Fix some qt6 compile error

src/akonadicontrol/main.cpp

@@ -24,7 +24,7 @@
 #include <QSessionManager>
 
 #include <KAboutData>
-#include <KCrash/KCrash>
+#include <KCrash>
 
 #include <stdlib.h>
 #ifdef HAVE_UNISTD_H
@@ -70,9 +70,9 @@ int main(int argc, char **argv)
     AccountsIntegration accountsIntegration(agentManager);
 #endif
     KCrash::setEmergencySaveFunction(crashHandler);
-
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     QGuiApplication::setFallbackSessionManagementEnabled(false);
-
+#endif
     // akonadi_control is started on-demand, no need to auto restart by session.
     auto disableSessionManagement = [](QSessionManager &sm) {
         sm.setRestartHint(QSessionManager::RestartNever);

src/core/typepluginloader_p.h

@@ -12,7 +12,12 @@
 
 class QObject;
 class QString;
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 template<typename T> class QVector;
+#else
+template<typename T>
+class QList;
+#endif
 
 namespace Akonadi
 {

src/server/storage/entities.xsl

@@ -32,10 +32,14 @@
 #include <QtCore/QSharedDataPointer>
 #include <QtCore/QString>
 #include <QtCore/QVariant>
-
+#include <QtCore/QStringList>
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 template <typename T> class QVector;
+#else
+template <typename T> class QList;
+#endif
+
 class QSqlQuery;
-class QStringList;
 
 namespace Akonadi {
 namespace Server {

src/shared/akdebug.cpp

@@ -19,7 +19,7 @@
 #include <QLoggingCategory>
 #include <QMutex>
 
-#include <KCrash/KCrash>
+#include <KCrash>
 
 #include <cassert>
 
@@ -195,7 +195,8 @@ void akMessageHandler(QtMsgType type, const QMessageLogContext &context, const Q
 
 void akCategoryFilter(QLoggingCategory *category)
 {
-    if ((qstrcmp(category->categoryName(), sInstance()->loggingCategory) == 0) || (qstrcmp(category->categoryName(), "org.kde.pim.akonadiprivate") == 0)) {
+    if ((qstrcmp(category->categoryName(), sInstance()->loggingCategory.constData()) == 0)
+        || (qstrcmp(category->categoryName(), "org.kde.pim.akonadiprivate") == 0)) {
         category->setEnabled(QtDebugMsg, true);
         category->setEnabled(QtInfoMsg, true);
         category->setEnabled(QtWarningMsg, true);