From 6d0593a26b1c4265a0f73a833d248c11a901fa79 Mon Sep 17 00:00:00 2001
From: xiphon <xiphon@protonmail.com>
Date: Mon, 23 Dec 2019 11:52:50 +0000
Subject: [PATCH] build: fix build on Ubuntu 16.04 GCC 5.4 (missing includes)

---
 src/libwalletqt/Subaddress.h         | 2 ++
 src/libwalletqt/SubaddressAccount.h  | 2 ++
 src/libwalletqt/TransactionHistory.h | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/src/libwalletqt/Subaddress.h b/src/libwalletqt/Subaddress.h
index 190fdecb..34d9152f 100644
--- a/src/libwalletqt/Subaddress.h
+++ b/src/libwalletqt/Subaddress.h
@@ -29,6 +29,8 @@
 #ifndef SUBADDRESS_H
 #define SUBADDRESS_H
 
+#include <functional>
+
 #include <wallet/api/wallet2_api.h>
 #include <QReadWriteLock>
 #include <QObject>
diff --git a/src/libwalletqt/SubaddressAccount.h b/src/libwalletqt/SubaddressAccount.h
index 2cdaf317..67aa4d3c 100644
--- a/src/libwalletqt/SubaddressAccount.h
+++ b/src/libwalletqt/SubaddressAccount.h
@@ -29,6 +29,8 @@
 #ifndef SUBADDRESSACCOUNT_H
 #define SUBADDRESSACCOUNT_H
 
+#include <functional>
+
 #include <wallet/api/wallet2_api.h>
 #include <QObject>
 #include <QReadWriteLock>
diff --git a/src/libwalletqt/TransactionHistory.h b/src/libwalletqt/TransactionHistory.h
index 689cf39f..cf364782 100644
--- a/src/libwalletqt/TransactionHistory.h
+++ b/src/libwalletqt/TransactionHistory.h
@@ -29,6 +29,8 @@
 #ifndef TRANSACTIONHISTORY_H
 #define TRANSACTIONHISTORY_H
 
+#include <functional>
+
 #include <QObject>
 #include <QList>
 #include <QReadWriteLock>