From 24f4cc689f63a4ebad8ed3d169270f690c16e6de Mon Sep 17 00:00:00 2001
From: Luca <681992+lukka@users.noreply.github.com>
Date: Mon, 16 Sep 2019 22:12:36 -0700
Subject: [PATCH 01/16] add azure-pipeline for x64, arm64, x86, arm

---
 .gitmodules                           |  4 ++
 azure-devops/install_msvc_preview.ps1 | 68 +++++++++++++++++++++++++++
 azure-devops/run_build.yml            | 51 ++++++++++++++++++++
 azure-pipelines.yml                   | 31 ++++++++----
 vcpkg                                 |  1 +
 vcpkg_windows.txt                     |  5 ++
 6 files changed, 150 insertions(+), 10 deletions(-)
 create mode 100644 .gitmodules
 create mode 100644 azure-devops/install_msvc_preview.ps1
 create mode 100644 azure-devops/run_build.yml
 create mode 160000 vcpkg
 create mode 100644 vcpkg_windows.txt

diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000000..915667ffe51
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "vcpkg"]
+	path = vcpkg
+	url = https://github.com/microsoft/vcpkg.git
+	fetchRecurseSubmodules = false
\ No newline at end of file
diff --git a/azure-devops/install_msvc_preview.ps1 b/azure-devops/install_msvc_preview.ps1
new file mode 100644
index 00000000000..2f0b5545cef
--- /dev/null
+++ b/azure-devops/install_msvc_preview.ps1
@@ -0,0 +1,68 @@
+$ErrorActionPreference = "Stop"
+
+Function InstallVS
+{
+    # Microsoft hosted agents do not have the required MSVC 14.23 for building MSVC STL. 
+    # This step installs MSVC 14.23, only on Microsoft hosted agents.
+
+  Param(
+    [String]$WorkLoads,
+    [String]$Sku,
+    [String]$VSBootstrapperURL)
+  $exitCode = -1
+  try
+  {
+    Write-Host "Downloading bootstrapper ..."
+    [string]$bootstrapperExe = Join-Path ${env:Temp} ([System.IO.Path]::GetRandomFileName() + ".exe")
+    Invoke-WebRequest -Uri $VSBootstrapperURL -OutFile $bootstrapperExe
+
+    $Arguments = ('/c', $bootstrapperExe, $WorkLoads, '--quiet', '--norestart', '--wait', '--nocache' )
+
+    Write-Host "Starting Install: $Arguments"
+    $process = Start-Process -FilePath cmd.exe -ArgumentList $Arguments -Wait -PassThru
+    $exitCode = $process.ExitCode
+
+    if ($exitCode -eq 0 -or $exitCode -eq 3010)
+    {
+      Write-Host -Object 'Installation successful!'
+    }
+    else
+    {
+      Write-Host -Object "Non zero exit code returned by the installation process : $exitCode."
+    }
+  }
+  catch
+  {
+    Write-Host -Object "Failed to install Visual Studio!"
+    Write-Host -Object $_.Exception.Message
+    exit $exitCode
+  }
+
+  exit $exitCode
+}
+
+# Invalidate the standard installation of VS on the hosted agent.
+Move-Item "C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/" "C:/Program Files (x86)/Microsoft Visual Studio/2019/nouse/" -Verbose
+
+$WorkLoads =  '--add Microsoft.VisualStudio.Component.UWP.VC.ARM64 ' + `
+              '--add Microsoft.VisualStudio.Component.VC.CLI.Support ' + `
+              '--add Microsoft.VisualStudio.Component.VC.Runtimes.ARM.Spectre ' + `
+              '--add Microsoft.VisualStudio.Component.VC.Runtimes.ARM64.Spectre ' + `
+              '--add Microsoft.VisualStudio.Component.VC.Runtimes.x86.x64.Spectre ' + `
+              '--add Microsoft.VisualStudio.Component.VC.TestAdapterForBoostTest ' + `
+              '--add Microsoft.VisualStudio.Component.VC.TestAdapterForGoogleTest ' + `
+              '--add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 ' + `
+              '--add Microsoft.VisualStudio.Component.VC.Tools.ARM64 ' + `
+              '--add Microsoft.VisualStudio.Component.VC.Tools.ARM ' + `
+              '--add Microsoft.VisualStudio.Component.Windows10SDK.18362 '
+     
+$ReleaseInPath = 'Preview'
+$Sku = 'Enterprise'
