From e16c8bb5304044c643b5266691703abe2b115550 Mon Sep 17 00:00:00 2001
From: dotnet-bot <dotnet-bot@microsoft.com>
Date: Tue, 29 Sep 2015 17:10:41 -0700
Subject: [PATCH] Add initial corert build scripts

Populating repo with build infrastructure from the corefx project. Scripts are copied verbatim from the corefx repo as of commit 1ee4f60145a851adbacbb16e7b0c65bec3ec0d02.
Only minor changes were done to remove corefx-specific workarounds.
Also integrating the type system into the build.
---
 build.cmd                                     |  53 +
 build.proj                                    |  40 +
 dir.props                                     | 270 +++++
 dir.targets                                   | 122 +++
 dir.traversal.targets                         | 103 ++
 src/.nuget/packages.Unix.config               |   8 +
 src/.nuget/packages.Windows_NT.config         |   5 +
 src/BuildValues.props                         |  13 +
 src/NuGet.config                              |  16 +
 .../src/TypeSystem.Ecma.csproj                |  52 +
 src/TypeSystem.Ecma/src/project.json          |  22 +
 src/TypeSystem.Ecma/src/project.lock.json     | 979 ++++++++++++++++++
 src/TypeSystem/src/Common/TypeSystem.csproj   |  93 --
 src/TypeSystem/src/Common/packages.config     |   4 -
 .../src/Ecma/TypeSystem.Ecma.csproj           |  88 --
 src/TypeSystem/src/Ecma/packages.config       |   5 -
 src/TypeSystem/src/TypeSystem.csproj          |  62 ++
 src/TypeSystem/src/project.json               |  21 +
 src/TypeSystem/src/project.lock.json          | 939 +++++++++++++++++
 src/dir.props                                 |   3 +
 src/dir.targets                               |  21 +
 src/dirs.proj                                 |  41 +
 22 files changed, 2770 insertions(+), 190 deletions(-)
 create mode 100644 build.cmd
 create mode 100644 build.proj
 create mode 100644 dir.props
 create mode 100644 dir.targets
 create mode 100644 dir.traversal.targets
 create mode 100644 src/.nuget/packages.Unix.config
 create mode 100644 src/.nuget/packages.Windows_NT.config
 create mode 100644 src/BuildValues.props
 create mode 100644 src/NuGet.config
 create mode 100644 src/TypeSystem.Ecma/src/TypeSystem.Ecma.csproj
 create mode 100644 src/TypeSystem.Ecma/src/project.json
 create mode 100644 src/TypeSystem.Ecma/src/project.lock.json
 delete mode 100644 src/TypeSystem/src/Common/TypeSystem.csproj
 delete mode 100644 src/TypeSystem/src/Common/packages.config
 delete mode 100644 src/TypeSystem/src/Ecma/TypeSystem.Ecma.csproj
 delete mode 100644 src/TypeSystem/src/Ecma/packages.config
 create mode 100644 src/TypeSystem/src/TypeSystem.csproj
 create mode 100644 src/TypeSystem/src/project.json
 create mode 100644 src/TypeSystem/src/project.lock.json
 create mode 100644 src/dir.props
 create mode 100644 src/dir.targets
 create mode 100644 src/dirs.proj

diff --git a/build.cmd b/build.cmd
new file mode 100644
index 00000000000..b4fee251cce
--- /dev/null
+++ b/build.cmd
@@ -0,0 +1,53 @@
+@echo off
+setlocal
+
+:: Note: We've disabled node reuse because it causes file locking issues.
+::       The issue is that we extend the build with our own targets which
+::       means that that rebuilding cannot successfully delete the task
+::       assembly. 
+
+if not defined VisualStudioVersion (
+    if defined VS140COMNTOOLS (
+        call "%VS140COMNTOOLS%\VsDevCmd.bat"
+        goto :EnvSet
+    )
+
+    if defined VS120COMNTOOLS (
+        call "%VS120COMNTOOLS%\VsDevCmd.bat"
+        goto :EnvSet
+    )
+
+    echo Error: build.cmd requires Visual Studio 2013 or 2015.  
+    echo        Please see https://github.com/dotnet/corefx/blob/master/Documentation/project-docs/developer-guide.md for build instructions.
+    exit /b 1
+)
+
+:EnvSet
+
+:: Log build command line
+set _buildproj=%~dp0build.proj
+set _buildlog=%~dp0msbuild.log
+set _buildprefix=echo
+set _buildpostfix=^> "%_buildlog%"
+call :build %*
+
+:: Build
+set _buildprefix=
+set _buildpostfix=
+call :build %*
+
+goto :AfterBuild
+
+:build
+%_buildprefix% msbuild "%_buildproj%" /nologo /maxcpucount /verbosity:minimal /nodeReuse:false /fileloggerparameters:Verbosity=normal;LogFile="%_buildlog%";Append %* %_buildpostfix%
+set BUILDERRORLEVEL=%ERRORLEVEL%
+goto :eof
+
+:AfterBuild
+
+echo.
+:: Pull the build summary from the log file
+findstr /ir /c:".*Warning(s)" /c:".*Error(s)" /c:"Time Elapsed.*" "%_buildlog%"
+echo Build Exit Code = %BUILDERRORLEVEL%
+
+exit /b %BUILDERRORLEVEL%
\ No newline at end of file
diff --git a/build.proj b/build.proj
new file mode 100644
index 00000000000..9a45c513480
--- /dev/null
+++ b/build.proj
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="BuildAndTest" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="dir.props" />
+
+  <ItemGroup>
+    <Project Include="src\dirs.proj" />
+  </ItemGroup>
+
+  <Import Project="dir.targets" />
+
+  <Import Project="dir.traversal.targets" />
+
+  <PropertyGroup>
+    <TraversalBuildDependsOn>
+      BatchRestorePackages;
+      $(TraversalBuildDependsOn);
+    </TraversalBuildDependsOn>
+  </PropertyGroup>
+
+  <Target Name="BatchRestorePackages">
+    <Message Importance="High" Text="Restoring all packages..." />
+    <!-- restore all project.jsons in one pass for perf & to avoid concurrency problems with dnu -->
+    <!-- include ToolsDir to restore test-runtime\project.json as well -->
+    <Exec Command="$(DnuRestoreCommand) $(DnuRestoreDirs)" StandardOutputImportance="Low" CustomErrorRegularExpression="^Unable to locate .*" />
+
+    <ItemGroup>
+      <_allPackagesConfigs Include="$(MSBuildProjectDirectory)\src\**\packages.config"/>
+    </ItemGroup>
+    <Exec Condition="'@(_allPackagesConfigs)' != ''" Command="$(NugetRestoreCommand) &quot;%(_allPackagesConfigs.FullPath)&quot;" StandardOutputImportance="Low" />
+  </Target>
+
+  <!-- Override RestorePackages from dir.traversal.targets and do a batch restore -->
+  <Target Name="RestorePackages" DependsOnTargets="BatchRestorePackages" />
+
+  <!-- Override clean from dir.traversal.targets and just remove the full BinDir -->
+  <Target Name="Clean">
+    <RemoveDir Directories="$(BinDir)" />
+  </Target>
+
+</Project>
\ No newline at end of file
diff --git a/dir.props b/dir.props
new file mode 100644
index 00000000000..5da25ec1038
--- /dev/null
+++ b/dir.props
@@ -0,0 +1,270 @@
+<Project ToolsVersion="12.0" DefaultTargets="Build" InitialTargets="CheckRoslyn" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Condition="Exists('..\dir.props')" Project="..\dir.props" />
+
+  <!--
+    $(OS) is set to Unix/Windows_NT. This comes from an environment variable on Windows and MSBuild on Unix.
