diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 8d7526c22842..d334de595cf3 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -17,6 +17,11 @@
https://github.com/dotnet/windowsdesktop
d5046afdd2d0e6234ae3fc5bd4ae878594079cc7
+
+ https://github.com/dotnet/llvm-project
+ 75e182c26dbf5d9f8ccca0ac68ee63b0bebb17b8
+
+
https://github.com/dotnet/runtime
f52d8c59bb49360eb2cbeeb863c5856ebd62adda
diff --git a/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build.yml b/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build.yml
index 2cf4ad6288ce..32d8df03b737 100644
--- a/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build.yml
+++ b/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build.yml
@@ -12,7 +12,7 @@ parameters:
# The following parameters aren't expected to be passed in rather they are used for encapsulation
# -----------------------------------------------------------------------------------------------
- centOS7Container: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-7-source-build-20210714125450-5d87b80
+ centOSStream8Container: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream8-20220809204800-17a4aab
centOS8Container: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-8-source-build-20211118190102-9355e7b
centOSStream9Container: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream9-20220107135047-4cd394c
debian9Container: mcr.microsoft.com/dotnet-buildtools/prereqs:debian-stretch-20211001171226-047508b
@@ -38,16 +38,16 @@ jobs:
excludeSdkContentTests: true
installerBuildResourceId: ${{ parameters.installerBuildResourceId }}
matrix:
- CentOS7-Online:
+ CentOSStream8-Online:
_BootstrapPrep: false
- _Container: ${{ parameters.centOS7Container }}
+ _Container: ${{ parameters.centOSStream8Container }}
_EnablePoison: false
_ExcludeOmniSharpTests: true
_RunOnline: true
${{ if ne(variables['Build.Reason'], 'PullRequest') }}:
- CentOS7-Offline:
+ CentOSStream8-Offline:
_BootstrapPrep: false
- _Container: ${{ parameters.centOS7Container }}
+ _Container: ${{ parameters.centOSStream8Container }}
_EnablePoison: false
_ExcludeOmniSharpTests: true
_RunOnline: false
diff --git a/src/SourceBuild/tarball/content/repos/known-good.proj b/src/SourceBuild/tarball/content/repos/known-good.proj
index 85bd5f8e64d9..7d907a9f177d 100644
--- a/src/SourceBuild/tarball/content/repos/known-good.proj
+++ b/src/SourceBuild/tarball/content/repos/known-good.proj
@@ -33,6 +33,7 @@
+
diff --git a/src/SourceBuild/tarball/content/repos/llvm-project.proj b/src/SourceBuild/tarball/content/repos/llvm-project.proj
new file mode 100644
index 000000000000..c2c23cba4cad
--- /dev/null
+++ b/src/SourceBuild/tarball/content/repos/llvm-project.proj
@@ -0,0 +1,21 @@
+
+
+
+
+ $(ProjectDirectory)build$(ShellExtension) $(StandardSourceBuildArgs)
+
+ $(ProjectDirectory)global.json
+ $(ProjectDirectory)NuGet.config
+ false
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/src/SourceBuild/tarball/content/repos/runtime-portable.proj b/src/SourceBuild/tarball/content/repos/runtime-portable.proj
index 09b4625e9d29..6c3939492b3e 100644
--- a/src/SourceBuild/tarball/content/repos/runtime-portable.proj
+++ b/src/SourceBuild/tarball/content/repos/runtime-portable.proj
@@ -9,6 +9,7 @@
+
diff --git a/src/SourceBuild/tarball/content/repos/runtime.proj b/src/SourceBuild/tarball/content/repos/runtime.proj
index 59ea1d6fc3f0..04ff19ab1026 100644
--- a/src/SourceBuild/tarball/content/repos/runtime.proj
+++ b/src/SourceBuild/tarball/content/repos/runtime.proj
@@ -18,6 +18,7 @@
+
diff --git a/src/SourceBuild/tarball/patches/llvm-project/0001-Upgrade-to-an-MS.Build.Traversal-version-we-have-a-r.patch b/src/SourceBuild/tarball/patches/llvm-project/0001-Upgrade-to-an-MS.Build.Traversal-version-we-have-a-r.patch
new file mode 100644
index 000000000000..57846fba6367
--- /dev/null
+++ b/src/SourceBuild/tarball/patches/llvm-project/0001-Upgrade-to-an-MS.Build.Traversal-version-we-have-a-r.patch
@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Chris Rummel
+Date: Wed, 10 Aug 2022 13:44:31 -0500
+Subject: [PATCH] Upgrade to an MS.Build.Traversal version we have a ref
+ package for.
