synx_qt5_build_issues - see https://wiki.qt.io/Transition_from_Qt_4.x_to_Qt5

addressbookpage.patch

diff --git a/src/qt/addressbookpage.cpp b/src/qt/addressbookpage.cpp
index 36193fe..5468058 100644
--- a/src/qt/addressbookpage.cpp
+++ b/src/qt/addressbookpage.cpp
@@ -135,7 +135,7 @@ void AddressBookPage::setModel(AddressTableModel *model)
     // Set column widths
     ui->tableView->horizontalHeader()->resizeSection(
             AddressTableModel::Address, 320);
-    ui->tableView->horizontalHeader()->setResizeMode(
+    ui->tableView->horizontalHeader()->setSectionResizeMode(
             AddressTableModel::Label, QHeaderView::Stretch);
 
     connect(ui->tableView->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)),

sendmessagesdialog.patch

diff --git a/src/qt/sendmessagesdialog.cpp b/src/qt/sendmessagesdialog.cpp
index 1d83368..4ee4b62 100644
--- a/src/qt/sendmessagesdialog.cpp
+++ b/src/qt/sendmessagesdialog.cpp
@@ -155,7 +155,7 @@ void SendMessagesDialog::on_sendButton_clicked()
     QStringList formatted;
     foreach(const SendMessagesRecipient &rcp, recipients)
     {
-        formatted.append(tr("<b>%1</b> to %2 (%3)").arg(rcp.message, Qt::escape(rcp.label), rcp.address));
+        formatted.append(tr("<b>%1</b> to %2 (%3)").arg(rcp.message, QString(rcp.label).toHtmlEscaped(), rcp.address));
     }