+  -->
+  <PropertyGroup>
+    <OsEnvironment Condition="'$(OsEnvironment)'==''">$(OS)</OsEnvironment>
+  </PropertyGroup>
+
+  <!-- Build Tools Versions -->
+  <PropertyGroup>
+    <BuildToolsVersion>1.0.25-prerelease-00095</BuildToolsVersion>
+    <DnxVersion>1.0.0-beta7</DnxVersion>
+    <DnxPackageName Condition="'$(DnxPackageName)' == '' and '$(OsEnvironment)'!='Unix'">dnx-coreclr-win-x86.$(DnxVersion)</DnxPackageName>
+    <DnxPackageName Condition="'$(DnxPackageName)' == '' and '$(OsEnvironment)'=='Unix'">dnx-mono.$(DnxVersion)</DnxPackageName>
+    <RoslynVersion>1.0.0-rc3-20150510-01</RoslynVersion>
+    <RoslynPackageName>Microsoft.Net.ToolsetCompilers</RoslynPackageName>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <AssemblyMetadata Include=".NETFrameworkAssembly">
+      <Value></Value>
+    </AssemblyMetadata>
+    <AssemblyMetadata Include="Serviceable">
+      <Value>True</Value>
+    </AssemblyMetadata>
+  </ItemGroup>
+
+  <!-- Common repo directories -->
+  <PropertyGroup>
+    <ProjectDir>$(MSBuildThisFileDirectory)</ProjectDir>
+    <SourceDir>$(ProjectDir)src/</SourceDir>
+
+    <!-- Output directories -->
+    <BinDir Condition="'$(BinDir)'==''">$(ProjectDir)bin/</BinDir>
+    <ObjDir Condition="'$(ObjDir)'==''">$(BinDir)obj/</ObjDir>
+    <TestWorkingDir Condition="'$(TestWorkingDir)'==''">$(BinDir)tests/</TestWorkingDir>
+    <PackagesOutDir Condition="'$(PackagesOutDir)'==''">$(BinDir)packages/</PackagesOutDir>
+
+    <!-- Input Directories -->
+    <PackagesDir Condition="'$(PackagesDir)'==''">$(ProjectDir)packages/</PackagesDir>
+    <ToolsDir Condition="'$(ToolsDir)'==''">$(PackagesDir)Microsoft.DotNet.BuildTools.$(BuildToolsVersion)/lib/</ToolsDir>
+  </PropertyGroup>
+
+  <!-- list of nuget package sources passed to nuget.exe -->
+  <ItemGroup>
+    <NuGetSourceList Include="https:%2F%2Fwww.myget.org/F/dotnet-buildtools" />
+    <NuGetSourceList Include="https:%2F%2Fwww.nuget.org/api/v2" />
+  </ItemGroup>
+
+  <!-- Common nuget properties -->
+  <PropertyGroup>
+    <NuGetToolPath Condition="'$(NuGetToolPath)'==''">$(PackagesDir)NuGet.exe</NuGetToolPath>
+    <NuGetPackageSource>@(NuGetSourceList -> '-source %(Identity)', ' ')</NuGetPackageSource>
+    <NuGetConfigCommandLine>$(NuGetPackageSource)</NuGetConfigCommandLine>
+
+    <NugetRestoreCommand>"$(NuGetToolPath)"</NugetRestoreCommand>
+    <NugetRestoreCommand>$(NugetRestoreCommand) install</NugetRestoreCommand>
+    <!-- NuGet.exe doesn't like trailing slashes in the output directory argument -->
+    <NugetRestoreCommand>$(NugetRestoreCommand) -OutputDirectory "$(PackagesDir.TrimEnd('/\'.ToCharArray()))"</NugetRestoreCommand>
+    <NugetRestoreCommand>$(NugetRestoreCommand) $(NuGetConfigCommandLine)</NugetRestoreCommand>
+    <NugetRestoreCommand>$(NugetRestoreCommand) -Verbosity detailed</NugetRestoreCommand>
+    <NugetRestoreCommand Condition="'$(OsEnvironment)'=='Unix'">mono $(NuGetRestoreCommand)</NugetRestoreCommand>
+  </PropertyGroup>
+
+  <!-- list of nuget package sources passed to dnu -->
+  <ItemGroup>
+    <!-- Need to escape double forward slash (%2F) or MSBuild will normalize to one slash on Unix. -->
+    <DnuSourceList Include="https:%2F%2Fwww.myget.org/F/dotnet-core/" />
+    <DnuSourceList Include="https:%2F%2Fwww.myget.org/F/dotnet-coreclr/" />
+    <DnuSourceList Include="https:%2F%2Fwww.myget.org/F/dotnet-corefxtestdata/" />
+    <DnuSourceList Include="https:%2F%2Fwww.myget.org/F/dotnet-buildtools/" />
+    <DnuSourceList Include="https:%2F%2Fwww.nuget.org/api/v2/" />
+  </ItemGroup>
+
+    <!-- list of directories to perform batch restore -->
+  <ItemGroup>
+    <DnuRestoreDir Include="&quot;$(MSBuildProjectDirectory)\src&quot;" />
+    <DnuRestoreDir Include="&quot;$(ToolsDir)&quot;" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <DnxPackageDir Condition="'$(DnxPackageDir)'==''">$(PackagesDir)/$(DnxPackageName)/</DnxPackageDir>
+    <DnuToolPath Condition="'$(DnuToolPath)'=='' and '$(OsEnvironment)'!='Unix'">$(DnxPackageDir)\bin\dnu.cmd</DnuToolPath>
+    <DnuToolPath Condition="'$(DnuToolPath)'=='' and '$(OsEnvironment)'=='Unix'">$(DnxPackageDir)/bin/dnu</DnuToolPath>
+
+    <DnuRestoreSource>@(DnuSourceList -> '--source %(Identity)', ' ')</DnuRestoreSource>
+    <DnuRestoreDirs>@(DnuRestoreDir -> '%(Identity)', ' ')</DnuRestoreDirs>
+
+    <DnuRestoreCommand>"$(DnuToolPath)"</DnuRestoreCommand>
+    <DnuRestoreCommand>$(DnuRestoreCommand) restore</DnuRestoreCommand>
+    <DnuRestoreCommand Condition="'$(ParallelRestore)'=='true'">$(DnuRestoreCommand) --parallel</DnuRestoreCommand>
+    <DnuRestoreCommand>$(DnuRestoreCommand) --packages "$(PackagesDir.TrimEnd('/\'.ToCharArray()))" $(DnuRestoreSource)</DnuRestoreCommand>
+    <DnuRestoreCommand Condition="'$(LockDependencies)' == 'true'">$(DnuRestoreCommand) --lock</DnuRestoreCommand>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(BuildAllProjects)'=='true'">
