diff -up spamprobe-1.4d/src/database/HashDataFile.h.compile-fixes spamprobe-1.4d/src/database/HashDataFile.h
--- spamprobe-1.4d/src/database/HashDataFile.h.compile-fixes	2006-11-16 23:24:48.000000000 -0800
+++ spamprobe-1.4d/src/database/HashDataFile.h	2012-08-13 01:12:35.000000000 -0700
@@ -93,7 +93,7 @@ public:
 
   bool isReadOnly() const
   {
-    m_isReadOnly;
+    return m_isReadOnly;
   }
 
   int createMode() const
diff -up spamprobe-1.4d/src/includes/MultiLineSubString.h.compile-fixes spamprobe-1.4d/src/includes/MultiLineSubString.h
--- spamprobe-1.4d/src/includes/MultiLineSubString.h.compile-fixes	2006-11-16 23:24:48.000000000 -0800
+++ spamprobe-1.4d/src/includes/MultiLineSubString.h	2012-08-13 01:12:35.000000000 -0700
@@ -31,6 +31,7 @@
 #ifndef _MultiLineSubString_h
 #define _MultiLineSubString_h
 
+#include <limits.h>
 #include "AbstractMultiLineString.h"
 
 class MultiLineSubString : public AbstractMultiLineString
diff -up spamprobe-1.4d/src/includes/Ref.h.compile-fixes spamprobe-1.4d/src/includes/Ref.h
--- spamprobe-1.4d/src/includes/Ref.h.compile-fixes	2006-11-16 23:24:48.000000000 -0800
+++ spamprobe-1.4d/src/includes/Ref.h	2012-08-13 01:19:29.000000000 -0700
@@ -189,7 +189,7 @@ public:
 
   CRef<T> &operator=(const CRef<T> &other)
   {
-    assign(other);
+    this->assign(other);
     return *this;
   }
 
@@ -245,7 +245,7 @@ public:
 
   Ref<T> &operator=(const Ref<T> &other)
   {
-    assign(other);
+    this->assign(other);
     return *this;
   }
 
diff -up spamprobe-1.4d/src/includes/util.h.compile-fixes spamprobe-1.4d/src/includes/util.h
--- spamprobe-1.4d/src/includes/util.h.compile-fixes	2006-11-16 23:24:49.000000000 -0800
+++ spamprobe-1.4d/src/includes/util.h	2012-08-13 01:12:35.000000000 -0700
@@ -35,9 +35,10 @@
     #include <unistd.h>
 #endif
 
+#include <stdlib.h>
+#include <string.h>
 #include <cmath>
 #include <memory>
-#include <string>
 #include <cctype>
 #include <cassert>
 #include <iostream>
diff --git a/src/includes/LRUCache.h b/src/includes/LRUCache.h
index cf7df30..5c84c5a 100644
--- a/src/includes/LRUCache.h
+++ b/src/includes/LRUCache.h
@@ -60,7 +60,7 @@ public:
   {
   public:
     bool operator()(const NodeType *a,
-                    const NodeType *b)
+                    const NodeType *b) const
     {
       return a->key < b->key;
     }
@@ -77,12 +77,12 @@ public:
     }
 
   public:
-    bool operator==(const iterator &other)
+    bool operator==(const iterator &other) const
     {
       return m_iterator == other.m_iterator;
     }
 
-    bool operator!=(const iterator &other)
+    bool operator!=(const iterator &other) const
     {
       return m_iterator != other.m_iterator;
     }