From 0510f6ffee646171bb105e0e8d016ac35e606cd4 Mon Sep 17 00:00:00 2001
From: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Date: Mon, 22 Jun 2020 15:45:20 +0200
Subject: [PATCH] qualify placeholders with their full namespace

With boost >= 1.73, placeholders must be qualified by using the full namespace.

Without the namespace, the build fails with:
gqrx-2.12.1/src/dsp/rds/parser_impl.cc: In constructor 'gr::rds::parser_impl::parser_impl(bool, bool)':
gqrx-2.12.1/src/dsp/rds/parser_impl.cc:42:72: error: '_1' was not declared in this scope
set_msg_handler(pmt::mp("in"), boost::bind(&parser_impl::parse, this, _1));

[Upstream status: https://github.com/csete/gqrx/pull/811]

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
---
 src/dsp/rds/parser_impl.cc | 2 +-
 src/dsp/rx_rds.cpp         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/dsp/rds/parser_impl.cc b/src/dsp/rds/parser_impl.cc
index b10fdb01..07dae038 100644
--- a/src/dsp/rds/parser_impl.cc
+++ b/src/dsp/rds/parser_impl.cc
@@ -40,7 +40,7 @@ parser_impl::parser_impl(bool log, bool debug, unsigned char pty_locale)
 	pty_locale(pty_locale)
 {
 	message_port_register_in(pmt::mp("in"));
-	set_msg_handler(pmt::mp("in"), boost::bind(&parser_impl::parse, this, _1));
+	set_msg_handler(pmt::mp("in"), boost::bind(&parser_impl::parse, this, boost::placeholders::_1));
 	message_port_register_out(pmt::mp("out"));
 	reset();
 }
diff --git a/src/dsp/rx_rds.cpp b/src/dsp/rx_rds.cpp
index c4a541f3..c09835b0 100644
--- a/src/dsp/rx_rds.cpp
+++ b/src/dsp/rx_rds.cpp
@@ -97,7 +97,7 @@ rx_rds_store::rx_rds_store() : gr::block ("rx_rds_store",
                                 gr::io_signature::make (0, 0, 0))
 {
         message_port_register_in(pmt::mp("store"));
-        set_msg_handler(pmt::mp("store"), boost::bind(&rx_rds_store::store, this, _1));
+        set_msg_handler(pmt::mp("store"), boost::bind(&rx_rds_store::store, this, boost::placeholders::_1));
         d_messages.set_capacity(100);
 }