+    <!-- When we do a traversal build we get all packages up front, don't restore them again -->
+    <RestorePackages>false</RestorePackages>
+  </PropertyGroup>
+
+  <!--
+    Set up Roslyn predefines
+  -->
+  <PropertyGroup>
+    <RoslynPackageDir>$(PackagesDir)/$(RoslynPackageName).$(RoslynVersion)/</RoslynPackageDir>
+    <RoslynPropsFile>$(RoslynPackageDir)build/Microsoft.Net.ToolsetCompilers.props</RoslynPropsFile>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(OsEnvironment)'=='Unix' and '$(UseRoslynCompiler)'=='true'">
+    <!--
+      PDB support isn't implemented yet. https://github.com/dotnet/roslyn/issues/2449
+      Note that both DebugSymbols and DebugType need set or project references will assume they need to copy pdbs and fail.
+    -->
+    <DebugSymbols>false</DebugSymbols>
+    <DebugType>none</DebugType>
+    <!--
+      Delay signing with the ECMA key currently doesn't work.
+      https://github.com/dotnet/roslyn/issues/2444
+    -->
+    <UseECMAKey>false</UseECMAKey>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(OsEnvironment)'=='Unix'">
+    <!--
+      Mono currently doesn't include VB targets for portable, notably /lib/mono/xbuild/Microsoft/Portable/v4.5/Microsoft.Portable.VisualBasic.targets.
+      Fixed in https://github.com/mono/mono/pull/1726.
+    -->
+    <IncludeVbProjects>false</IncludeVbProjects>
+    <!--
+      Building packages fails for two reasons.
+      First, nuget doesn't like the paths in the nuspec having backslashes as directory separators.
+      Second, we aren't yet building pdbs, which the nuspecs specify.
+    -->
+    <SkipBuildPackages>true</SkipBuildPackages>
+  </PropertyGroup>
+
+  <!-- 
+  Projects that have no OS-specific implementations just use Debug and Release for $(Configuration).
+  Projects that do have OS-specific implementations use OS_Debug and OS_Release, for all OS's we support even
+  if the code is the same between some OS's (so if you have some project that just calls POSIX APIs, we still have
+  OSX_[Debug|Release] and Linux_[Debug|Release] configurations.  We do this so that we place all the output under
+  a single binary folder and can have a similar experience between the command line and Visual Studio.
+  
+  Since now have multiple *Debug and *Release configurations, ConfigurationGroup is set to Debug for any of the
+  debug configurations, and to Release for any of the release configurations.
+  -->
+
+  <!-- Set default Configuration and Platform -->
+  <PropertyGroup>
+    <Platform Condition="'$(Platform)'==''">AnyCPU</Platform>
+
+    <Configuration Condition="'$(Configuration)'==''">Debug</Configuration>
+    <ConfigurationGroup Condition="$(Configuration.EndsWith('Debug'))">Debug</ConfigurationGroup>
+    <ConfigurationGroup Condition="$(Configuration.EndsWith('Release'))">Release</ConfigurationGroup>
+    <ConfigurationGroup Condition="'$(ConfigurationGroup)'==''">$(Configuration)</ConfigurationGroup>
+
+    <OSGroup Condition="'$(OSGroup)'=='' and $(Configuration.StartsWith('Windows'))">Windows_NT</OSGroup>
+    <OSGroup Condition="'$(OSGroup)'=='' and $(Configuration.StartsWith('Linux'))">Linux</OSGroup>
+    <OSGroup Condition="'$(OSGroup)'=='' and $(Configuration.StartsWith('OSX'))">OSX</OSGroup>
+    <OSGroup Condition="'$(OSGroup)'=='' and $(Configuration.StartsWith('FreeBSD'))">FreeBSD</OSGroup>
+    <OSGroup Condition="'$(OSGroup)'==''">Windows_NT</OSGroup>
+  </PropertyGroup>
+
+  <!-- Set up Default symbol and optimization for Configuration -->
+  <PropertyGroup Condition="'$(ConfigurationGroup)' == 'Debug'">
+    <DebugSymbols Condition="'$(DebugSymbols)' == ''">true</DebugSymbols>
+    <Optimize Condition="'$(Optimize)' == ''">false</Optimize>
+    <DebugType Condition="'$(DebugType)' == ''">full</DebugType>
+    <DefineConstants>$(DefineConstants),DEBUG,TRACE</DefineConstants>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(ConfigurationGroup)' == 'Release'">
+    <DebugSymbols Condition="'$(DebugSymbols)' == ''">true</DebugSymbols>
+    <Optimize Condition="'$(Optimize)' == ''">true</Optimize>
+    <DebugType Condition="'$(DebugType)' == ''">pdbonly</DebugType>
+    <DefineConstants>$(DefineConstants),TRACE</DefineConstants>
+  </PropertyGroup>
+
+  <!-- Disable some standard properties for building our projects -->
+  <PropertyGroup>
+    <NoStdLib>true</NoStdLib>
+    <NoExplicitReferenceToStdLib>true</NoExplicitReferenceToStdLib>
+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>
+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
+  </PropertyGroup>
+
+  <!-- Set up handling of build warnings -->
+  <PropertyGroup>
+    <WarningLevel>4</WarningLevel>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+  </PropertyGroup>
+
+  <!-- Temporary until build/CI system is upgraded to C# 6: disable C# 6 features -->
