Make it compile

src/CMakeLists.txt

@@ -7,7 +7,9 @@ add_subdirectory(kconf_update)
 set(libimportwizard_SRCS
     importwizard.cpp
     importwizardkernel.cpp
+    importmailpluginmanager.cpp
     )
+
 set(libimportwizard_manual_SRCS
     manual/manualimportmailpage.cpp
     manual/importwizardfilterinfogui.cpp

src/importmailpluginmanager.cpp

@@ -20,6 +20,8 @@
 
 #include "importmailpluginmanager.h"
 
+Q_GLOBAL_STATIC(ImportMailPluginManager, s_pImportMailPluginManagerSelf)
+
 ImportMailPluginManager::ImportMailPluginManager(QObject *parent)
     : QObject(parent)
 {
@@ -30,3 +32,8 @@ ImportMailPluginManager::~ImportMailPluginManager()
 {
 
 }
+
+ImportMailPluginManager *ImportMailPluginManager::self()
+{
+    return s_pImportMailPluginManagerSelf;
+}

src/importmailpluginmanager.h

@@ -27,6 +27,9 @@ class ImportMailPluginManager : public QObject
 public:
     explicit ImportMailPluginManager(QObject *parent = nullptr);
     ~ImportMailPluginManager();
+
+    static ImportMailPluginManager *self();
+
 };
 
 #endif // IMPORTMAILPLUGINMANAGER_H