+$VSBootstrapperURL = 'https://aka.ms/vs/16/pre/vs_buildtools.exe'
+
+$ErrorActionPreference = 'Stop'
+
+# Install VS
+$exitCode = InstallVS -WorkLoads $WorkLoads -Sku $Sku -VSBootstrapperURL $VSBootstrapperURL
+
+exit $exitCode
\ No newline at end of file
diff --git a/azure-devops/run_build.yml b/azure-devops/run_build.yml
new file mode 100644
index 00000000000..3e9d6693e1d
--- /dev/null
+++ b/azure-devops/run_build.yml
@@ -0,0 +1,51 @@
+parameters:
+  targetPlatform: 'x64'
+
+jobs:
+- job: vs2019_hosted_${{ parameters.targetPlatform }}
+  pool:
+    #name: Hosted Windows 2019 with VS2019
+    name: STL
+
+  variables:
+    vcpkgLocation: '$(Build.SourcesDirectory)/vcpkg'
+    vcpkgResponseFile: $(Build.SourcesDirectory)/vcpkg_windows.txt
+  steps:
+    - checkout: self
+      submodules: recursive
+    - task: BatchScript@1
+      inputs:
+        filename: 'azure-devops/enforce-clang-format.cmd'
+        failOnStandardError: true
+        displayName: 'Enforce clang-format'
+      # Install VS 2019 preview on Microsoft Hosted Agents only.
+    - task: PowerShell@2
+      displayName: 'Install MSVC preview'
+      condition: or(contains(variables['Agent.Name'], 'Azure Pipelines'), contains(variables['Agent.Name'], 'Hosted Agent'))
+      inputs:
+        targetType: filePath
+        filePath: $(Build.SourcesDirectory)/azure-devops/install_msvc_preview.ps1
+    - task: CacheBeta@0
+      displayName: Cache vcpkg
+      inputs:
+        key: $(vcpkgResponseFile) | $(Build.SourcesDirectory)/.git/modules/vcpkg/HEAD
+        path: '$(vcpkgLocation)'
+    - task: run-vcpkg@0
+      displayName: 'Run vcpkg to install boost-build'
+      inputs:
+        vcpkgArguments: 'boost-build:x86-windows'
+        vcpkgDirectory: '$(vcpkgLocation)'
+    - task: run-vcpkg@0
+      displayName: 'Run vcpkg'
+      inputs:
+        vcpkgArguments: '@$(vcpkgResponseFile)'
+        vcpkgDirectory: '$(vcpkgLocation)'
+        vcpkgTriplet: ${{ parameters.targetPlatform }}-windows
+    - task: run-cmake@0
+      displayName: 'Run CMake with Ninja'
+      enabled: true
+      inputs:
+        cmakeListsTxtPath: 'CMakeSettings.json'
+        useVcpkgToolchainFile: true
+        configurationRegexFilter: '.*${{ parameters.targetPlatform }}.*'
+        buildDirectory: $(Build.ArtifactStagingDirectory)/${{ parameters.targetPlatform }}
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index c0ccde8d09e..331bcbf887e 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -1,10 +1,21 @@
-# Copyright (c) Microsoft Corporation.
-# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-pool: 'STL'
-
-steps:
-- task: BatchScript@1
-  inputs:
-    filename: 'azure-devops/enforce-clang-format.cmd'
-    failOnStandardError: true
-    displayName: 'Enforce clang-format'
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+# Build STL targeting x64, arm64, x86, arm.
+
+jobs:
+- template: azure-devops/run_build.yml
+  parameters:
+    targetPlatform: x64
+
+- template: azure-devops/run_build.yml
+  parameters:
+    targetPlatform: arm64
+
+- template: azure-devops/run_build.yml
+  parameters:
+    targetPlatform: x86
+
+- template: azure-devops/run_build.yml
+  parameters:
+    targetPlatform: arm
diff --git a/vcpkg b/vcpkg
new file mode 160000
index 00000000000..8413b901d71
--- /dev/null
+++ b/vcpkg
@@ -0,0 +1 @@
+Subproject commit 8413b901d71ad2a1807f3bcb4dedc0835efed541
diff --git a/vcpkg_windows.txt b/vcpkg_windows.txt
new file mode 100644
index 00000000000..0d2a4c51595
--- /dev/null
+++ b/vcpkg_windows.txt
@@ -0,0 +1,5 @@
+boost-build:x86-windows
+boost-math:x64-windows
+boost-math:x86-windows
+boost-math:arm-windows
+boost-math:arm64-windows
\ No newline at end of file