+  <PropertyGroup Condition="'$(MSBuildProjectExtension)' == '.csproj' OR '$(Language)' == 'C#'">
+    <LangVersion>5</LangVersion>
+  </PropertyGroup>
+
+  <!-- Set up some common paths -->
+  <PropertyGroup>
+    <CommonPath>$(SourceDir)Common\src</CommonPath>
+    <CommonTestPath>$(SourceDir)Common\tests</CommonTestPath>
+  </PropertyGroup>
+
+  <!-- Set up the default output and intermediate paths -->
+  <PropertyGroup>
+    <OSPlatformConfig>$(OSGroup).$(Platform).$(ConfigurationGroup)</OSPlatformConfig>
+
+    <BaseOutputPath Condition="'$(BaseOutputPath)'==''">$(BinDir)</BaseOutputPath>
+    <OutputPath Condition="'$(OutputPath)'==''">$(BaseOutputPath)$(OSPlatformConfig)\$(MSBuildProjectName)\</OutputPath>
+
+    <BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)'==''">$(ObjDir)</BaseIntermediateOutputPath>
+    <IntermediateOutputRootPath Condition="'$(IntermediateOutputRootPath)' == ''">$(BaseIntermediateOutputPath)$(OSPlatformConfig)\</IntermediateOutputRootPath>
+    <IntermediateOutputPath Condition="'$(IntermediateOutputPath)' == ''">$(IntermediateOutputRootPath)$(MSBuildProjectName)\</IntermediateOutputPath>
+
+    <TestPath Condition="'$(TestPath)'==''">$(TestWorkingDir)$(OSPlatformConfig)\$(MSBuildProjectName)\</TestPath>
+
+    <PackagesBasePath Condition="'$(PackagesBasePath)'==''">$(BinDir)$(OSPlatformConfig)</PackagesBasePath>
+  </PropertyGroup>
+
+  <!-- Set up common target properties that we use to conditionally include sources -->
+  <PropertyGroup>
+    <TargetsWindows Condition="'$(OSGroup)' == 'Windows_NT'">true</TargetsWindows>
+    <TargetsLinux Condition="'$(OSGroup)' == 'Linux'">true</TargetsLinux>
+    <TargetsOSX Condition="'$(OSGroup)' == 'OSX'">true</TargetsOSX>
+    <TargetsFreeBSD Condition="'$(OSGroup)' == 'FreeBSD'">true</TargetsFreeBSD>
+
+    <TargetsUnix Condition="'$(TargetsLinux)' == 'true' or '$(TargetsOSX)' == 'true' or '$(TargetsFreeBSD)' == 'true'">true</TargetsUnix>
+  </PropertyGroup>
+  <!-- Make some assumptions based on TargetsPlatform -->
+  <PropertyGroup Condition="'$(UseUnixPackageTargetRuntimeDefaults)' == 'true' OR '$(UsePackageTargetRuntimeDefaults)' == 'true'">
+    <PackageTargetRuntime Condition=" '$(TargetsLinux)' == 'true'  AND '$(PackageTargetRuntime)' == ''">linux</PackageTargetRuntime>
+    <PackageTargetRuntime Condition=" '$(TargetsOSX)' == 'true'  AND '$(PackageTargetRuntime)' == ''">osx</PackageTargetRuntime>
+    <PackageTargetRuntime Condition=" '$(TargetsUnix)' == 'true' AND '$(PackageTargetRuntime)' == ''">unix</PackageTargetRuntime>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(UseWindowsPackageTargetRuntimeDefault)' == 'true' OR '$(UsePackageTargetRuntimeDefaults)' == 'true'">
+    <PackageTargetRuntime Condition=" '$(TargetsWindows)' == 'true' AND '$(PackageTargetRuntime)' == ''">win7</PackageTargetRuntime>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <!-- Don't run tests if we're building another platform's binaries on Windows -->
+    <SkipTests Condition="'$(SkipTests)'=='' and ('$(OsEnvironment)'=='Windows_NT' and '$(TargetsWindows)'!='true')">true</SkipTests>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <!-- Work around known Dev14 bug - see
+         https://connect.microsoft.com/VisualStudio/feedback/details/1000796/connect-file-uap-props-not-found-cant-build-a-portable-lib-on-vs14
+    -->
+    <_WindowsKitBinPath>$(MSBuildProgramFiles32)\Windows Kits\8.1\bin\x86</_WindowsKitBinPath>
+    <_WindowsPhoneKitBinPath>$(MSBuildProgramFiles32)\Windows Phone Kits\8.1\bin</_WindowsPhoneKitBinPath>
+    <MakePriExeFullPath>$(_WindowsKitBinPath)\makepri.exe</MakePriExeFullPath>
+    <MakeAppxExeFullPath>$(_WindowsKitBinPath)\makeappx.exe</MakeAppxExeFullPath>
+    <SignAppxPackageExeFullPath>$(_WindowsKitBinPath)\signtool.exe</SignAppxPackageExeFullPath>
+    <MakePriExtensionPath>$(_WindowsPhoneKitBinPath)\x86\MrmEnvironmentExtDl.dll</MakePriExtensionPath>
+    <MakePriExtensionPath_x64>$(_WindowsPhoneKitBinPath)\x64\MrmEnvironmentExtDl.dll</MakePriExtensionPath_x64>
+  </PropertyGroup>
+  
+  <!-- Perf test setup - Required until v5.0 is mandatory across CoreFX-->
+  <PropertyGroup>
+    <RunPerfTestsForProject Condition="'$(Performance)' == 'true' and '$(OS)' == 'Windows_NT' and Exists('$(MSBuildProgramFiles32)\MSBuild\Microsoft\Portable\v5.0\Microsoft.Portable.CSharp.targets')" >true</RunPerfTestsForProject>
+  </PropertyGroup>
+
+  <Import Project="$(RoslynPropsFile)"
+          Condition="'$(UseRoslynCompiler)'=='true' and Exists('$(RoslynPropsFile)')" />
+
+  <!-- Building the build.proj should restore successfully, so ignore in that case -->
+  <Target Name="CheckRoslyn" Condition="'$(UseRoslynCompiler)'=='true' and '$(MSBuildProjectFile)'!='build.proj'">
+    <Warning Condition="!Exists('$(RoslynPropsFile)')"
