diff --git a/mcs/class/corlib/corlib.csproj b/mcs/class/corlib/corlib.csproj
index a9200a3ddaf0..8f6f9b1a2d92 100644
--- a/mcs/class/corlib/corlib.csproj
+++ b/mcs/class/corlib/corlib.csproj
@@ -289,14 +289,11 @@
     <Compile Include="..\..\..\external\corefx\src\System.Threading.Tasks.Parallel\src\System\Threading\Tasks\ParallelLoopState.cs" />
     <Compile Include="..\..\..\external\corefx\src\System.Threading.Tasks.Parallel\src\System\Threading\Tasks\ParallelRangeManager.cs" />
     <Compile Include="..\..\..\external\corefx\src\System.Threading.Tasks.Parallel\src\System\Threading\Tasks\TaskReplicator.cs" />
-    <Compile Include="..\..\..\external\corert\src\Common\src\Interop\Unix\Interop.Libraries.cs" />
     <Compile Include="..\..\..\external\corert\src\Common\src\System\Collections\Generic\LowLevelList.cs" />
     <Compile Include="..\..\..\external\corert\src\Common\src\System\Numerics\Hashing\HashHelpers.cs" />
-    <Compile Include="..\..\..\external\corert\src\Runtime.Base\src\System\Runtime\InteropServices\NativeCallableAttribute.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\shared\System\Diagnostics\Debug.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\shared\System\String.Manipulation.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\shared\System\StringSpanHelpers.cs" />
-    <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\shared\System\Threading\DeferredDisposableLifetime.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\Internal\Runtime\Augments\AsyncCausalityTracer.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\Internal\Runtime\Augments\TaskTraceCallbacks.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\Internal\Threading\Tasks\Tracing\TaskTrace.cs" />
@@ -317,7 +314,6 @@
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\System\Threading\Tasks\TaskFactory.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\System\Threading\Tasks\TaskScheduler.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\System\Threading\Tasks\ThreadPoolTaskScheduler.cs" />
-    <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\System\Threading\ThreadPoolCallbackWrapper.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.Interop\src\InteropExtensions\Lock.cs" />
     <Compile Include="..\..\build\common\AssemblyRef.cs" />
     <Compile Include="..\..\build\common\Consts.cs" />
@@ -1814,15 +1810,19 @@
     <Compile Include="System\WindowsConsoleDriver.cs" />
   </ItemGroup>
   <ItemGroup Condition=" '$(Platform)' == 'net_4_x' ">
+    <Compile Include="..\..\..\external\corert\src\Common\src\Interop\Unix\Interop.Libraries.cs" />
     <Compile Include="..\..\..\external\corert\src\Common\src\Interop\Unix\System.Private.CoreLib.Native\Interop.MemAllocFree.cs" />
     <Compile Include="..\..\..\external\corert\src\Common\src\Interop\Windows\Interop.Libraries.cs" />
     <Compile Include="..\..\..\external\corert\src\Common\src\Interop\Windows\mincore\Interop.MemAllocFree.cs" />
     <Compile Include="..\..\..\external\corert\src\Common\src\Interop\Windows\mincore\Interop.ThreadPoolIO.cs" />
+    <Compile Include="..\..\..\external\corert\src\Runtime.Base\src\System\Runtime\InteropServices\NativeCallableAttribute.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\shared\Interop\Windows\Interop.Errors.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\shared\Interop\Windows\Interop.Libraries.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\shared\Interop\Windows\Kernel32\Interop.FormatMessage.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\shared\System\IO\Win32Marshal.cs" />
+    <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\shared\System\Threading\DeferredDisposableLifetime.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\Microsoft\Win32\SafeHandles\SafeThreadPoolIOHandle.cs" />
+    <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\System\Threading\ThreadPoolCallbackWrapper.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\System\Threading\Win32ThreadPoolBoundHandle.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\System\Threading\Win32ThreadPoolNativeOverlapped.cs" />
     <Compile Include="..\..\..\external\corert\src\System.Private.CoreLib\src\System\Threading\Win32ThreadPoolNativeOverlapped.ExecutionContextCallbackArgs.cs" />
diff --git a/mcs/class/corlib/corlib.dll.sources b/mcs/class/corlib/corlib.dll.sources
index b3b909d5072a..04eb36739d8d 100644
--- a/mcs/class/corlib/corlib.dll.sources
+++ b/mcs/class/corlib/corlib.dll.sources
@@ -110,6 +110,7 @@ System/Guid.cs
 System/IConsoleDriver.cs
 System/IntPtr.cs
 System/KnownTerminals.cs
+System/MathF.mono.cs
 System/MarshalByRefObject.cs
 System/MonoAsyncCall.cs
 System/MonoCQItem.cs
@@ -978,8 +979,6 @@ ReferenceSources/Type.cs
 ../referencesource/mscorlib/system/invalidtimezoneexception.cs
 ../referencesource/mscorlib/system/Lazy.cs
 ../referencesource/mscorlib/system/math.cs
-../../../external/corefx/src/Common/src/CoreLib/System/MathF.cs
-System/MathF.mono.cs
 ../referencesource/mscorlib/system/memberaccessexception.cs
 ../referencesource/mscorlib/system/methodaccessexception.cs
 ../referencesource/mscorlib/system/midpointrounding.cs
@@ -1041,36 +1040,6 @@ System/MathF.mono.cs
 ../referencesource/mscorlib/system/AppContext/AppContextSwitches.cs
 ReferenceSources/AppContextDefaultValues.cs
 
