Now it depends against new version. Old code can be removed

kbroadcastnotification/main.cpp

@@ -74,11 +74,7 @@ int main(int argc, char *argv[])
     }
 
     if (parser.isSet(uidsOption)) {
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
-        const QStringList &uids = parser.value(uidsOption).split(QLatin1Char(','), QString::SkipEmptyParts);
-#else
         const QStringList &uids = parser.value(uidsOption).split(QLatin1Char(','), Qt::SkipEmptyParts);
-#endif
         if (!uids.isEmpty()) {
             properties.insert(QStringLiteral("uids"), uids);
         }

kdesu/sudlg.cpp

@@ -5,7 +5,6 @@
  */
 
 #include "sudlg.h"
-#include <kwidgetsaddons_version.h>
 #include <QByteArray>
 
 #include <KLocalizedString>
@@ -16,11 +15,7 @@ KDEsuDialog::KDEsuDialog(QByteArray user, QByteArray authUser, bool enableKeep,
     : KPasswordDialog(nullptr, enableKeep ? ShowKeepPassword : NoFlags)
 {
     if ( !icon.isEmpty() ) {
-#if KWIDGETSADDONS_VERSION >= QT_VERSION_CHECK(5,63,0)
         setIcon(QIcon::fromTheme(icon));
-#else
-        setPixmap(QIcon::fromTheme(icon).pixmap(style()->pixelMetric(QStyle::PM_LargeIconSize)));
-#endif
     }
 
     if ( withIgnoreButton ) {

keditfiletype/mimetypedata.cpp

@@ -441,11 +441,7 @@ void MimeTypeData::syncServices()
 
     // Clean out any kde-mimeapps.list which would take precedence any cancel our changes.
     const QString desktops = QString::fromLocal8Bit(qgetenv("XDG_CURRENT_DESKTOP"));
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
-    foreach (const QString &desktop, desktops.split(QLatin1Char(':'), QString::SkipEmptyParts)) {
-#else
     foreach (const QString &desktop, desktops.split(QLatin1Char(':'), Qt::SkipEmptyParts)) {
-#endif
         const QString file = QStandardPaths::writableLocation(QStandardPaths::GenericConfigLocation)
                              + QLatin1Char('/') + desktop.toLower()
                              + QLatin1String("-mimeapps.list");

keditfiletype/tests/filetypestest.cpp

@@ -22,7 +22,6 @@
 #include <kconfiggroup.h>
 #include <kdesktopfile.h>
 #include <ksycoca.h>
-#include <kcoreaddons_version.h>
 
 // Qt
 #include <QProcess>
@@ -45,11 +44,7 @@ class FileTypesTest : public QObject
 private Q_SLOTS:
     void initTestCase()
     {
-#if KCOREADDONS_VERSION >= QT_VERSION_CHECK(5, 73, 0)
         QLoggingCategory::setFilterRules(QStringLiteral("kf.coreaddons.kdirwatch.debug=true"));
-#else
-        QLoggingCategory::setFilterRules(QStringLiteral("kf5.kcoreaddons.kdirwatch.debug=true"));
-#endif
 
         QStandardPaths::setTestModeEnabled(true);
 

kioclient/kioclient.cpp

@@ -211,9 +211,7 @@ bool ClientApp::kde_open(const QString& url, const QString& mimeType, bool allow
         KRun * run = new KRun( info.url, nullptr );
         run->setRunExecutables(allowExec);
 
-#if KIO_VERSION >= QT_VERSION_CHECK(5,55,0)
         run->setFollowRedirections(false);
-#endif
         QObject::connect( run, &KRun::finished, this, &ClientApp::delayedQuit);
         QObject::connect( run, &KRun::error, this, &ClientApp::delayedQuit);
         qApp->exec();