From 56e7e25e9efb7f5bc67fa9f8350f9d6496fb48f9 Mon Sep 17 00:00:00 2001
From: Luca <681992+lukka@users.noreply.github.com>
Date: Tue, 24 Sep 2019 20:19:23 -0700
Subject: [PATCH 02/16] disable the git status command that is failing

---
 azure-devops/enforce-clang-format.cmd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/azure-devops/enforce-clang-format.cmd b/azure-devops/enforce-clang-format.cmd
index e229c7ec398..2e59b338f03 100644
--- a/azure-devops/enforce-clang-format.cmd
+++ b/azure-devops/enforce-clang-format.cmd
@@ -3,4 +3,4 @@
 @echo off
 clang-format -style=file -i stl/inc/* stl/inc/cvt/* stl/inc/experimental/* stl/src/* 2>&1
 echo If your build fails here, you need to format the following files with clang-format 8.0.1.
-git status --porcelain 1>&2
+rem git status --porcelain 1>&2

From 21b74334ab6ec3338b628469236d02e7096b212d Mon Sep 17 00:00:00 2001
From: luca <681992+lukka@users.noreply.github.com>
Date: Tue, 24 Sep 2019 21:10:48 -0700
Subject: [PATCH 03/16] add /vcpkg/ to .gitignore. re-enable "git status" in
 enforce-clang-format.cmd

---
 .gitignore                            | 1 +
 azure-devops/enforce-clang-format.cmd | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 2dd12774b93..cb9e9d65781 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 .vs/
 .vscode/
 /out/
+/vcpkg/
diff --git a/azure-devops/enforce-clang-format.cmd b/azure-devops/enforce-clang-format.cmd
index 2e59b338f03..e229c7ec398 100644
--- a/azure-devops/enforce-clang-format.cmd
+++ b/azure-devops/enforce-clang-format.cmd
@@ -3,4 +3,4 @@
 @echo off
 clang-format -style=file -i stl/inc/* stl/inc/cvt/* stl/inc/experimental/* stl/src/* 2>&1
 echo If your build fails here, you need to format the following files with clang-format 8.0.1.
-rem git status --porcelain 1>&2
+git status --porcelain 1>&2

From e041c7e1b7d58ecf38757d7ace75536ba69cf888 Mon Sep 17 00:00:00 2001
From: luca <681992+lukka@users.noreply.github.com>
Date: Tue, 24 Sep 2019 21:14:06 -0700
Subject: [PATCH 04/16] add newline to .gitmodules

---
 .gitmodules | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.gitmodules b/.gitmodules
index 915667ffe51..e334d569546 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "vcpkg"]
 	path = vcpkg
 	url = https://github.com/microsoft/vcpkg.git
-	fetchRecurseSubmodules = false
\ No newline at end of file
+	fetchRecurseSubmodules = false

From 6106766450529fcd7a5e392d58b24fa3e6a357a2 Mon Sep 17 00:00:00 2001
From: luca <681992+lukka@users.noreply.github.com>
Date: Tue, 24 Sep 2019 21:18:17 -0700
Subject: [PATCH 05/16] disable git-status in clang-format script