-../../../external/corefx/src/System.Runtime.Extensions/src/System/Collections/ArrayList.cs
-../../../external/corefx/src/System.Collections.NonGeneric/src/System/Collections/*.cs
-../../../external/corefx/src/System.Collections/src/System/Collections/BitArray.cs
-../../../external/corefx/src/System.Collections/src/System/Collections/StructuralComparisons.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/Comparer.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/DictionaryEntry.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/ICollection.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/IComparer.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/IDictionary.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/IDictionaryEnumerator.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/IEnumerable.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/IEnumerator.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/IEqualityComparer.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/IList.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/IStructuralComparable.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/IStructuralEquatable.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/ListDictionaryInternal.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/Generic/*.cs:NonRandomizedStringEqualityComparer.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/ObjectModel/Collection.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/ObjectModel/ReadOnlyCollection.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/DictionaryEntry.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/Generic/Dictionary.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/Generic/IDictionaryDebugView.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Collections/Generic/KeyValuePair.cs
-../../../external/corefx/src/Common/src/System/Collections/CompatibleComparer.cs
-../../../external/corefx/src/System.Runtime.Extensions/src/System/Collections/Hashtable.cs
-../../../external/corefx/src/System.Runtime.Extensions/src/System/Collections/IHashCodeProvider.cs
-../../../external/corefx/src/System.ObjectModel/src/System/Collections/Generic/DebugView.cs
-../../../external/corefx/src/System.ObjectModel/src/System/Collections/ObjectModel/KeyedCollection.cs
-../../../external/corefx/src/System.ObjectModel/src/System/Collections/ObjectModel/ReadOnlyDictionary.cs
 ../referencesource/mscorlib/system/collections/generic/comparer.cs
 ../referencesource/mscorlib/system/collections/generic/equalitycomparer.cs
 ../referencesource/mscorlib/system/collections/emptyreadonlydictionaryinternal.cs
@@ -1173,7 +1142,6 @@ ReferenceSources/AppContextDefaultValues.cs
 ../referencesource/mscorlib/system/reflection/assemblynameflags.cs
 ../referencesource/mscorlib/system/reflection/assemblynameproxy.cs
 ../referencesource/mscorlib/system/reflection/binder.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Reflection/BindingFlags.cs
 ../referencesource/mscorlib/system/reflection/callingconventions.cs
 ../referencesource/mscorlib/system/reflection/CustomAttributeExtensions.cs
 ../referencesource/mscorlib/system/reflection/defaultmemberattribute.cs
@@ -1315,38 +1283,18 @@ ReferenceSources/AppContextDefaultValues.cs
 ../referencesource/mscorlib//system/runtime/reliability/prepreparemethodattribute.cs
 ../referencesource/mscorlib//system/runtime/reliability/reliabilitycontractattribute.cs
 
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/AccessedThroughPropertyAttribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/assemblyattributesgohere.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/assemblysettingattributes.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/AsyncStateMachineAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CallerFilePathAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CallerLineNumberAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CallerMemberNameAttribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/callingconvention.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CompilerGeneratedAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CompilerGlobalScopeAttribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/compilationrelaxations.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/compilermarshaloverride.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CustomConstantAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/DateTimeConstantAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/DecimalConstantAttribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/decoratednameattribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/DisablePrivateReflectionAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/DiscardableAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/ExtensionAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/FixedAddressValueTypeAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/FixedBufferAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/FormattableStringFactory.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/hascopysemanticsattribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IAsyncStateMachine.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/idispatchconstantattribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/internalsvisibletoattribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IndexerNameAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/INotifyCompletion.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/isboxed.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/isbyvalue.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IsConst.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/iscopyconstructed.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/isexplicitlydereferenced.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/isimplicitlydereferenced.cs
@@ -1355,26 +1303,13 @@ ReferenceSources/AppContextDefaultValues.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/ispinned.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/issignunspecifiedbyte.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/isudtreturn.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IsVolatile.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IteratorStateMachineAttribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/iunknownconstantattribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/methodimplattribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/nativecppclassattribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/HResults.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/ReferenceAssemblyAttribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/requiredattributeattribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/RuntimeCompatibilityAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/RuntimeWrappedException.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/scopelessenumattribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/SpecialNameAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/StateMachineAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/SuppressIldasmAttribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/suppressmergecheckattribute.cs
-../../../external/corert/src/System.Private.CoreLib/src/System/Runtime/CompilerServices/TaskAwaiter.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/typedependencyattribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/TypeForwardedFromAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/TypeForwardedToAttribute.cs
-../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/UnsafeValueTypeAttribute.cs
 ../referencesource/mscorlib/system/runtime/compilerservices/YieldAwaitable.cs
 
