C++ выбор библиотеки для работы с imap

// Indicate that we want to use XOAUTH2 SASL mechanism
vmime::security::sasl::SASLMechanismFactory::getInstance()->
    registerMechanism <vmime::security::sasl::XOAuth2SASLMechanism>("XOAUTH2");

// Create a new session
vmime::shared_ptr <vmime::net::session> sess = vmime::net::session::create();

// Use a custom authenticator to force using XOAUTH2 mechanism
vmime::shared_ptr <vmime::security::authenticator> xoauth2Auth =
    vmime::make_shared <vmime::security::sasl::XOAuth2SASLAuthenticator>
        (vmime::security::sasl::XOAuth2SASLAuthenticator::MODE_EXCLUSIVE);

// Create a new SMTPS service to GMail
vmime::shared_ptr <vmime::net::transport> tr = sess->getTransport(
    vmime::utility::url("smtps://smtp.gmail.com:465"), xoauth2Auth
);

$ git clone https://github.com/kisli/vmime.git vmime.git

# For reference: https://cmake.org/Wiki/CmakeMingw

# the name of the target operating system
set(CMAKE_SYSTEM_NAME Windows)

# which compilers to use for C and C++
SET(CMAKE_C_COMPILER i686-w64-mingw32-gcc)
SET(CMAKE_CXX_COMPILER i686-w64-mingw32-g++)
SET(CMAKE_RC_COMPILER i686-w64-mingw32-windres)

# here is the target environment located
SET(CMAKE_FIND_ROOT_PATH /usr/lib/gcc/i686-w64-mingw32/5.3-win32 /abs/path/to/vmime/install)

# adjust the default behaviour of the FIND_XXX() commands:
# search headers and libraries in the target environment, search 
# programs in the host environment
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

# TODO for gtk+-3.0 GUI examples
#set(ENV{PKG_CONFIG_LIBDIR} ${CMAKE_FIND_ROOT_PATH}/lib/pkgconfig)
#set(ENV{PKG_CONFIG_PATH} ${CMAKE_FIND_ROOT_PATH}/lib/pkgconfig)

$ mkdir build && cd build
$ cmake \
-DCMAKE_TOOLCHAIN_FILE=../Toolchain-mingw.cmake \
-DCMAKE_INSTALL_PREFIX=/abs/path/to/vmime/install \
-DVMIME_SHARED_PTR_USE_CXX=ON -DVMIME_SHARED_PTR_USE_BOOST=OFF \
-D_RUN_RESULT_VAR=0 \
-DVMIME_HAVE_SASL_SUPPORT=OFF -DVMIME_HAVE_TLS_SUPPORT=OFF \
-DVMIME_BUILD_SAMPLES=OFF \
../vmime.git
$ make -j4

$ ls -gG build/bin/libvmime.dll build/lib/libvmime.a build/lib/libvmime.dll.a
-rwxr-xr-x 1 54145453 Oct 17 23:27 build/bin/libvmime.dll
-rw-r--r-- 1 68660076 Oct 17 23:26 build/lib/libvmime.a
-rw-r--r-- 1  2778090 Oct 17 23:27 build/lib/libvmime.dll.a
$ du -sh
356M	.

CMake Warning at CMakeLists.txt:807 (MESSAGE):
  *** ICU or iconv library should always be preferred over
  MultiByteToWideChar/WideCharToMultiByte on Windows, as error handling is
  very poor, and there is no streaming support.

int main(int argc, char *argv[])
{
//...
    vmime::shared_ptr<vmime::net::session>
        sess = vmime::make_shared<vmime::net::session>();
//...
}

    vmime::shared_ptr <vmime::net::session>
        sess = vmime::net::session::create();