---
 azure-devops/enforce-clang-format.cmd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/azure-devops/enforce-clang-format.cmd b/azure-devops/enforce-clang-format.cmd
index e229c7ec398..2e59b338f03 100644
--- a/azure-devops/enforce-clang-format.cmd
+++ b/azure-devops/enforce-clang-format.cmd
@@ -3,4 +3,4 @@
 @echo off
 clang-format -style=file -i stl/inc/* stl/inc/cvt/* stl/inc/experimental/* stl/src/* 2>&1
 echo If your build fails here, you need to format the following files with clang-format 8.0.1.
-git status --porcelain 1>&2
+rem git status --porcelain 1>&2

From 3fa17d373a16eef3fde28009e5e6d94425560ec9 Mon Sep 17 00:00:00 2001
From: luca <681992+lukka@users.noreply.github.com>
Date: Tue, 24 Sep 2019 21:33:37 -0700
Subject: [PATCH 06/16] remove useless workloads from  VS installation script

---
 azure-devops/install_msvc_preview.ps1 | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/azure-devops/install_msvc_preview.ps1 b/azure-devops/install_msvc_preview.ps1
index 2f0b5545cef..d7843480a5c 100644
--- a/azure-devops/install_msvc_preview.ps1
+++ b/azure-devops/install_msvc_preview.ps1
@@ -44,13 +44,10 @@ Function InstallVS
 # Invalidate the standard installation of VS on the hosted agent.
 Move-Item "C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/" "C:/Program Files (x86)/Microsoft Visual Studio/2019/nouse/" -Verbose
 
-$WorkLoads =  '--add Microsoft.VisualStudio.Component.UWP.VC.ARM64 ' + `
-              '--add Microsoft.VisualStudio.Component.VC.CLI.Support ' + `
+$WorkLoads =  '--add Microsoft.VisualStudio.Component.VC.CLI.Support ' + `
               '--add Microsoft.VisualStudio.Component.VC.Runtimes.ARM.Spectre ' + `
               '--add Microsoft.VisualStudio.Component.VC.Runtimes.ARM64.Spectre ' + `
               '--add Microsoft.VisualStudio.Component.VC.Runtimes.x86.x64.Spectre ' + `
-              '--add Microsoft.VisualStudio.Component.VC.TestAdapterForBoostTest ' + `
-              '--add Microsoft.VisualStudio.Component.VC.TestAdapterForGoogleTest ' + `
               '--add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 ' + `
               '--add Microsoft.VisualStudio.Component.VC.Tools.ARM64 ' + `
               '--add Microsoft.VisualStudio.Component.VC.Tools.ARM ' + `

From e4b5b69b2191f93affb3797b5488dc31c1c5ab5b Mon Sep 17 00:00:00 2001
From: luca <681992+lukka@users.noreply.github.com>
Date: Tue, 24 Sep 2019 21:34:42 -0700
Subject: [PATCH 07/16] name jobs as platform's name remove commented code in
 yml

---
 azure-devops/run_build.yml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/azure-devops/run_build.yml b/azure-devops/run_build.yml
index 3e9d6693e1d..12ccabb17dc 100644
--- a/azure-devops/run_build.yml
+++ b/azure-devops/run_build.yml
@@ -2,9 +2,8 @@ parameters:
   targetPlatform: 'x64'
 
 jobs:
-- job: vs2019_hosted_${{ parameters.targetPlatform }}
+- job: ${{ parameters.targetPlatform }}
   pool:
-    #name: Hosted Windows 2019 with VS2019
     name: STL
 
   variables:

From 3adeea0b575ab4505dd81fe852f1efa4234a9db2 Mon Sep 17 00:00:00 2001
From: Billy Robert O'Neal III <bion@microsoft.com>
Date: Tue, 24 Sep 2019 21:50:25 -0700
Subject: [PATCH 08/16] Attempt to fix clang-format verification a different
 way.

