  
  namespace gr {
  namespace fec {
+diff --git a/gr-fec/include/gnuradio/fec/ldpc_H_matrix.h b/gr-fec/include/gnuradio/fec/ldpc_H_matrix.h
+index 9a3628a52..b4c793f82 100644
+--- a/gr-fec/include/gnuradio/fec/ldpc_H_matrix.h
++++ b/gr-fec/include/gnuradio/fec/ldpc_H_matrix.h
+@@ -12,6 +12,7 @@
+ #include <gnuradio/fec/api.h>
+ #include <gnuradio/fec/fec_mtrx.h>
+ #include <memory>
++#include <string>
+ 
+ namespace gr {
+ namespace fec {
 diff --git a/gr-fec/lib/polar_common.cc b/gr-fec/lib/polar_common.cc
 index 6df894766..1b2a13137 100644
 --- a/gr-fec/lib/polar_common.cc

From 3d48d0df8de208dd106c6e5a34d80c5b77e1c308 Mon Sep 17 00:00:00 2001
From: Ryan Volz <ryan.volz@gmail.com>
Date: Tue, 15 Sep 2020 13:44:19 -0400
Subject: [PATCH] lib, include: Include missing headers.

 #include <cmath>
 #include <iostream>
 #include <stdexcept>
diff --git a/gr-fec/python/fec/bindings/fec_mtrx_python.cc b/gr-fec/python/fec/bindings/fec_mtrx_python.cc
index b7a7a6b7c..eb2d04093 100644
--- a/gr-fec/python/fec/bindings/fec_mtrx_python.cc
+++ b/gr-fec/python/fec/bindings/fec_mtrx_python.cc
@@ -14,7 +14,7 @@
 /* BINDTOOL_GEN_AUTOMATIC(0)                                                       */
 /* BINDTOOL_USE_PYGCCXML(0)                                                        */
 /* BINDTOOL_HEADER_FILE(fec_mtrx.h)                                        */
-/* BINDTOOL_HEADER_FILE_HASH(80c2f34bc9bdb9ac03abdf0c26b3d024)                     */
+/* BINDTOOL_HEADER_FILE_HASH(27f3285cd440f36bd0cb37fb3371c395)                     */
 /***********************************************************************************/
 
 #include <pybind11/complex.h>
diff --git a/gr-fec/python/fec/bindings/ldpc_G_matrix_python.cc b/gr-fec/python/fec/bindings/ldpc_G_matrix_python.cc
index edda371cd..9fd266dce 100644
--- a/gr-fec/python/fec/bindings/ldpc_G_matrix_python.cc
+++ b/gr-fec/python/fec/bindings/ldpc_G_matrix_python.cc
@@ -14,7 +14,7 @@
 /* BINDTOOL_GEN_AUTOMATIC(0)                                                       */
 /* BINDTOOL_USE_PYGCCXML(0)                                                        */
 /* BINDTOOL_HEADER_FILE(ldpc_G_matrix.h)                                        */
-/* BINDTOOL_HEADER_FILE_HASH(e7cba655800bc51dc4ee066fbd16f621)                     */
+/* BINDTOOL_HEADER_FILE_HASH(bf2a99993f1ad2c3e1ebbe9d6d29a507)                     */
 /***********************************************************************************/
 
 #include <pybind11/complex.h>
diff --git a/gr-fec/python/fec/bindings/ldpc_H_matrix_python.cc b/gr-fec/python/fec/bindings/ldpc_H_matrix_python.cc
index 7c57b980c..7df602be3 100644
--- a/gr-fec/python/fec/bindings/ldpc_H_matrix_python.cc
+++ b/gr-fec/python/fec/bindings/ldpc_H_matrix_python.cc
@@ -14,7 +14,7 @@
 /* BINDTOOL_GEN_AUTOMATIC(0)                                                       */
 /* BINDTOOL_USE_PYGCCXML(0)                                                        */
 /* BINDTOOL_HEADER_FILE(ldpc_H_matrix.h)                                        */
-/* BINDTOOL_HEADER_FILE_HASH(68956287d34e6a1208c0d84fda0d8af4)                     */
+/* BINDTOOL_HEADER_FILE_HASH(aeff2a97ade352d218316adfe97a4b6d)                     */
 /***********************************************************************************/
 
 #include <pybind11/complex.h>
-- 
2.20.1

