Need to define DL_EXPORT, of course!
diff --git a/PC/config.h b/PC/config.h
index a719269..0573964 100644
--- a/PC/config.h
+++ b/PC/config.h
@@ -83,6 +83,7 @@
 #endif
 #ifdef USE_DL_EXPORT
 #define DL_IMPORT(RTYPE) __declspec(dllexport) RTYPE
+#define DL_EXPORT(RTYPE) __declspec(dllexport) RTYPE
 #endif
 
 #define HAVE_LONG_LONG 1