$NetBSD: patch-gnuradio-runtime_lib_constants.cc.in,v 1.2 2021/12/11 14:57:50 tnn Exp $

Override broken PREFIX detection.

--- gnuradio-runtime/lib/constants.cc.in.orig	2021-10-31 14:28:27.000000000 +0000
+++ gnuradio-runtime/lib/constants.cc.in
@@ -28,6 +28,7 @@ const std::string prefix()
     if (prefix != NULL)
         return prefix;
 
+    return "@PREFIX@";
     path prefix_rel_lib = "@prefix_relative_to_lib@";
     path gr_runtime_lib_path = boost::dll::this_line_location();
     // Ensure that the lib path is absolute (see next comment)