Begin adding Android builds

CMakeLists.txt

@@ -602,6 +602,8 @@ elseif (WIN32)
 		EXPECTED_HASH SHA256=b4481023c5782733795838be22bf1a75f45d87458cd4d9a5a75f664a146eea11)
 
 	set(SRC_FILES ${SRC_FILES} src/notifications/ManagerWin.cpp src/wintoastlib.cpp)
+elseif(ANDROID)
+    #set(SRC_FILES ${SRC_FILES} src/notifications/ManagerAndroid.cpp) # does nothing ATM
 else ()
 	set(SRC_FILES ${SRC_FILES} src/notifications/ManagerLinux.cpp)
 endif ()
@@ -620,6 +622,8 @@ endif()
 if(WIN32)
 	add_executable (nheko WIN32 ${OS_BUNDLE} ${NHEKO_DEPS})
 	target_compile_definitions(nheko PRIVATE _WIN32_WINNT=0x0601)
+elseif(ANDROID)
+    add_library (nheko SHARED ${NHEKO_DEPS})
 else()
 	add_executable (nheko ${OS_BUNDLE} ${NHEKO_DEPS})
 
@@ -636,6 +640,8 @@ elseif(WIN32)
 	if(MSVC)
 		target_compile_options(nheko PUBLIC "/Zc:__cplusplus")
 	endif()
+elseif(ANDROID)
+    # link with nothing at all
 else()
 	target_link_libraries (nheko PRIVATE Qt5::DBus)
 endif()

src/notifications/Manager.h

@@ -15,6 +15,10 @@
 #define NHEKO_DBUS_SYS
 #endif
 
+#ifdef Q_OS_ANDROID
+#undef NHEKO_DBUS_SYS
+#endif
+
 #if defined(NHEKO_DBUS_SYS)
 #include <QtDBus/QDBusArgument>
 #include <QtDBus/QDBusInterface>

src/notifications/ManagerAndroid.cpp

@@ -0,0 +1,48 @@
+// SPDX-FileCopyrightText: 2012 Roland Hieber <rohieb@rohieb.name>
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "notifications/Manager.h"
+
+#include <functional>
+#include <variant>
+
+#include <mtx/responses/notifications.hpp>
+
+#include "Cache.h"
+#include "EventAccessors.h"
+#include "MxcImageProvider.h"
+#include "Utils.h"
+
+NotificationsManager::NotificationsManager(QObject *parent)
+  : QObject(parent)
+{
+}
+
+void
+NotificationsManager::postNotification(const mtx::responses::Notification &notification,
+                                       const QImage &icon)
+{
+}
+
+void
+NotificationsManager::removeNotification(const QString &roomId, const QString &eventId)
+{
+}
+
+void
+NotificationsManager::actionInvoked(uint id, QString action)
+{
+}
+
+void
+NotificationsManager::notificationReplied(uint id, QString reply)
+{
+}
+
+void
+NotificationsManager::notificationClosed(uint id, uint reason)
+{
+}
+