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/* Qt5 moc expands macros when defining signals. The SIGNAL() macro is

   a stringification, so it does not expand macros. We have signals

   where one of the types is a #define (for the variations on

   std::shared_ptr). In qt5, the connection does not work because the

   signal string is different between the definition and the connect

   call, because of the different macro expansion. We have to use

   another level of macro in Qt5 to force macro expansion, but not in

   Qt4, so we both define the XSIGNAL and XSLOT macros here, and have

   ifdefs in the code. What a mess... */

#if (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))

#define XSIGNAL(X) SIGNAL(X)

#define XSLOT(X) SLOT(X)

#endif