---
 .gitignore                            | 1 -
 azure-devops/enforce-clang-format.cmd | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index cb9e9d65781..2dd12774b93 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,3 @@
 .vs/
 .vscode/
 /out/
-/vcpkg/
diff --git a/azure-devops/enforce-clang-format.cmd b/azure-devops/enforce-clang-format.cmd
index 2e59b338f03..d1f8e1f949a 100644
--- a/azure-devops/enforce-clang-format.cmd
+++ b/azure-devops/enforce-clang-format.cmd
@@ -3,4 +3,4 @@
 @echo off
 clang-format -style=file -i stl/inc/* stl/inc/cvt/* stl/inc/experimental/* stl/src/* 2>&1
 echo If your build fails here, you need to format the following files with clang-format 8.0.1.
-rem git status --porcelain 1>&2
+git status --porcelain stl 1>&2

From 63d5a19a6a1ddaa3646e9ffa7dda5628846b91af Mon Sep 17 00:00:00 2001
From: Billy Robert O'Neal III <bion@microsoft.com>
Date: Tue, 24 Sep 2019 21:55:23 -0700
Subject: [PATCH 09/16] Remove displayName part that doesn't seem to have any
 effect.

---
 azure-devops/run_build.yml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/azure-devops/run_build.yml b/azure-devops/run_build.yml
index 12ccabb17dc..5f6c99049d3 100644
--- a/azure-devops/run_build.yml
+++ b/azure-devops/run_build.yml
@@ -16,7 +16,6 @@ jobs:
       inputs:
         filename: 'azure-devops/enforce-clang-format.cmd'
         failOnStandardError: true
-        displayName: 'Enforce clang-format'
       # Install VS 2019 preview on Microsoft Hosted Agents only.
     - task: PowerShell@2
       displayName: 'Install MSVC preview'

From eb8043565719525b3eab44707dfe6d669a87ddc4 Mon Sep 17 00:00:00 2001
From: Billy Robert O'Neal III <bion@microsoft.com>
Date: Tue, 24 Sep 2019 21:57:24 -0700
Subject: [PATCH 10/16] Attempt to only check clang-format on x86.

---
 azure-devops/run_build.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/azure-devops/run_build.yml b/azure-devops/run_build.yml
index 5f6c99049d3..afbf3576359 100644
--- a/azure-devops/run_build.yml
+++ b/azure-devops/run_build.yml
@@ -13,6 +13,7 @@ jobs:
     - checkout: self
       submodules: recursive
     - task: BatchScript@1
+      condition: eq('${{ parameters.targetPlatform }}', 'x86')
       inputs:
         filename: 'azure-devops/enforce-clang-format.cmd'
         failOnStandardError: true

From 0464ce7775b98d907421eeb12fe4aeeffd19eda2 Mon Sep 17 00:00:00 2001
From: Billy Robert O'Neal III <bion@microsoft.com>
Date: Wed, 25 Sep 2019 12:31:11 -0700
Subject: [PATCH 11/16] Add displayName back.

---
 azure-devops/run_build.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/azure-devops/run_build.yml b/azure-devops/run_build.yml
index afbf3576359..5f726de5a43 100644
--- a/azure-devops/run_build.yml
+++ b/azure-devops/run_build.yml
@@ -13,6 +13,7 @@ jobs:
     - checkout: self
       submodules: recursive
     - task: BatchScript@1
+      displayName: 'Enforce clang-format'
       condition: eq('${{ parameters.targetPlatform }}', 'x86')
       inputs:
         filename: 'azure-devops/enforce-clang-format.cmd'

From 44d4d316775dca2aee885c77b6fede45eb98d853 Mon Sep 17 00:00:00 2001
From: Billy Robert O'Neal III <bion@microsoft.com>
Date: Wed, 25 Sep 2019 15:28:41 -0700
Subject: [PATCH 12/16] Add newlines and license blocks, and remove Spectre
 libs.

