diff -ruNp tora-2.1.3-orig/src/toextract.cpp tora-2.1.3/src/toextract.cpp
--- tora-2.1.3-orig/src/toextract.cpp	2010-02-02 12:25:43.000000000 -0600
+++ tora-2.1.3/src/toextract.cpp	2014-08-16 20:03:11.000000000 -0500
@@ -45,6 +45,10 @@
 #include "toconnection.h"
 #include "toextract.h"
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 #include <stdio.h>
 
 #include <qapplication.h>
--- a/src/toextract.h	2010-02-02 13:25:43.000000000 -0500
+++ b/src/toextract.h	2015-03-08 20:14:45.000000000 -0400
@@ -783,5 +783,5 @@
         /** Implement sort order based only on Order field.
          */
-        bool operator <(const columnInfo &inf)
+        bool operator <(const columnInfo &inf) const
         {
             return Order < inf.Order;
@@ -789,5 +789,5 @@
         /** Implement sort order based only on Order field.
          */
-        bool operator ==(const columnInfo &inf)
+        bool operator ==(const columnInfo &inf) const
         {
             return Order == inf.Order;
--- a/src/toreport.cpp	2010-01-14 10:39:02.000000000 -0600
+++ b/src/toreport.cpp	2015-03-08 21:15:09.000000000 -0500
@@ -47,6 +47,10 @@
 #include "toextract.h"
 #include "toreport.h"
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 #include <qapplication.h>
 #include <qdatetime.h>
 #ifdef Q_OS_WIN32