diff --git a/tools/common/DerivedLinkContext.cs b/tools/common/DerivedLinkContext.cs
new file mode 100644
index 0000000000..09856080b4
--- /dev/null
+++ b/tools/common/DerivedLinkContext.cs
@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+
+using Mono.Cecil;
+using Mono.Linker;
+
+namespace Xamarin.Tuner
+{
+	public class DerivedLinkContext : LinkContext
+	{
+		Dictionary<string, MemberReference> required_symbols;
+		List<MethodDefinition> marshal_exception_pinvokes;
+
+		public Dictionary<string, MemberReference> RequiredSymbols {
+			get {
+				if (required_symbols == null)
+					required_symbols = new Dictionary<string, MemberReference> ();
+				return required_symbols;
+			}
+		}
+
+		public List<MethodDefinition> MarshalExceptionPInvokes {
+			get {
+				if (marshal_exception_pinvokes == null)
+					marshal_exception_pinvokes = new List<MethodDefinition> ();
+				return marshal_exception_pinvokes;
+			}
+		}
+
+		public DerivedLinkContext (Pipeline pipeline, AssemblyResolver resolver)
+			: base (pipeline, resolver)
+		{
+		}
+	}
+}
diff --git a/tools/linker/MobileMarkStep.cs b/tools/linker/MobileMarkStep.cs
index c955a72981..8b247a9d95 100644
--- a/tools/linker/MobileMarkStep.cs
+++ b/tools/linker/MobileMarkStep.cs
@@ -9,12 +9,6 @@ using Mono.Linker;
 using Mono.Linker.Steps;
 using Mono.Tuner;
 
-#if MONOMAC
-using DerivedLinkContext = MonoMac.Tuner.MonoMacLinkContext;
-#else
-using DerivedLinkContext = MonoTouch.Tuner.MonoTouchLinkContext;
-#endif
-
 namespace Xamarin.Linker.Steps {
 
 	// XML definition files have their limits, i.e. they are good to keep stuff around unconditionnally
diff --git a/tools/linker/MonoTouch.Tuner/ListExportedSymbols.cs b/tools/linker/MonoTouch.Tuner/ListExportedSymbols.cs
index 2f4e0b57ea..f85579bcd4 100644
--- a/tools/linker/MonoTouch.Tuner/ListExportedSymbols.cs
+++ b/tools/linker/MonoTouch.Tuner/ListExportedSymbols.cs
@@ -8,12 +8,7 @@ using Mono.Tuner;
 
 using Xamarin.Bundler;
 using Xamarin.Linker;
-
-#if MONOMAC
-using DerivedLinkContext = MonoMac.Tuner.MonoMacLinkContext;
-#else
-using DerivedLinkContext = MonoTouch.Tuner.MonoTouchLinkContext;
-#endif
+using Xamarin.Tuner;
 
 namespace MonoTouch.Tuner
 {
diff --git a/tools/linker/MonoTouch.Tuner/ProcessExportedFields.cs b/tools/linker/MonoTouch.Tuner/ProcessExportedFields.cs
index 4b418e7d4b..189b98e490 100644
--- a/tools/linker/MonoTouch.Tuner/ProcessExportedFields.cs
+++ b/tools/linker/MonoTouch.Tuner/ProcessExportedFields.cs
@@ -7,12 +7,6 @@ using Mono.Linker.Steps;
 using Mono.Tuner;
 using Xamarin.Linker;
 
-#if MONOMAC
-using DerivedLinkContext = MonoMac.Tuner.MonoMacLinkContext;
-#else
-using DerivedLinkContext = MonoTouch.Tuner.MonoTouchLinkContext;
-#endif
-
 namespace MonoTouch.Tuner {
 	
 	//
diff --git a/tools/mmp/Makefile b/tools/mmp/Makefile
index 3ba38e3ff4..0db824609f 100644
--- a/tools/mmp/Makefile
+++ b/tools/mmp/Makefile
@@ -117,6 +117,7 @@ mmp_sources = \
 	$(TOP)/tools/common/Target.cs \
 	$(TOP)/tools/common/Application.cs \
 	$(TOP)/tools/common/Assembly.cs \
+	$(TOP)/tools/common/DerivedLinkContext.cs \
 	$(TOP)/src/Foundation/ConnectAttribute.cs \
 	$(TOP)/src/Foundation/ExportAttribute.cs \
 	$(TOP)/src/ObjCRuntime/ArgumentSemantic.cs \
diff --git a/tools/mmp/Tuning.cs b/tools/mmp/Tuning.cs
index 688fe21770..cecc6839db 100644
--- a/tools/mmp/Tuning.cs
+++ b/tools/mmp/Tuning.cs
@@ -11,6 +11,7 @@ using MonoTouch.Tuner;
 using Xamarin.Bundler;
 using Xamarin.Linker;
 using Xamarin.Linker.Steps;
+using Xamarin.Tuner;
 using Xamarin.Utils;
 
 using Mono.Cecil;
@@ -54,11 +55,9 @@ namespace MonoMac.Tuner {
 		}
 	}
 
-	public class MonoMacLinkContext : LinkContext {
+	public class MonoMacLinkContext : DerivedLinkContext {
 