---
 azure-devops/install_msvc_preview.ps1 | 13 ++++++-------
 azure-devops/run_build.yml            |  2 ++
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/azure-devops/install_msvc_preview.ps1 b/azure-devops/install_msvc_preview.ps1
index d7843480a5c..076b0649bda 100644
--- a/azure-devops/install_msvc_preview.ps1
+++ b/azure-devops/install_msvc_preview.ps1
@@ -1,9 +1,11 @@
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 $ErrorActionPreference = "Stop"
 
 Function InstallVS
 {
-    # Microsoft hosted agents do not have the required MSVC 14.23 for building MSVC STL. 
-    # This step installs MSVC 14.23, only on Microsoft hosted agents.
+    # Microsoft hosted agents do not have the required MSVC Preview for building MSVC STL.
+    # This step installs MSVC Preview, only on Microsoft hosted agents.
 
   Param(
     [String]$WorkLoads,
@@ -45,14 +47,11 @@ Function InstallVS
 Move-Item "C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/" "C:/Program Files (x86)/Microsoft Visual Studio/2019/nouse/" -Verbose
 
 $WorkLoads =  '--add Microsoft.VisualStudio.Component.VC.CLI.Support ' + `
-              '--add Microsoft.VisualStudio.Component.VC.Runtimes.ARM.Spectre ' + `
-              '--add Microsoft.VisualStudio.Component.VC.Runtimes.ARM64.Spectre ' + `
-              '--add Microsoft.VisualStudio.Component.VC.Runtimes.x86.x64.Spectre ' + `
               '--add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 ' + `
               '--add Microsoft.VisualStudio.Component.VC.Tools.ARM64 ' + `
               '--add Microsoft.VisualStudio.Component.VC.Tools.ARM ' + `
               '--add Microsoft.VisualStudio.Component.Windows10SDK.18362 '
-     
+
 $ReleaseInPath = 'Preview'
 $Sku = 'Enterprise'
 $VSBootstrapperURL = 'https://aka.ms/vs/16/pre/vs_buildtools.exe'
@@ -62,4 +61,4 @@ $ErrorActionPreference = 'Stop'
 # Install VS
 $exitCode = InstallVS -WorkLoads $WorkLoads -Sku $Sku -VSBootstrapperURL $VSBootstrapperURL
 
-exit $exitCode
\ No newline at end of file
+exit $exitCode
diff --git a/azure-devops/run_build.yml b/azure-devops/run_build.yml
index 5f726de5a43..7df65b8fb3f 100644
--- a/azure-devops/run_build.yml
+++ b/azure-devops/run_build.yml
@@ -1,3 +1,5 @@
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 parameters:
   targetPlatform: 'x64'
 

From ab4391ff3112788fc8e15af2c1acb1fbf39f98d9 Mon Sep 17 00:00:00 2001
From: Billy Robert O'Neal III <bion@microsoft.com>
Date: Wed, 25 Sep 2019 15:29:46 -0700
Subject: [PATCH 13/16] Deindent install preview comment

---
 azure-devops/run_build.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/azure-devops/run_build.yml b/azure-devops/run_build.yml
index 7df65b8fb3f..a8379bb5eae 100644
--- a/azure-devops/run_build.yml
+++ b/azure-devops/run_build.yml
@@ -20,9 +20,9 @@ jobs:
       inputs:
         filename: 'azure-devops/enforce-clang-format.cmd'
         failOnStandardError: true
-      # Install VS 2019 preview on Microsoft Hosted Agents only.
     - task: PowerShell@2
       displayName: 'Install MSVC preview'
+      # on "Hosted" agents only:
       condition: or(contains(variables['Agent.Name'], 'Azure Pipelines'), contains(variables['Agent.Name'], 'Hosted Agent'))
       inputs:
         targetType: filePath

From 3a5d74e31621d9129ad94b50adcb41e1bb0969b7 Mon Sep 17 00:00:00 2001
From: Luca <681992+lukka@users.noreply.github.com>
Date: Wed, 25 Sep 2019 16:22:17 -0700
Subject: [PATCH 14/16] cosmetic fixes

