$NetBSD$

--- gtk2_ardour/ardour_ui.cc.orig	2010-01-27 07:55:03.000000000 +0000
+++ gtk2_ardour/ardour_ui.cc
@@ -684,11 +684,15 @@ ARDOUR_UI::check_memory_locking ()
 		int64_t ram;
 		long pages, page_size;
 
+#if defined(_SC_PHYS_PAGES)
 		if ((page_size = sysconf (_SC_PAGESIZE)) < 0 ||(pages = sysconf (_SC_PHYS_PAGES)) < 0) {
 			ram = 0;
 		} else {
 			ram = (int64_t) pages * (int64_t) page_size;
 		}
+#else
+        ram = 0;
+#endif
 
 		if (getrlimit (RLIMIT_MEMLOCK, &limits)) {
 			return;