj : error LNK2001: unresolved external symbol "private: virtual void __cdecl openvpn::ClientAPI::OpenVPNClient::connect_pre_run(void)" (?connect_pre_run@OpenVPNClient@ClientAPI@openvpn@@EEAAXXZ)

ovpncliJAVA_wrap.obj : error LNK2001: unresolved external symbol "private: virtual void __cdecl openvpn::ClientAPI::OpenVPNClient::connect_run(void)" (?connect_run@OpenVPNClient@ClientAPI@openvpn@@EEAAXXZ)

ovpncliJAVA_wrap.obj : error LNK2001: unresolved external symbol "private: virtual void __cdecl openvpn::ClientAPI::OpenVPNClient::connect_session_stop(void)" (?connect_session_stop@OpenVPNClient@ClientAPI@openvpn@@EEAAXXZ)

ovpncliJAVA_wrap.obj : error LNK2001: unresolved external symbol "private: virtual class openvpn::Stop * __cdecl openvpn::ClientAPI::OpenVPNClient::get_async_stop(void)" (?get_async_stop@OpenVPNClient@ClientAPI@openvpn@@EEAAPEAVStop@3@XZ)

Does anyone know the correct way to compile it? Or the actions that need to do for the java build?