 ../referencesource/mscorlib/system/security/attributes.cs
@@ -1602,6 +1537,9 @@ coreclr/SorterArray.cs
 
 corefx/AwaitTaskContinuation.cs
 corefx/SynchronizationContext.cs
+corefx/SR.cs
+corefx/CompareInfo.cs
+corefx/GlobalizationMode.cs
 
 corert/DependencyReductionRootAttribute.cs
 corert/AddrofIntrinsics.cs
@@ -1615,18 +1553,13 @@ corert/Task.cs
 corert/ThreadPool.cs
 corert/RuntimeAugments.cs
 
-../../../external/corert/src/Common/src/Interop/Unix/Interop.Libraries.cs
-
 ../../../external/corert/src/Common/src/System/Collections/Generic/LowLevelList.cs
 
 ../../../external/corert/src/Common/src/System/Numerics/Hashing/HashHelpers.cs
 
-../../../external/corert/src/Runtime.Base/src/System/Runtime/InteropServices/NativeCallableAttribute.cs
-
 ../../../external/corert/src/System.Private.CoreLib/shared/System/String.Manipulation.cs
 ../../../external/corert/src/System.Private.CoreLib/shared/System/StringSpanHelpers.cs
 ../../../external/corert/src/System.Private.CoreLib/shared/System/Diagnostics/Debug.cs
-../../../external/corert/src/System.Private.CoreLib/shared/System/Threading/DeferredDisposableLifetime.cs
 
 ../../../external/corert/src/System.Private.CoreLib/src/Internal/Runtime/Augments/AsyncCausalityTracer.cs
 ../../../external/corert/src/System.Private.CoreLib/src/Internal/Runtime/Augments/TaskTraceCallbacks.cs
@@ -1641,11 +1574,10 @@ corert/RuntimeAugments.cs
 ../../../external/corert/src/System.Private.CoreLib/src/System/Globalization/GlobalizationMode.cs
 
 ../../../external/corert/src/System.Private.CoreLib/src/System/Runtime/CompilerServices/ReflectionBlockedAttribute.cs
+../../../external/corert/src/System.Private.CoreLib/src/System/Runtime/CompilerServices/TaskAwaiter.cs
 
 ../../../external/corert/src/System.Private.CoreLib/src/System/Threading/LockHolder.cs
 
-../../../external/corert/src/System.Private.CoreLib/src/System/Threading/ThreadPoolCallbackWrapper.cs
-
 ../../../external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/DebuggerSupport.cs
 ../../../external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/DebuggerSupport.Dummy.cs
 ../../../external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/TaskFactory.cs
@@ -1660,10 +1592,21 @@ corert/RuntimeAugments.cs
 
 ../../../external/corert/src/System.Private.Interop/src/InteropExtensions/Lock.cs
 
-corefx/SR.cs
-corefx/CompareInfo.cs
-corefx/GlobalizationMode.cs
 
+../../../external/corefx/src/System.Runtime.Extensions/src/System/Collections/ArrayList.cs
+../../../external/corefx/src/System.Collections.NonGeneric/src/System/Collections/*.cs
+../../../external/corefx/src/System.Collections/src/System/Collections/BitArray.cs
+../../../external/corefx/src/System.Collections/src/System/Collections/StructuralComparisons.cs
+../../../external/corefx/src/Common/src/System/Collections/CompatibleComparer.cs
+
+../../../external/corefx/src/System.Runtime.Extensions/src/System/Collections/Hashtable.cs
+../../../external/corefx/src/System.Runtime.Extensions/src/System/Collections/IHashCodeProvider.cs
+../../../external/corefx/src/System.ObjectModel/src/System/Collections/Generic/DebugView.cs
+../../../external/corefx/src/System.ObjectModel/src/System/Collections/ObjectModel/KeyedCollection.cs
+../../../external/corefx/src/System.ObjectModel/src/System/Collections/ObjectModel/ReadOnlyDictionary.cs
+
+../../../external/corefx/src/Common/src/CoreLib/System/HResults.cs
+../../../external/corefx/src/Common/src/CoreLib/System/MathF.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Marvin.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Memory.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/MemoryDebugView.cs
@@ -1688,6 +1631,27 @@ corefx/GlobalizationMode.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Buffers/MemoryManager.cs
 
