[libcalamares] Make it possible to get the logfile name

src/libcalamares/utils/Logger.cpp

@@ -116,7 +116,7 @@ CalamaresLogHandler( QtMsgType type, const QMessageLogContext& context, const QS
 }
 
 
-static QString
+QString
 logFile()
 {
     return CalamaresUtils::appLogDir().filePath( "session.log" );

src/libcalamares/utils/Logger.h

@@ -64,6 +64,11 @@ namespace Logger
         virtual ~CDebug();
     };
 
+    /**
+     * @brief The full path of the log file.
+     */
+    DLLEXPORT QString logFile();
+
     /**
      * @brief Start logging to the log file.
      *