Oops, forgot to add what I took away

src/backend/port/dynloader/sco.h

+/*-------------------------------------------------------------------------
+ *
+ * port-protos.h--
+ *	  port-specific prototypes for SCO 3.2v5.2
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: sco.h,v 1.1 1997/12/20 03:38:19 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PORT_PROTOS_H
+#define PORT_PROTOS_H
+
+#include <dlfcn.h>
+#include "fmgr.h"				/* for func_ptr */
+#include "utils/dynamic_loader.h"
+
+/* dynloader.c */
+/*
+ * Dynamic Loader on SCO 3.2v5.0.2
+ *
+ * this dynamic loader uses the system dynamic loading interface for shared
+ * libraries (ie. dlopen/dlsym/dlclose). The user must specify a shared
+ * library as the file to be dynamically loaded.
+ *
+ */
+#define pg_dlopen(f)	dlopen(f,1)
+#define pg_dlsym		dlsym
+#define pg_dlclose		dlclose
+#define pg_dlerror		dlerror
+
+/* port.c */
+
+#endif							/* PORT_PROTOS_H */

src/backend/port/dynloader/sunos4.h

+/*-------------------------------------------------------------------------
+ *
+ * port-protos.h--
+ *	  port-specific prototypes for SunOS 4
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: sunos4.h,v 1.1 1997/12/20 03:38:20 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PORT_PROTOS_H
+#define PORT_PROTOS_H
+
+#include <dlfcn.h>
+#include "fmgr.h"				/* for func_ptr */
+#include "utils/dynamic_loader.h"
+
+/* dynloader.c */
+/*
+ * Dynamic Loader on SunOS 4.
+ *
+ * this dynamic loader uses the system dynamic loading interface for shared
+ * libraries (ie. dlopen/dlsym/dlclose). The user must specify a shared
+ * library as the file to be dynamically loaded.
+ *
+ */
+#define pg_dlopen(f)	dlopen(f, 1)
+#define pg_dlsym		dlsym
+#define pg_dlclose		dlclose
+#define pg_dlerror		dlerror
+
+#endif							/* PORT_PROTOS_H */