+             Text="The Roslyn targets do not exist- Roslyn will not be used for this build, but the package should be restored if you build again." />
+  </Target>
+</Project>
diff --git a/dir.targets b/dir.targets
new file mode 100644
index 00000000000..b24dcdffa05
--- /dev/null
+++ b/dir.targets
@@ -0,0 +1,122 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" InitialTargets="_RestoreBuildToolsWrapper" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+
+  <!-- Inline task to bootstrap the build to enable downloading nuget.exe -->
+  <UsingTask TaskName="DownloadFile" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v12.0.dll">
+    <ParameterGroup>
+      <Address ParameterType="System.String" Required="true" />
+      <FileName ParameterType="System.String" Required="true" />
+    </ParameterGroup>
+    <Task>
+      <Reference Include="System" />
+      <Reference Include="System.IO" />
+      <Code Type="Fragment" Language="cs">
+        <![CDATA[
+            var directory = System.IO.Path.GetDirectoryName(FileName);
+            Directory.CreateDirectory(directory);
+
+            var tempFile = Path.Combine(directory, Path.GetRandomFileName());
+            var client = new System.Net.WebClient();
+            client.Proxy = System.Net.WebRequest.DefaultWebProxy;
+            if (client.Proxy != null) client.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
+            var tryCount = 1;
+            var maxTries = 3;
+
+            while (tryCount <= maxTries)
+            {
+                try
+                {
+                    Log.LogMessage("Attempting to download {0}...", Address);
+                    client.DownloadFile(Address, tempFile);
+                    break;
+                }
+                catch (System.Net.WebException e)
+                {
+                    tryCount++;
+                    if (tryCount > maxTries)
+                    {
+                        throw;
+                    }
+                    else
+                    {
+                        Log.LogMessage(MessageImportance.High, "Download failed, retrying: {0}", e.Message);
+                    }
+                }
+            }
+
+            try
+            {
+                if (!File.Exists(FileName))
+                    File.Move(tempFile, FileName);
+            }
+            finally
+            {
+                if (File.Exists(tempFile))
+                    File.Delete(tempFile);
+            }
+        ]]>
+      </Code>
+    </Task>
+  </UsingTask>
+
+  <!--
+    Use a semaphore file to determine the need to restore build tools to avoid conflicts with locked binaries.
+  -->
+  <PropertyGroup>
+    <BuildToolsSemaphore>$(ToolsDir)BuildTools.semaphore</BuildToolsSemaphore>
+  </PropertyGroup>
+
+  <!--
+    Needed to avoid the IntialTargets from having an Output which ends up getting
+    added to the output references when you have a project to project reference.
+  -->
+  <Target Name="_RestoreBuildToolsWrapper" DependsOnTargets="_RestoreBuildTools" />
+
+  <Target Name="_RestoreBuildTools"
+          Inputs="$(MSBuildThisFileDirectory)dir.props;$(SourceDir).nuget/packages.$(OsEnvironment).config"
+          Outputs="$(BuildToolsSemaphore)">
+    <Message Importance="High" Text="Restoring build tools..." />
+
+    <Copy Condition="Exists('$(NuGetCachedPath)')" SourceFiles="$(NuGetCachedPath)" DestinationFiles="$(NuGetToolPath)" SkipUnchangedFiles="true" />
+
+    <!-- Download latest nuget.exe -->
+    <DownloadFile FileName="$(NuGetToolPath)"
+                  Address="https://www.nuget.org/nuget.exe"
+                  Condition="!Exists('$(NuGetToolPath)') and '$(OsEnvironment)'=='Windows_NT'" />
+
+    <Exec Command="curl -sSL --create-dirs -o $(NuGetToolPath) https://api.nuget.org/downloads/nuget.exe"
+          Condition="!Exists('$(NuGetToolPath)') and '$(OsEnvironment)'=='Unix'" />
+
+    <PropertyGroup>
+      <_RestoreBuildToolsCommand>$(NugetRestoreCommand) "$(SourceDir).nuget/packages.$(OsEnvironment).config"</_RestoreBuildToolsCommand>
+    </PropertyGroup>
+
+    <!-- Restore build tools -->
+    <Exec Command="$(_RestoreBuildToolsCommand)" StandardOutputImportance="Low" />
+
+    <!-- Add DNU and Roslyn tool execute rights -->
+    <Exec Condition="'$(OsEnvironment)'=='Unix'"
+          Command="chmod a+x &quot;$(DnxPackageDir)/bin/dnu&quot;" />
+    <Exec Condition="'$(OsEnvironment)'=='Unix'"
+          Command="chmod a+x &quot;$(DnxPackageDir)/bin/dnx&quot;" />
+    <Exec Condition="'$(OsEnvironment)'=='Unix'"
+          Command="find '$(RoslynPackageDir)tools' -name &quot;*.exe&quot; -exec chmod &quot;+x&quot; '{}' ';'" />
+
+    <!--
+      Touch our semaphore file to ensure Inputs/Outputs comparison for this target will show that we're up to date.
+      Ignore failures in the unlikely, but possible, event that we hit this from two projects simultaneously.