In file included from /usr/local/include/vmime/net/service.hpp:36:0,
                 from /usr/local/include/vmime/net/serviceFactory.hpp:42,
                 from /usr/local/include/vmime/vmime.hpp:137,
                 from /media/rumgot/rumgot16gb/vmimeTest/main.cpp:1:
/usr/include/c++/5/ext/new_allocator.h: In instantiation of ‘void __gnu_cxx::new_allocator<_Tp>::construct(_Up*, _Args&& ...) [with _Up = vmime::net::session; _Args = {}; _Tp = vmime::net::session]’:
/usr/include/c++/5/bits/alloc_traits.h:530:4:   required from ‘static void std::allocator_traits<std::allocator<_CharT> >::construct(std::allocator_traits<std::allocator<_CharT> >::allocator_type&, _Up*, _Args&& ...) [with _Up = vmime::net::session; _Args = {}; _Tp = vmime::net::session; std::allocator_traits<std::allocator<_CharT> >::allocator_type = std::allocator<vmime::net::session>]’
/usr/include/c++/5/bits/shared_ptr_base.h:522:39:   required from ‘std::_Sp_counted_ptr_inplace<_Tp, _Alloc, _Lp>::_Sp_counted_ptr_inplace(_Alloc, _Args&& ...) [with _Args = {}; _Tp = vmime::net::session; _Alloc = std::allocator<vmime::net::session>; __gnu_cxx::_Lock_policy _Lp = (__gnu_cxx::_Lock_policy)2u]’
/usr/include/c++/5/bits/shared_ptr_base.h:617:4:   required from ‘std::__shared_count<_Lp>::__shared_count(std::_Sp_make_shared_tag, _Tp*, const _Alloc&, _Args&& ...) [with _Tp = vmime::net::session; _Alloc = std::allocator<vmime::net::session>; _Args = {}; __gnu_cxx::_Lock_policy _Lp = (__gnu_cxx::_Lock_policy)2u]’
/usr/include/c++/5/bits/shared_ptr_base.h:1097:35:   required from ‘std::__shared_ptr<_Tp, _Lp>::__shared_ptr(std::_Sp_make_shared_tag, const _Alloc&, _Args&& ...) [with _Alloc = std::allocator<vmime::net::session>; _Args = {}; _Tp = vmime::net::session; __gnu_cxx::_Lock_policy _Lp = (__gnu_cxx::_Lock_policy)2u]’
/usr/include/c++/5/bits/shared_ptr.h:319:64:   required from ‘std::shared_ptr<_Tp>::shared_ptr(std::_Sp_make_shared_tag, const _Alloc&, _Args&& ...) [with _Alloc = std::allocator<vmime::net::session>; _Args = {}; _Tp = vmime::net::session]’
/usr/include/c++/5/bits/shared_ptr.h:620:39:   required from ‘std::shared_ptr<_Tp1> std::allocate_shared(const _Alloc&, _Args&& ...) [with _Tp = vmime::net::session; _Alloc = std::allocator<vmime::net::session>; _Args = {}]’
/usr/include/c++/5/bits/shared_ptr.h:635:39:   required from ‘std::shared_ptr<_Tp1> std::make_shared(_Args&& ...) [with _Tp = vmime::net::session; _Args = {}]’
/media/rumgot/rumgot16gb/vmimeTest/main.cpp:7:60:   required from here
/usr/local/include/vmime/net/session.hpp:181:2: error: ‘vmime::net::session::session()’ is private
  session();
  ^
In file included from /usr/include/x86_64-linux-gnu/c++/5/bits/c++allocator.h:33:0,
                 from /usr/include/c++/5/bits/allocator.h:46,
                 from /usr/include/c++/5/string:41,
                 from /usr/local/include/vmime/base.hpp:28,
                 from /usr/local/include/vmime/vmime.hpp:32,
                 from /media/rumgot/rumgot16gb/vmimeTest/main.cpp:1:
/usr/include/c++/5/ext/new_allocator.h:120:4: error: within this context
  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
    ^
make[2]: *** [CMakeFiles/vmimeTest.dir/main.cpp.o] Ошибка 1
make[1]: *** [CMakeFiles/vmimeTest.dir/all] Ошибка 2
make: *** [all] Ошибка 2

// ...
private:

    session(); // ЭТО 181 СТРОКА !!!
    session(const propertySet& props);
    
    propertySet m_props;

#if VMIME_HAVE_TLS_SUPPORT
    shared_ptr <tls::TLSProperties> m_tlsProps;
#endif // VMIME_HAVE_TLS_SUPPORT

};
// ...

//...
int main(int argc, char *argv[])
{
    vmime::net::session sess;
    return 0;
}

In file included from /usr/local/include/vmime/net/service.hpp:36:0,
                 from /usr/local/include/vmime/net/serviceFactory.hpp:42,
                 from /usr/local/include/vmime/vmime.hpp:137,
                 from /media/rumgot/rumgot16gb/vmimeTest/main.cpp:1:
/usr/local/include/vmime/net/session.hpp: In function ‘int main(int, char**)’:
/usr/local/include/vmime/net/session.hpp:181:2: error: ‘vmime::net::session::session()’ is private
  session();
  ^
/media/rumgot/rumgot16gb/vmimeTest/main.cpp:9:25: error: within this context
     vmime::net::session sess;
                         ^
make[2]: *** [CMakeFiles/vmimeTest.dir/main.cpp.o] Ошибка 1
make[1]: *** [CMakeFiles/vmimeTest.dir/all] Ошибка 2
make: *** [all] Ошибка 2