 		Dictionary<string, List<MethodDefinition>> pinvokes = new Dictionary<string, List<MethodDefinition>> ();
-		public Dictionary<string, MemberReference> RequiredSymbols = new Dictionary<string, MemberReference> ();
-		List<MethodDefinition> marshal_exception_pinvokes;
 
 		public MonoMacLinkContext (Pipeline pipeline, AssemblyResolver resolver) : base (pipeline, resolver)
 		{
@@ -67,14 +66,6 @@ namespace MonoMac.Tuner {
 		public IDictionary<string, List<MethodDefinition>> PInvokeModules {
 			get { return pinvokes; }
 		}
-
-		public List<MethodDefinition> MarshalExceptionPInvokes {
-			get {
-				if (marshal_exception_pinvokes == null)
-					marshal_exception_pinvokes = new List<MethodDefinition> ();
-				return marshal_exception_pinvokes;
-			}
-		}
 	}
 
 	class Linker {
diff --git a/tools/mmp/mmp.csproj b/tools/mmp/mmp.csproj
index 9f18fd4830..6dd3e44c92 100644
--- a/tools/mmp/mmp.csproj
+++ b/tools/mmp/mmp.csproj
@@ -292,6 +292,9 @@
     <Compile Include="..\common\Target.cs">
       <Link>external\Target.cs</Link>
     </Compile>
+    <Compile Include="..\common\DerivedLinkContext.cs">
+      <Link>external\DerivedLinkContext.cs</Link>
+    </Compile>
     <Compile Include="..\..\src\ObjCRuntime\Registrar.core.cs">
       <Link>external\Registrar.core.cs</Link>
     </Compile>
diff --git a/tools/mtouch/Makefile b/tools/mtouch/Makefile
index 0909aaf534..3e3e8a1c71 100644
--- a/tools/mtouch/Makefile
+++ b/tools/mtouch/Makefile
@@ -124,6 +124,7 @@ MTOUCH_SOURCES = \
 	BitcodeConverter.cs	\
 	$(TOP)/tools/common/Application.cs \
 	$(TOP)/tools/common/Assembly.cs \
+	$(TOP)/tools/common/DerivedLinkContext.cs \
 	$(TOP)/tools/common/Target.cs \
 	$(TOP)/tools/common/CompilerFlags.cs \
 	$(TOP)/src/Foundation/ExportAttribute.cs \
diff --git a/tools/mtouch/Tuning.cs b/tools/mtouch/Tuning.cs
index c714fd4506..9d1683a6d0 100644
--- a/tools/mtouch/Tuning.cs
+++ b/tools/mtouch/Tuning.cs
@@ -12,6 +12,7 @@ using Mono.Tuner;
 using Xamarin.Bundler;
 using Xamarin.Linker;
 using Xamarin.Linker.Steps;
+using Xamarin.Tuner;
 
 namespace MonoTouch.Tuner {
 
@@ -223,26 +224,7 @@ namespace MonoTouch.Tuner {
 		}
 	}
 
-	public class MonoTouchLinkContext : LinkContext {
-		Dictionary<string, MemberReference> required_symbols;
-		List<MethodDefinition> marshal_exception_pinvokes;
-
-		public Dictionary<string, MemberReference> RequiredSymbols {
-			get {
-				if (required_symbols == null)
-					required_symbols = new Dictionary<string, MemberReference> ();
-				return required_symbols;
-			}
-		}
-
-		public List<MethodDefinition> MarshalExceptionPInvokes {
-			get {
-				if (marshal_exception_pinvokes == null)
-					marshal_exception_pinvokes = new List<MethodDefinition> ();
-				return marshal_exception_pinvokes;
-			}
-		}
-
+	public class MonoTouchLinkContext : DerivedLinkContext {
 		public MonoTouchLinkContext (Pipeline pipeline, AssemblyResolver resolver)
 			: base (pipeline, resolver)
 		{
diff --git a/tools/mtouch/mtouch.csproj b/tools/mtouch/mtouch.csproj
index 6b40d72d0f..3f0d0091ff 100644
--- a/tools/mtouch/mtouch.csproj
+++ b/tools/mtouch/mtouch.csproj
@@ -262,6 +262,9 @@
     <Compile Include="..\common\Target.cs">
       <Link>external\Target.cs</Link>
     </Compile>
+    <Compile Include="..\common\DerivedLinkContext.cs">
+      <Link>external\DerivedLinkContext.cs</Link>
+    </Compile>
     <Compile Include="..\common\Frameworks.cs">
       <Link>external\Frameworks.cs</Link>
     </Compile>