+    -->
+    <Touch Files="$(BuildToolsSemaphore)"
+           ContinueOnError="WarnAndContinue"
+           AlwaysCreate="true"
+           ForceTouch="true" />
+
+    <Error Condition="'$(ErrorIfBuildToolsRestoredFromIndividualProject)'=='true'"
+           Text="The build tools package was just restored and so we cannot continue the build of an individual project because targets from the build tools package were not able to be imported. Please retry the build the individual project again." />
+  </Target>
+
+  <!-- Provide default targets which can be hooked onto or overridden as necessary -->
+  <Target Name="BuildAndTest" DependsOnTargets="Build;Test" />
+  <Target Name="RebuildAndTest" DependsOnTargets="Rebuild;Test" />
+  <Target Name="Test" />
+</Project>
diff --git a/dir.traversal.targets b/dir.traversal.targets
new file mode 100644
index 00000000000..ad5a7102b09
--- /dev/null
+++ b/dir.traversal.targets
@@ -0,0 +1,103 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+
+  <Target Name="BuildAllProjects">
+    <PropertyGroup>
+      <DefaultBuildAllTarget Condition="'$(DefaultBuildAllTarget)'==''">$(MSBuildProjectDefaultTargets)</DefaultBuildAllTarget>
+    </PropertyGroup>
+
+    <!-- To Serialize we use msbuild's batching functionality '%' to force it to batch all similar projects with the same identity 
+         however since the project names are unique it will essentially force each to run in its own batch -->
+    <MSBuild Targets="$(DefaultBuildAllTarget)"
+             Projects="@(Project)"
+             Condition="'$(SerializeProjects)'=='true'"
+             Properties="Dummy=%(Identity);DefaultBuildAllTarget=$(DefaultBuildAllTarget);BuildAllProjects=true"
+             ContinueOnError="ErrorAndContinue" />
+
+    <MSBuild Targets="$(DefaultBuildAllTarget)"
+             Projects="@(Project)"
+             Condition="'$(SerializeProjects)'!='true'"
+             Properties="DefaultBuildAllTarget=$(DefaultBuildAllTarget);BuildAllProjects=true"
+             BuildInParallel="true"
+             ContinueOnError="ErrorAndContinue" />
+
+    <!-- Given we ErrorAndContinue we need to propagate the error if the overall task failed -->
+    <Error Condition="'$(MSBuildLastTaskResult)'=='false'" />
+  </Target>
+
+  <Target Name="CleanAllProjects">
+    <PropertyGroup>
+      <DefaultCleanAllTarget Condition="'$(DefaultCleanAllTarget)'==''">Clean</DefaultCleanAllTarget>
+    </PropertyGroup>
+
+    <!-- To Serialize we use msbuild's batching functionality '%' to force it to batch all similar projects with the same identity 
+         however since the project names are unique it will essentially force each to run in its own batch -->
+    <MSBuild Targets="$(DefaultCleanAllTarget)"
+             Projects="@(Project)"
+             Condition="'$(SerializeProjects)'=='true'"
+             Properties="Dummy=%(Identity);CleanAllProjects=true"
+             ContinueOnError="ErrorAndContinue" />
+
+    <MSBuild Targets="$(DefaultCleanAllTarget)"
+             Projects="@(Project)"
+             Condition="'$(SerializeProjects)'!='true'"
+             Properties="CleanAllProjects=true"
+             BuildInParallel="true"
+             ContinueOnError="ErrorAndContinue" />
+
+    <!-- Given we ErrorAndContinue we need to propagate the error if the overall task failed -->
+    <Error Condition="'$(MSBuildLastTaskResult)'=='false'" />
+  </Target>
+
+  <Target Name="RestoreAllProjectPackages">
+    <Message Importance="High" Text="Restoring project packages..." />
+
+    <PropertyGroup>
+      <DefaultRestoreAllPackagesTarget Condition="'$(DefaultRestoreAllPackagesTarget)'==''">RestorePackages</DefaultRestoreAllPackagesTarget>
+    </PropertyGroup>
+
+    <!-- To Serialize we use msbuild's batching functionality '%' to force it to batch all similar projects with the same identity 
+      however since the project names are unique it will essentially force each to run in its own batch -->
+    <MSBuild Targets="$(DefaultRestoreAllPackagesTarget)"
+             Projects="@(Project)"
+             Condition="'$(SerializeProjects)'=='true'"
+             Properties="Dummy=%(Identity);RestoreAllPackages=true"
+             ContinueOnError="ErrorAndContinue" />
+
+    <MSBuild Targets="$(DefaultRestoreAllPackagesTarget)"
+             Projects="@(Project)"
+             Condition="'$(SerializeProjects)'!='true'"
+             Properties="RestoreAllPackages=true"
+             BuildInParallel="true"
+             ContinueOnError="ErrorAndContinue" />
+
+    <!-- Given we ErrorAndContinue we need to propagate the error if the overall task failed -->
+    <Error Condition="'$(MSBuildLastTaskResult)'=='false'" />
+  </Target>
+
+  <PropertyGroup>
+    <TraversalBuildDependsOn>
+      BuildAllProjects;
+      $(TraversalBuildDependsOn);
+    </TraversalBuildDependsOn>
+
+    <TraversalCleanDependsOn>
+      CleanAllProjects;
+      $(TraversalCleanDependsOn);
+    </TraversalCleanDependsOn>
+
+    <TraversalRestorePackagesDependsOn>
+      RestoreAllProjectPackages;
+      $(TraversalRestorePackagesDependsOn)
+    </TraversalRestorePackagesDependsOn>
+  </PropertyGroup>
+
+  <Target Name="Build" DependsOnTargets="$(TraversalBuildDependsOn)" />
+
+  <Target Name="Clean" DependsOnTargets="$(TraversalCleanDependsOn)" />
+
+  <Target Name="Rebuild" DependsOnTargets="Clean;Build" />
+
+  <Target Name="RestorePackages" DependsOnTargets="$(TraversalRestorePackagesDependsOn)" />
+
+</Project>
\ No newline at end of file
diff --git a/src/.nuget/packages.Unix.config b/src/.nuget/packages.Unix.config
new file mode 100644
index 00000000000..78be606fc1e
--- /dev/null
+++ b/src/.nuget/packages.Unix.config
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.DotNet.BuildTools" version="1.0.25-prerelease-00095" />
+  <package id="Microsoft.DotNet.BuildTools.ApiTools" version="1.0.0-prerelease" />
+  <package id="dnx-mono" version="1.0.0-beta7" />
+  <package id="Microsoft.Net.ToolsetCompilers" version="1.0.0-rc3-20150510-01" />
+  <package id="Microsoft.Build.Mono.Debug" version="14.1.0.0-prerelease" />
+</packages>
diff --git a/src/.nuget/packages.Windows_NT.config b/src/.nuget/packages.Windows_NT.config
new file mode 100644
index 00000000000..5c327381f5a
--- /dev/null
+++ b/src/.nuget/packages.Windows_NT.config
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.DotNet.BuildTools" version="1.0.25-prerelease-00095" />
+  <package id="dnx-coreclr-win-x86" version="1.0.0-beta7" />
+</packages>
diff --git a/src/BuildValues.props b/src/BuildValues.props
new file mode 100644
index 00000000000..cfa9faaa959
--- /dev/null
+++ b/src/BuildValues.props
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <!--
+      the value of BuildNumber must be numeric and contain enough
+      leading zeroes to satisfy a 16-bit integer in base-10 format.  this
+      is needed because SemVer v1 performs a lexical comparison of the
+      prerelease version number and without the leading zeroes foo-20 is
+      smaller than foo-4.
