blah.cpp

extern "C" {
	// This is global, but you can call it what you like
	inline void MyPrefixedCFShow(const void *object) {
		// Redeclared system function is local scope and counts as extern "C"
		extern void CFShow(const void * object);
		CFShow(object);
	}
}

class DumbThing {
public:
	static void wibble(const void *obj) {
		// We can call MyPrefixedCFShow() here, but not CFShow()
		MyPrefixedCFShow(obj);
	}
};


// Include header with official declaration; fine because it matches
#include <CoreFoundation/CoreFoundation.h>

int main(int argc, const char * argv[]) {
	DumbThing::wibble(CFSTR("Hello, World!"));
}