 ../../../external/corefx/src/Common/src/CoreLib/System/Collections/HashHelpers.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/Comparer.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/DictionaryEntry.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/ICollection.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/IComparer.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/IDictionary.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/IDictionaryEnumerator.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/IEnumerable.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/IEnumerator.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/IEqualityComparer.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/IList.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/IStructuralComparable.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/IStructuralEquatable.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/ListDictionaryInternal.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/DictionaryEntry.cs
+
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/Generic/*.cs:NonRandomizedStringEqualityComparer.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/ObjectModel/Collection.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/ObjectModel/ReadOnlyCollection.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/Generic/Dictionary.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/Generic/IDictionaryDebugView.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Collections/Generic/KeyValuePair.cs
 
 ../../../external/corefx/src/Common/src/CoreLib/System/Diagnostics/StackTraceHiddenAttribute.cs
 
@@ -1700,6 +1664,8 @@ corefx/GlobalizationMode.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Numerics/Vector.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Numerics/Vector_Operations.cs
 
+../../../external/corefx/src/Common/src/CoreLib/System/Reflection/BindingFlags.cs
+
 ../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/AsyncMethodBuilderAttribute.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/AsyncValueTaskMethodBuilder.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/ConfiguredValueTaskAwaitable.cs
@@ -1710,6 +1676,38 @@ corefx/GlobalizationMode.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/RuntimeFeature.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/TupleElementNamesAttribute.cs
 ../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/ValueTaskAwaiter.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/AccessedThroughPropertyAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/AsyncStateMachineAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CallerFilePathAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CallerLineNumberAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CallerMemberNameAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CompilerGeneratedAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CompilerGlobalScopeAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/CustomConstantAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/DateTimeConstantAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/DecimalConstantAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/DisablePrivateReflectionAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/DiscardableAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/ExtensionAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/FixedAddressValueTypeAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/FixedBufferAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/FormattableStringFactory.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IAsyncStateMachine.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IndexerNameAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/INotifyCompletion.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IsConst.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IsVolatile.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/IteratorStateMachineAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/ReferenceAssemblyAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/RuntimeCompatibilityAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/RuntimeWrappedException.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/SpecialNameAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/StateMachineAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/SuppressIldasmAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/TypeForwardedFromAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/TypeForwardedToAttribute.cs
+../../../external/corefx/src/Common/src/CoreLib/System/Runtime/CompilerServices/UnsafeValueTypeAttribute.cs
+
 
 ../../../external/corefx/src/Common/src/CoreLib/System/Runtime/InteropServices/MemoryMarshal.cs
 
diff --git a/mcs/class/corlib/net_4_x_corlib.dll.sources b/mcs/class/corlib/net_4_x_corlib.dll.sources
index d1a48ceca489..a31baa535629 100644
--- a/mcs/class/corlib/net_4_x_corlib.dll.sources
+++ b/mcs/class/corlib/net_4_x_corlib.dll.sources
@@ -3,8 +3,13 @@
 corert/Interop.cs
 corert/Interop.MemAllocFree.cs
 
+../../../external/corert/src/Common/src/Interop/Unix/Interop.Libraries.cs
+../../../external/corert/src/Runtime.Base/src/System/Runtime/InteropServices/NativeCallableAttribute.cs
+
+
 ../../../external/corert/src/System.Private.CoreLib/shared/Interop/Windows/Interop.Errors.cs
 ../../../external/corert/src/System.Private.CoreLib/shared/Interop/Windows/Interop.Libraries.cs
+../../../external/corert/src/System.Private.CoreLib/shared/System/Threading/DeferredDisposableLifetime.cs
 
 ../../../external/corert/src/System.Private.CoreLib/shared/Interop/Windows/Kernel32/Interop.FormatMessage.cs
 
@@ -19,6 +24,7 @@ corert/Interop.MemAllocFree.cs
 
 ../../../external/corert/src/System.Private.CoreLib/src/Microsoft/Win32/SafeHandles/SafeThreadPoolIOHandle.cs
 
+../../../external/corert/src/System.Private.CoreLib/src/System/Threading/ThreadPoolCallbackWrapper.cs
 ../../../external/corert/src/System.Private.CoreLib/src/System/Threading/Win32ThreadPoolBoundHandle.cs
 ../../../external/corert/src/System.Private.CoreLib/src/System/Threading/Win32ThreadPoolNativeOverlapped.cs
 ../../../external/corert/src/System.Private.CoreLib/src/System/Threading/Win32ThreadPoolNativeOverlapped.ExecutionContextCallbackArgs.cs