--- src/gdb/macosx/macosx-nat-dyld.c
+++ src/gdb/macosx/macosx-nat-dyld.c
@@ -788,7 +788,7 @@
        }
      else
        {
-#if defined (NM_NEXTSTEP)
+#if defined (NM_NEXTSTEP) && defined(TASK_DYLD_INFO_COUNT)
           if (macosx_status->task == TASK_NULL)
             return 0;