4 files changed, 18 insertions, 9 deletions
diff --git a/gnuradio-examples/c++/dial_tone/README b/gnuradio-examples/c++/dial_tone/README
index cfc545802..6d5ed5059 100644
--- a/gnuradio-examples/c++/dial_tone/README
+++ b/gnuradio-examples/c++/dial_tone/README
@@ -1,2 +1,16 @@
 This example requires that gr-audio-alsa be built in the main tree in order
 to compile successfully.  It is not built automatically.
+
+To build this example, you must make two modifications to the build system:
+
+1) Add the following line inside config/grc_gnuradio_examples.m4:
+
+   gnuradio-examples/c++/dial_tone/Makefile
+   
+   ...to the list of Makefiles already in there.
+   
+2) In gnuradio-examples/c++/Makefile.am, uncomment the SUBDIRS line
+
+# SUBDIRS = dial_tone
+
+Then, from the top-level directory, re-run ./bootstrap and ./configure.
+\ No newline at end of file
diff --git a/gnuradio-examples/c++/dial_tone/dial_tone.cc b/gnuradio-examples/c++/dial_tone/dial_tone.cc
index f87b5e60d..296cfcc11 100644
--- a/gnuradio-examples/c++/dial_tone/dial_tone.cc
+++ b/gnuradio-examples/c++/dial_tone/dial_tone.cc
@@ -32,9 +32,7 @@ dial_tone_sptr make_dial_tone()
 
 // Hierarchical block constructor, with no inputs or outputs
 dial_tone::dial_tone() : 
-gr_hier_block2("dial_tone",
-	       gr_make_io_signature(0,0,0),
-	       gr_make_io_signature(0,0,0))
+    gr_top_block("dial_tone")
 {
     gr_sig_source_f_sptr src0 = gr_make_sig_source_f(48000, GR_SIN_WAVE, 350, 0.1);
     gr_sig_source_f_sptr src1 = gr_make_sig_source_f(48000, GR_SIN_WAVE, 440, 0.1);
diff --git a/gnuradio-examples/c++/dial_tone/dial_tone.h b/gnuradio-examples/c++/dial_tone/dial_tone.h
index 793f65b4c..c645439bb 100644
--- a/gnuradio-examples/c++/dial_tone/dial_tone.h
+++ b/gnuradio-examples/c++/dial_tone/dial_tone.h
@@ -19,13 +19,13 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#include <gr_hier_block2.h>
+#include <gr_top_block.h>
 
 class dial_tone;
 typedef boost::shared_ptr<dial_tone> dial_tone_sptr;
 dial_tone_sptr make_dial_tone();
 
-class dial_tone : public gr_hier_block2
+class dial_tone : public gr_top_block
 {
 private:
     dial_tone();
diff --git a/gnuradio-examples/c++/dial_tone/main.cc b/gnuradio-examples/c++/dial_tone/main.cc
index 684b8efd3..a09bd8288 100644
--- a/gnuradio-examples/c++/dial_tone/main.cc
+++ b/gnuradio-examples/c++/dial_tone/main.cc
@@ -26,13 +26,10 @@
 // Tell the runtime to go...
 
 #include <dial_tone.h>
-#include <gr_runtime.h>
 
 int main()
 {
     dial_tone_sptr top_block = make_dial_tone();
-    gr_runtime_sptr runtime = gr_make_runtime(top_block);
-
-    runtime->run();   
+    top_block->run();   
     return 0;
 }