+    -->
+    <RevisionNumber>00001</RevisionNumber>
+  </PropertyGroup>
+</Project>
\ No newline at end of file
diff --git a/src/NuGet.config b/src/NuGet.config
new file mode 100644
index 00000000000..2aeccd78e20
--- /dev/null
+++ b/src/NuGet.config
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <!-- NOTE: Leave this file here and keep it in sync with list in dir.props. -->
+  <!-- The command-line doesn't need it, but the IDE does.                    -->
+  <packageSources>
+    <clear/>
+    <add key="myget.org dotnet-core" value="https://www.myget.org/F/dotnet-core/" />
+    <add key="myget.org dotnet-coreclr" value="https://www.myget.org/F/dotnet-coreclr/" />
+    <add key="myget.org dotnet-corefxtestdata" value="https://www.myget.org/F/dotnet-corefxtestdata/" />
+    <add key="myget.org dotnet-buildtools" value="https://www.myget.org/F/dotnet-buildtools/" />
+    <add key="nuget.org" value="https://www.nuget.org/api/v2/" />
+  </packageSources>
+  <config>
+    <add key="repositoryPath" value="..\packages" />
+  </config>
+</configuration>
diff --git a/src/TypeSystem.Ecma/src/TypeSystem.Ecma.csproj b/src/TypeSystem.Ecma/src/TypeSystem.Ecma.csproj
new file mode 100644
index 00000000000..de29f0d3198
--- /dev/null
+++ b/src/TypeSystem.Ecma/src/TypeSystem.Ecma.csproj
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{05F88F48-EF79-4866-8CAF-870BD1949196}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Internal.TypeSystem.Ecma</RootNamespace>
+    <AssemblyName>TypeSystem.Ecma</AssemblyName>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <FileAlignment>512</FileAlignment>
+    <CLSCompliant>false</CLSCompliant>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>TRACE;DEBUG</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="..\..\TypeSystem\src\Ecma\EcmaField.cs" />
+    <Compile Include="..\..\TypeSystem\src\Ecma\EcmaGenericParameter.cs" />
+    <Compile Include="..\..\TypeSystem\src\Ecma\EcmaMethod.cs" />
+    <Compile Include="..\..\TypeSystem\src\Ecma\EcmaModule.cs" />
+    <Compile Include="..\..\TypeSystem\src\Ecma\EcmaSignatureParser.cs" />
+    <Compile Include="..\..\TypeSystem\src\Ecma\EcmaType.cs" />
+    <Compile Include="..\..\TypeSystem\src\Ecma\IMetadataStringDecoderProvider.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\TypeSystem\src\TypeSystem.csproj">
+      <Project>{dd5b6baa-d41a-4a6e-9e7d-83060f394b10}</Project>
+      <Name>TypeSystem</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.json" />
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
\ No newline at end of file
diff --git a/src/TypeSystem.Ecma/src/project.json b/src/TypeSystem.Ecma/src/project.json
new file mode 100644
index 00000000000..cb9858b5891
--- /dev/null
+++ b/src/TypeSystem.Ecma/src/project.json
@@ -0,0 +1,22 @@
+{
+  "dependencies": {
+    "System.Runtime": "4.0.0",
+    "System.Resources.ResourceManager": "4.0.0",
+    "System.Reflection.Primitives": "4.0.0",
+    "System.Diagnostics.Debug": "4.0.0",
+    "System.IO": "4.0.0",
+    "System.Collections.Immutable": "1.1.37",
+    "System.Collections": "4.0.0",
+    "System.Text.Encoding": "4.0.0",
+    "System.Runtime.InteropServices": "4.0.0",
+    "System.Reflection": "4.0.0",
+    "System.Runtime.Extensions": "4.0.0",
+    "System.Threading": "4.0.0",
+    "System.Text.Encoding.Extensions": "4.0.0",
+    "System.Reflection.Extensions": "4.0.0",
+    "System.Reflection.Metadata": "1.0.22"
+  },
+  "frameworks": {
+    "dnxcore50": {}
+  }
+}
\ No newline at end of file
diff --git a/src/TypeSystem.Ecma/src/project.lock.json b/src/TypeSystem.Ecma/src/project.lock.json
new file mode 100644
index 00000000000..f62beaf55a7
--- /dev/null
+++ b/src/TypeSystem.Ecma/src/project.lock.json
@@ -0,0 +1,979 @@
+{
+  "locked": false,
+  "version": 1,
+  "targets": {
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+      "System.Linq/4.0.0": {
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+          "ref/dotnet/System.Reflection.Extensions.dll": {}
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+          "lib/dotnet/System.Reflection.Metadata.dll": {}
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+        "System.Collections.nuspec"
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new file mode 100644
index 00000000000..97236824c0d
--- /dev/null
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+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{DD5B6BAA-D41A-4A6E-9E7D-83060F394B10}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <RootNamespace>Internal.TypeSystem</RootNamespace>
+    <AssemblyName>TypeSystem</AssemblyName>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <FileAlignment>512</FileAlignment>
+    <CLSCompliant>false</CLSCompliant>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>TRACE;DEBUG</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
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+    <DebugType>pdbonly</DebugType>
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+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="Common\AlignmentHelper.cs" />
+    <Compile Include="Common\ArrayType.cs" />
+    <Compile Include="Common\ByRefType.cs" />
+    <Compile Include="Common\FieldForInstantiatedType.cs" />
+    <Compile Include="Common\FieldLayout.cs" />
+    <Compile Include="Common\InstantiatedMethod.cs" />
+    <Compile Include="Common\InstantiatedType.cs" />
+    <Compile Include="Common\MetadataType.cs" />
+    <Compile Include="Common\MethodForInstantiatedType.cs" />
+    <Compile Include="Common\ParameterizedType.cs" />
+    <Compile Include="Common\PointerType.cs" />
+    <Compile Include="Common\SignatureVariable.cs" />
+    <Compile Include="Common\TargetDetails.cs" />
+    <Compile Include="Common\TypeCast.cs" />
+    <Compile Include="Common\TypeFlags.cs" />
+    <Compile Include="Common\TypeHashingAlgorithms.cs" />
