> > > I don't think that's necessary, per above. You just have to access the > vars via pointer indirection always, so long as *any* Pg version you > support has ever lacked dllexport or DEF entry, so you can't dllimport the > var. > > You could enable direct dllimport if PG_VERSION_NUM shows you're on a new > enough version, but you'd need to use conditionally compiled inlines or > something to switch between the methods of accessing it, so there's not > much point. You just declare > > extern int* log_min_messages_p; > > ... and use that, probably also #define'ing log_min_messages away after > including the Pg headers so that you can't reference it accidentally. >
Actually, if __declspec(dllexport) or a .DEF entry was added in, say, 9.4.5, you could probably just: #if PG_VERSION_NUM < 90405 extern int* log_min_messages_p; #define log_min_messages (*log_min_messages_p) #endif after including all PostgreSQL headers. It won't work for inline functions defined in PostgreSQL headers, but should otherwise be OK I think. (again, untested) -- Craig Ringer http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
