It seems that Qt::TextToSpeech will not be port to qt6 (or we need to

duplicate qt5 source, we will see it in qt6 time)

CMakeLists.txt

@@ -97,7 +97,15 @@ set_package_properties(Qca-qt5 PROPERTIES DESCRIPTION "Qt Cryptographic Architec
                    PURPOSE "Needed for ews resource.")
 option(KDEPIM_RUN_AKONADI_TEST "Enable autotest based on Akonadi." TRUE)
 # QT5 package
-find_package(Qt5 ${QT_REQUIRED_VERSION} CONFIG REQUIRED TextToSpeech Network Widgets Test XmlPatterns DBus WebEngineWidgets NetworkAuth)
+find_package(Qt5TextToSpeech ${QT_REQUIRED_VERSION} CONFIG)
+set_package_properties(Qt5TextToSpeech PROPERTIES DESCRIPTION
+    "Add support for texttospeed"
+    TYPE OPTIONAL
+)
+if(Qt5TextToSpeech_FOUND)
+set(HAVE_TEXT_TO_SPEECH_SUPPORT TRUE)
+endif()
+find_package(Qt5 ${QT_REQUIRED_VERSION} CONFIG REQUIRED Network Widgets Test XmlPatterns DBus WebEngineWidgets NetworkAuth)
 
 
 # KF5 package

agents/newmailnotifier/CMakeLists.txt

 
 include_directories(${kdepim-runtime_BINARY_DIR})
 add_definitions(-DTRANSLATION_DOMAIN=\"akonadi_newmailnotifier_agent\")
-
+configure_file(config-newmailnotifier.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-newmailnotifier.h)
 
 add_executable( akonadi_newmailnotifier_agent)
 set(newmailnotifier_common_SRCS)
@@ -45,6 +45,12 @@ target_link_libraries( akonadi_newmailnotifier_agent
   Qt::TextToSpeech
 )
 
+if(Qt5TextToSpeech_FOUND)
+    target_link_libraries( akonadi_newmailnotifier_agent
+      Qt::TextToSpeech
+    )
+endif()
+
 if( APPLE )
   set_target_properties( akonadi_newmailnotifier_agent PROPERTIES MACOSX_BUNDLE_INFO_PLIST ${CMAKE_SOURCE_DIR}/Info.plist.template)
   set_target_properties( akonadi_newmailnotifier_agent PROPERTIES MACOSX_BUNDLE_GUI_IDENTIFIER "org.kde.Akonadi.newmailnotifier")

agents/newmailnotifier/config-newmailnotifier.h.cmake

+/*
+   SPDX-FileCopyrightText: 2021 Laurent Montel <montel@kde.org>
+
+   SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
+#pragma once	
+#cmakedefine01 HAVE_TEXT_TO_SPEECH_SUPPORT

agents/newmailnotifier/newmailnotifieragent.cpp

@@ -36,7 +36,9 @@
 #if KCOREADDONS_VERSION < QT_VERSION_CHECK(6, 0, 0)
 #include <Kdelibs4ConfigMigrator>
 #endif
+#if HAVE_TEXT_TO_SPEECH_SUPPORT
 #include <QTextToSpeech>
+#endif
 
 using namespace Akonadi;
 
@@ -344,7 +346,9 @@ void NewMailNotifierAgent::slotShowNotifications()
             auto job = new SpecialNotifierJob(mListEmails, currentPath, item, this);
             job->setDefaultIconName(mDefaultIconName);
             connect(job, &SpecialNotifierJob::displayNotification, this, &NewMailNotifierAgent::slotDisplayNotification);
+#if HAVE_TEXT_TO_SPEECH_SUPPORT
             connect(job, &SpecialNotifierJob::say, this, &NewMailNotifierAgent::slotSay);
+#endif
             mNewMails.clear();
             return;
         } else {
@@ -463,6 +467,7 @@ bool NewMailNotifierAgent::isActive() const
 
 void NewMailNotifierAgent::slotSay(const QString &message)
 {
+#if HAVE_TEXT_TO_SPEECH_SUPPORT
     if (!mTextToSpeech) {
         mTextToSpeech = new QTextToSpeech(this);
     }
@@ -471,6 +476,7 @@ void NewMailNotifierAgent::slotSay(const QString &message)
     } else {
         mTextToSpeech->say(message);
     }
+#endif
 }
 
