diff --git a/OnDemandUpdatePTU.pro b/OnDemandUpdatePTU.pro
index 233468c..e253043 100644
--- a/OnDemandUpdatePTU.pro
+++ b/OnDemandUpdatePTU.pro
@@ -44,6 +44,8 @@ contains( CONFIG, PTU5 ) {
 }
 contains( CONFIG, PTU5_YOCTO ) {
     greaterThan(QT_MAJOR_VERSION, 4): QT += serialport
+    QMAKE_CXXFLAGS += -std=c++17   # for GCC >= 4.7
+    QMAKE_CXXFLAGS += -Wno-deprecated-copy
     PTU5BASEPATH = /opt/devel/ptu5
     ARCH = PTU5
     DEFINES+=PTU5