Fix up the alpha port/dynloader for configure

src/backend/port/dynloader/alpha.c

@@ -0,0 +1,4 @@
+/* Dummy file used for nothing at this point
+ *
+ * see alpha.h
+ */

src/backend/port/dynloader/alpha.h

@@ -0,0 +1,35 @@
+/*-------------------------------------------------------------------------
+ *
+ * alpha.h--
+ *	  prototypes for OSF/1-specific routines
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: alpha.h,v 1.1 1998/02/02 03:49:11 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef PORT_PROTOS_H
+#define PORT_PROTOS_H
+
+#include <dlfcn.h>
+#include "utils/dynamic_loader.h"
+
+/* dynloader.c */
+
+/*
+ * Dynamic Loader on Alpha OSF/1.x
+ *
+ * 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, RTLD_LAZY)
+#define  pg_dlsym(h, f) ((func_ptr)dlsym(h, f))
+#define  pg_dlclose(h)	dlclose(h)
+#define  pg_dlerror()	dlerror()
+
+#endif							/* PORT_PROTOS_H */