bug for static compile

[Leex2000]

I use vs2017 in my work under Windows，I need /Mt to compile my project, but QT default compile is /Md.
I have to recompile QT with static mode，I config it such as:
configure -confirm-license -opensource -debug-and-release -static -static-runtime -force-debug-info -nomake examples -nomake tests -prefix D:/qt/Qt5.10.1_static
After a long compile time，I got static version QT.
I make a empty project，compile and run，i got a fatal!
I try to debug it，

qguiapplication:
static void init_platform(const QString &pluginArgument, const QString &platformPluginPath, const QString &platformThemeName, int &argc, char **argv)
{
...
    QGuiApplicationPrivate::platform_integration = QPlatformIntegrationFactory::create(name, arguments, argc, argv, platformPluginPath);
    if (Q_UNLIKELY(!QGuiApplicationPrivate::platform_integration)) {
...
}
the platform_integration is null, then fatal!
but in qfactoryloader.cpp:
void QFactoryLoader::update()
{
#ifdef QT_SHARED
...
#else
    Q_D(QFactoryLoader);
    if (qt_debug_component()) {
        qDebug() << "QFactoryLoader::QFactoryLoader() ignoring" << d->iid
                 << "since plugins are disabled in static builds";
    }
#endif

the QFactoryLoader think "plugins are disabled in static builds"，but init_platform doesn't think so.
I don't known how to fix it.