Support build without Qt session manager

Rather than abort the build, don't create a session config
and print a warning.

Signed-off-by: Eike Hein <eike.hein@mbition.io>

2 files changed, 8 insertions, 2 deletions

diff --git a/src/gui/kconfiggui.cpp b/src/gui/kconfiggui.cpp
index cafe061d..f8132f9e 100644
--- a/src/gui/kconfiggui.cpp
+++ b/src/gui/kconfiggui.cpp
@@ -6,6 +6,7 @@
 */
 
 #include "kconfiggui.h"
+#include "kconfig_gui_log_settings.h"
 
 #include <QGuiApplication>
 
@@ -21,13 +22,14 @@ static KConfig *s_sessionConfig = nullptr;
 KConfig *KConfigGui::sessionConfig()
 {
 #ifdef QT_NO_SESSIONMANAGER
-#error QT_NO_SESSIONMANAGER was set, this will not compile. Reconfigure Qt with Session management support.
-#endif
+    qCWarning(KCONFIG_GUI_LOG) << "Qt is built without session manager support";
+#else
     if (!hasSessionConfig() && qApp->isSessionRestored()) {
         // create the default instance specific config object
         // from applications' -session command line parameter
         s_sessionConfig = new KConfig(configName(qApp->sessionId(), qApp->sessionKey()), KConfig::SimpleConfig);
     }
+#endif
 
     return s_sessionConfig;
 }
diff --git a/src/gui/kconfiggui.h b/src/gui/kconfiggui.h
index 8f4b739a..33082d83 100644
--- a/src/gui/kconfiggui.h
+++ b/src/gui/kconfiggui.h
@@ -22,6 +22,10 @@ namespace KConfigGui
 /**
  * Returns the current application session config object.
  *
+ * @note If Qt is built without session manager support,
+ * this by default will return nullptr, unless a custom config
+ * has been set via @c setSessionConfig.
+ *
  * @return A pointer to the application's instance specific
  * KConfig object.
  * @see KConfig