Make it compile with strict compile flags

CMakeLists.txt

 cmake_minimum_required(VERSION 2.8.12)
 project(kteatime)
 
-find_package(ECM 1.3.0 REQUIRED NO_MODULE)
+set(QT_MIN_VERSION "5.9.0")
+set(KF5_VERSION "5.46.0")
+
+
+find_package(ECM ${KF5_VERSION} REQUIRED NO_MODULE)
 set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH} ${ECM_KDE_MODULE_DIR})
 include(ECMInstallIcons)
 
 # Search KDE installation
-find_package(Qt5 5.2.0 CONFIG REQUIRED
+find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED
   Core
   Widgets
 )
 
-find_package(KF5 5.23.0 REQUIRED
+find_package(KF5 ${KF5_VERSION} REQUIRED
   Config
   Crash
   DocTools
@@ -25,15 +29,10 @@ find_package(KF5 5.23.0 REQUIRED
 
 include(KDEInstallDirs)
 include(KDECMakeSettings)
-include(KDECompilerSettings NO_POLICY_SCOPE)
+include(KDEFrameworkCompilerSettings NO_POLICY_SCOPE)
 include(FeatureSummary)
 
-add_definitions( -DQT_NO_CAST_FROM_ASCII )
-add_definitions( -DQT_NO_CAST_TO_ASCII )
-add_definitions(-DQT_USE_FAST_OPERATOR_PLUS)
 add_definitions(-DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT)
-add_definitions(-DQT_NO_URL_CAST_FROM_STRING)
-add_definitions(-DQT_USE_QSTRINGBUILDER)
 
 ADD_SUBDIRECTORY(doc)
 ADD_SUBDIRECTORY(data)

src/tealistmodel.h

@@ -46,7 +46,7 @@ class TeaListModel : public QAbstractTableModel
          *
          * @return @ref QModelIndex with the index of the item.
          */
-        QModelIndex index(int row, int column, const QModelIndex & parent = QModelIndex()) const;
+        QModelIndex index(int row, int column, const QModelIndex & parent = QModelIndex()) const override;
 
         /**
          * Returns the number of rows.
@@ -54,7 +54,7 @@ class TeaListModel : public QAbstractTableModel
          *
          * @return the number of rows.
          */
-        int rowCount(const QModelIndex &parent = QModelIndex()) const;
+        int rowCount(const QModelIndex &parent = QModelIndex()) const override;
 
         /**
          * Returns the number of columns.
@@ -62,7 +62,7 @@ class TeaListModel : public QAbstractTableModel
          *
          * @return the number of columns.
          */
-        int columnCount(const QModelIndex &parent = QModelIndex()) const;
+        int columnCount(const QModelIndex &parent = QModelIndex()) const override;
 
         /**
          * Returns the data stored under the given role for the item referred to by the index.
@@ -71,7 +71,7 @@ class TeaListModel : public QAbstractTableModel
          *
          * @return the specified data.
          */
-        QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+        QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
 
         /**
          * Sets the role data for the item at index to value.
@@ -81,7 +81,7 @@ class TeaListModel : public QAbstractTableModel
          *
          * @return if successful true, otherwise false.
          */
-        bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+        bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
 
         /**
          * Returns the data for the given role and section in the header with the specified orientation.
@@ -91,7 +91,7 @@ class TeaListModel : public QAbstractTableModel
          *
          * @return the specified data.
          */
-        QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
+        QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
 
         /**
          * inserts rows into the model before the given one.
@@ -102,7 +102,7 @@ class TeaListModel : public QAbstractTableModel
          *
          * @return true if the rows were successfully inserted, otherwise false.
          */
-        bool insertRows(int row, int count, const QModelIndex &parent = QModelIndex());
+        bool insertRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;
 
         /**
          * removes rows from the model, starting with the given row.
@@ -112,7 +112,7 @@ class TeaListModel : public QAbstractTableModel
          *
          * @return true if the rows were successfully removed, otherwise false.
          */
-        bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex());
+        bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;
 
         /**
          * Returns the whole list of teas.