 AKONADI_AGENT_MAIN(NewMailNotifierAgent)

agents/newmailnotifier/newmailnotifieragent.h

@@ -7,7 +7,7 @@
 */
 
 #pragma once
-
+#include "config-newmailnotifier.h"
 #include <agentbase.h>
 #include <collection.h> // make sure this is included before QHash, otherwise it won't find the correct qHash implementation for some reason
 
@@ -67,6 +67,8 @@ private:
     QTimer mTimer;
     QStringList mInstanceNameInProgress;
     KIdentityManagement::IdentityManager *mIdentityManager = nullptr;
+#if HAVE_TEXT_TO_SPEECH_SUPPORT
     QTextToSpeech *mTextToSpeech = nullptr;
+#endif
 };
 

agents/newmailnotifier/newmailnotifiersettingswidget.cpp

@@ -102,7 +102,7 @@ NewMailNotifierSettingsWidget::NewMailNotifierSettingsWidget(const KSharedConfig
 
     vbox->addStretch();
     tab->addTab(settings, i18n("Display"));
-
+#if HAVE_TEXT_TO_SPEECH_SUPPORT
     auto textSpeakWidget = new QWidget;
     vbox = new QVBoxLayout;
     textSpeakWidget->setLayout(vbox);
@@ -131,7 +131,7 @@ NewMailNotifierSettingsWidget::NewMailNotifierSettingsWidget(const KSharedConfig
     vbox->addStretch();
     tab->addTab(textSpeakWidget, i18n("Text to Speak"));
     connect(mTextToSpeak, &QCheckBox::toggled, mTextToSpeakSetting, &QLineEdit::setEnabled);
-
+#endif
     mNotify = new KNotifyConfigWidget(parent);
     mNotify->setObjectName(QStringLiteral("mNotify"));
     mNotify->setApplication(QStringLiteral("akonadi_newmailnotifier_agent"));
@@ -180,8 +180,10 @@ void NewMailNotifierSettingsWidget::load()
     mAllowToShowMail->setChecked(settings->showButtonToDisplayMail());
     mKeepPersistentNotification->setChecked(settings->keepPersistentNotification());
     mTextToSpeak->setChecked(settings->textToSpeakEnabled());
+#if HAVE_TEXT_TO_SPEECH_SUPPORT
     mTextToSpeakSetting->setEnabled(mTextToSpeak->isChecked());
     mTextToSpeakSetting->setText(settings->textToSpeak());
+#endif
     mReplyMail->setChecked(settings->replyMail());
     mReplyMailTypeComboBox->setCurrentIndex(settings->replyMailType());
 
@@ -199,8 +201,10 @@ bool NewMailNotifierSettingsWidget::save() const
     settings->setExcludeEmailsFromMe(mExcludeMySelf->isChecked());
     settings->setShowButtonToDisplayMail(mAllowToShowMail->isChecked());
     settings->setKeepPersistentNotification(mKeepPersistentNotification->isChecked());
+#if HAVE_TEXT_TO_SPEECH_SUPPORT
     settings->setTextToSpeakEnabled(mTextToSpeak->isChecked());
     settings->setTextToSpeak(mTextToSpeakSetting->text());
+#endif
     settings->setReplyMail(mReplyMail->isChecked());
     settings->setReplyMailType(mReplyMailTypeComboBox->currentIndex());
     settings->save();

agents/newmailnotifier/newmailnotifiersettingswidget.h

@@ -5,7 +5,7 @@
 */
 
 #pragma once
-
+#include "config-newmailnotifier.h"
 #include <AkonadiCore/AgentConfigurationBase>
 #include <AkonadiCore/Collection>
 
@@ -35,8 +35,10 @@ private:
     QCheckBox *mAllowToShowMail = nullptr;
     QCheckBox *mKeepPersistentNotification = nullptr;
     KNotifyConfigWidget *mNotify = nullptr;
+#if HAVE_TEXT_TO_SPEECH_SUPPORT
     QCheckBox *mTextToSpeak = nullptr;
     QLineEdit *mTextToSpeakSetting = nullptr;
+#endif
     QCheckBox *mReplyMail = nullptr;
     QComboBox *mReplyMailTypeComboBox = nullptr;
     NewMailNotifierSelectCollectionWidget *mSelectCollection = nullptr;