---
 azure-devops/install_msvc_preview.ps1 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/azure-devops/install_msvc_preview.ps1 b/azure-devops/install_msvc_preview.ps1
index 076b0649bda..51f3f7c647b 100644
--- a/azure-devops/install_msvc_preview.ps1
+++ b/azure-devops/install_msvc_preview.ps1
@@ -18,7 +18,7 @@ Function InstallVS
     [string]$bootstrapperExe = Join-Path ${env:Temp} ([System.IO.Path]::GetRandomFileName() + ".exe")
     Invoke-WebRequest -Uri $VSBootstrapperURL -OutFile $bootstrapperExe
 
-    $Arguments = ('/c', $bootstrapperExe, $WorkLoads, '--quiet', '--norestart', '--wait', '--nocache' )
+    $Arguments = ('/c', $bootstrapperExe, $WorkLoads, '--quiet', '--norestart', '--wait', '--nocache')
 
     Write-Host "Starting Install: $Arguments"
     $process = Start-Process -FilePath cmd.exe -ArgumentList $Arguments -Wait -PassThru
@@ -30,7 +30,7 @@ Function InstallVS
     }
     else
     {
-      Write-Host -Object "Non zero exit code returned by the installation process : $exitCode."
+      Write-Host -Object "Nonzero exit code returned by the installation process : $exitCode."
     }
   }
   catch

From 87912e804bf21306fc642d8f9cc583ab99f50e68 Mon Sep 17 00:00:00 2001
From: Billy Robert O'Neal III <bion@microsoft.com>
Date: Wed, 25 Sep 2019 17:02:23 -0700
Subject: [PATCH 15/16] Reorder platforms and add license to .gitmodules.

---
 .gitmodules         |  3 +++
 azure-pipelines.yml | 11 ++++++-----
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/.gitmodules b/.gitmodules
index e334d569546..00d25323985 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
 [submodule "vcpkg"]
 	path = vcpkg
 	url = https://github.com/microsoft/vcpkg.git
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 331bcbf887e..dacfeda7170 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -1,21 +1,22 @@
 # Copyright (c) Microsoft Corporation.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-# Build STL targeting x64, arm64, x86, arm.
+# Build STL targeting x86, x64, arm, arm64
 
 jobs:
 - template: azure-devops/run_build.yml
   parameters:
-    targetPlatform: x64
+    targetPlatform: x86
 
 - template: azure-devops/run_build.yml
   parameters:
-    targetPlatform: arm64
+    targetPlatform: x64
+
 
 - template: azure-devops/run_build.yml
   parameters:
-    targetPlatform: x86
+    targetPlatform: arm
 
 - template: azure-devops/run_build.yml
   parameters:
-    targetPlatform: arm
+    targetPlatform: arm64

From f77752085502228ddab38a17abd5f0bced53c094 Mon Sep 17 00:00:00 2001
From: Billy Robert O'Neal III <bion@microsoft.com>
Date: Wed, 25 Sep 2019 19:07:01 -0700
Subject: [PATCH 16/16] Stephan's nitpicks

---
 azure-pipelines.yml | 1 -
 vcpkg_windows.txt   | 4 ++--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index dacfeda7170..0ee01d6de5a 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -12,7 +12,6 @@ jobs:
   parameters:
     targetPlatform: x64
 
-
 - template: azure-devops/run_build.yml
   parameters:
     targetPlatform: arm
diff --git a/vcpkg_windows.txt b/vcpkg_windows.txt
index 0d2a4c51595..92889a0fe2a 100644
--- a/vcpkg_windows.txt
+++ b/vcpkg_windows.txt
@@ -1,5 +1,5 @@
 boost-build:x86-windows
-boost-math:x64-windows
 boost-math:x86-windows
+boost-math:x64-windows
 boost-math:arm-windows
-boost-math:arm64-windows
\ No newline at end of file
+boost-math:arm64-windows