+    <Compile Include="Common\TypeSystemContext.cs" />
+    <Compile Include="Common\TypeSystemHelpers.cs" />
+    <Compile Include="Common\WellKnownType.cs" />
+    <Compile Include="Common\FieldDesc.cs" />
+    <Compile Include="Common\MethodDesc.cs" />
+    <Compile Include="Common\TypeDesc.cs" />
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new file mode 100644
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+        "ref/dotnet/ja/System.Threading.Tasks.xml",
+        "ref/dotnet/ko/System.Threading.Tasks.xml",
+        "ref/dotnet/ru/System.Threading.Tasks.xml",
+        "ref/dotnet/System.Threading.Tasks.dll",
+        "ref/dotnet/System.Threading.Tasks.xml",
+        "ref/dotnet/zh-hans/System.Threading.Tasks.xml",
+        "ref/dotnet/zh-hant/System.Threading.Tasks.xml",
+        "ref/MonoAndroid10/_._",
+        "ref/MonoTouch10/_._",
+        "ref/net45/_._",
+        "ref/netcore50/de/System.Threading.Tasks.xml",
+        "ref/netcore50/es/System.Threading.Tasks.xml",
+        "ref/netcore50/fr/System.Threading.Tasks.xml",
+        "ref/netcore50/it/System.Threading.Tasks.xml",
+        "ref/netcore50/ja/System.Threading.Tasks.xml",
+        "ref/netcore50/ko/System.Threading.Tasks.xml",
+        "ref/netcore50/ru/System.Threading.Tasks.xml",
+        "ref/netcore50/System.Threading.Tasks.dll",
+        "ref/netcore50/System.Threading.Tasks.xml",
+        "ref/netcore50/zh-hans/System.Threading.Tasks.xml",
+        "ref/netcore50/zh-hant/System.Threading.Tasks.xml",
+        "ref/win8/_._",
+        "ref/wp80/_._",
+        "ref/wpa81/_._",
+        "ref/xamarinios10/_._",
+        "ref/xamarinmac20/_._",
+        "System.Threading.Tasks.4.0.0.nupkg",
+        "System.Threading.Tasks.4.0.0.nupkg.sha512",
+        "System.Threading.Tasks.nuspec"
+      ]
+    }
+  },
+  "projectFileDependencyGroups": {
+    "": [
+      "System.Runtime >= 4.0.0",
+      "System.Resources.ResourceManager >= 4.0.0",
+      "System.Reflection.Primitives >= 4.0.0",
+      "System.Diagnostics.Debug >= 4.0.0",
+      "System.IO >= 4.0.0",
+      "System.Collections.Immutable >= 1.1.37",
+      "System.Collections >= 4.0.0",
+      "System.Text.Encoding >= 4.0.0",
+      "System.Runtime.InteropServices >= 4.0.0",
+      "System.Reflection >= 4.0.0",
+      "System.Runtime.Extensions >= 4.0.0",
+      "System.Threading >= 4.0.0",
+      "System.Text.Encoding.Extensions >= 4.0.0",
+      "System.Reflection.Extensions >= 4.0.0"
+    ],
+    "DNXCore,Version=v5.0": []
+  }
+}
\ No newline at end of file
diff --git a/src/dir.props b/src/dir.props
new file mode 100644
index 00000000000..c79dd80eb75
--- /dev/null
+++ b/src/dir.props
@@ -0,0 +1,3 @@
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\dir.props" />
+</Project>
diff --git a/src/dir.targets b/src/dir.targets
new file mode 100644
index 00000000000..f3bc0857171
--- /dev/null
+++ b/src/dir.targets
@@ -0,0 +1,21 @@
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ErrorIfBuildToolsRestoredFromIndividualProject Condition="!Exists('$(ToolsDir)')">true</ErrorIfBuildToolsRestoredFromIndividualProject>
+  </PropertyGroup>
+
+  <Import Project="..\dir.targets" />
+
+  <!-- Returns the assembly version of the project for consumption
+       by the NuGet package generation -->
+  <Target Name="GetAssemblyVersion"
+          Returns="$(AssemblyVersion)"/>
+
+  <!-- Returns the generated documentation file for consumption
+       by the NuGet package generation -->
+  <Target Name="GetDocumentationFile"
+          Returns="$(DocumentationFile)"/>
+
+  <Import Project="$(ToolsDir)Build.Common.targets" Condition="Exists('$(ToolsDir)Build.Common.targets')" />
+  <Import Project="..\override.targets" Condition="Exists('..\override.targets')"/>
+
+</Project>
diff --git a/src/dirs.proj b/src/dirs.proj
new file mode 100644
index 00000000000..f710e44ea83
--- /dev/null
+++ b/src/dirs.proj
@@ -0,0 +1,41 @@
+<Project ToolsVersion="12.0" DefaultTargets="BuildAndTest" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="dir.props" />
+  <Import Project="BuildValues.props" />
+
+  <ItemGroup>
+    <Project Include="*\src\*.csproj" Exclude="@(ExcludeProjects)" />
+    <Project Include="*\src\*.vbproj" Condition="'$(IncludeVbProjects)'!='false'" Exclude="@(ExcludeProjects)" />
+    <Project Include="*\test*\**\*.csproj" Exclude="@(ExcludeProjects)" />
+    <Project Include="*\test*\**\*.vbproj" Condition="'$(IncludeVbProjects)'!='false'" Exclude="@(ExcludeProjects)" />
+  </ItemGroup>
+
+  <Import Project="..\dir.targets" />
+
+  <Import Project="..\dir.traversal.targets" />
+
+  <Import Project="$(ToolsDir)packages.targets" Condition="Exists('$(ToolsDir)packages.targets') and '$(ImportGetNuGetPackageVersions)' != 'false'" />
+  <Import Project="$(ToolsDir)UpdateBuildValues.targets" Condition="Exists('$(ToolsDir)UpdateBuildValues.targets')" />
+
+  <PropertyGroup Condition="Exists('$(ToolsDir)packages.targets') and '$(ImportGetNuGetPackageVersions)' != 'false'">
+    <TraversalBuildDependsOn>
+      $(TraversalBuildDependsOn);
+      BuildPackages;
+    </TraversalBuildDependsOn>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <GenerateCodeCoverageReportForAll>true</GenerateCodeCoverageReportForAll>
+  </PropertyGroup>
+  <Import Project="$(ToolsDir)CodeCoverage.targets" Condition="Exists('$(ToolsDir)CodeCoverage.targets')" />
+  <Import Project="$(ToolsDir)PerfTesting.targets" Condition="Exists('$(ToolsDir)PerfTesting.targets')" />
+
+  <!-- When doing a traversal build restore the tools runtime before the traversal starts to avoid races --> 
+  <Import Project="$(ToolsDir)toolruntime.targets" Condition="Exists('$(ToolsDir)toolruntime.targets')" />
+  <PropertyGroup Condition="Exists('$(ToolsDir)toolruntime.targets')">
+    <TraversalBuildDependsOn>
+      EnsureBuildToolsRuntime;
+      $(TraversalBuildDependsOn)
+    </TraversalBuildDependsOn>
+  </PropertyGroup>
+
+</Project>