+
+Backport PR is https://github.com/dotnet/llvm-project/pull/241.
+
+---
+ global.json | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/global.json b/global.json
+index df77e9a199d6..19b99be1f71b 100644
+--- a/global.json
++++ b/global.json
+@@ -5,6 +5,6 @@
+ "msbuild-sdks": {
+ "Microsoft.DotNet.Arcade.Sdk": "7.0.0-beta.22367.1",
+ "Microsoft.DotNet.Helix.Sdk": "7.0.0-beta.22367.1",
+- "Microsoft.Build.Traversal": "2.0.2"
++ "Microsoft.Build.Traversal": "2.0.34"
+ }
+ }
diff --git a/src/SourceBuild/tarball/patches/llvm-project/0002-Update-for-new-MSBuild-warning.patch b/src/SourceBuild/tarball/patches/llvm-project/0002-Update-for-new-MSBuild-warning.patch
new file mode 100644
index 000000000000..62677c12d965
--- /dev/null
+++ b/src/SourceBuild/tarball/patches/llvm-project/0002-Update-for-new-MSBuild-warning.patch
@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Chris Rummel
+Date: Wed, 10 Aug 2022 21:30:49 -0500
+Subject: [PATCH] Update for new MSBuild warning.
+
+Backport PR: https://github.com/dotnet/llvm-project/pull/241.
+
+---
+ nuget/packages.builds | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/nuget/packages.builds b/nuget/packages.builds
+index a4d2bc03d454..85d860081e53 100644
+--- a/nuget/packages.builds
++++ b/nuget/packages.builds
+@@ -31,7 +31,7 @@
+
+
+
++ AdditionalProperties="%(ProjectReference.AdditionalProperties);FileVersion=$(FileVersion)" />
+
+
+
diff --git a/src/SourceBuild/tarball/patches/llvm-project/0003-Copy-license-form-LLVM-directory-to-root-directory-t.patch b/src/SourceBuild/tarball/patches/llvm-project/0003-Copy-license-form-LLVM-directory-to-root-directory-t.patch
new file mode 100644
index 000000000000..868911a22ff5
--- /dev/null
+++ b/src/SourceBuild/tarball/patches/llvm-project/0003-Copy-license-form-LLVM-directory-to-root-directory-t.patch
@@ -0,0 +1,298 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Chris Rummel
+Date: Wed, 10 Aug 2022 23:16:19 -0500
+Subject: [PATCH] Copy license form LLVM directory to root directory to satisfy
+ license checker.
+
+Backport PR: https://github.com/dotnet/llvm-project/pull/242.
+
+---
+ LICENSE.TXT | 279 ++++++++++++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 279 insertions(+)
+ create mode 100644 LICENSE.TXT
+
+diff --git a/LICENSE.TXT b/LICENSE.TXT
+new file mode 100644
+index 000000000000..fa6ac5400070
+--- /dev/null
++++ b/LICENSE.TXT
+@@ -0,0 +1,279 @@
++==============================================================================
++The LLVM Project is under the Apache License v2.0 with LLVM Exceptions:
++==============================================================================
++
++ Apache License
++ Version 2.0, January 2004
++ http://www.apache.org/licenses/
++
++ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
++
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++
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++ this list of conditions and the following disclaimers.
++
++ * Redistributions in binary form must reproduce the above copyright notice,
++ this list of conditions and the following disclaimers in the
++ documentation and/or other materials provided with the distribution.
++
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++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
++SOFTWARE.
++
diff --git a/src/SourceBuild/tarball/patches/llvm-project/0004-Add-SourceBuild.props.patch b/src/SourceBuild/tarball/patches/llvm-project/0004-Add-SourceBuild.props.patch
new file mode 100644
index 000000000000..02d7b7b616e3
--- /dev/null
+++ b/src/SourceBuild/tarball/patches/llvm-project/0004-Add-SourceBuild.props.patch
@@ -0,0 +1,26 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Chris Rummel
+Date: Thu, 11 Aug 2022 01:08:46 -0500
+Subject: [PATCH] Add SourceBuild.props.
+
+Backport PR: https://github.com/dotnet/llvm-project/pull/242.
+
+---
+ eng/SourceBuild.props | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+ create mode 100644 eng/SourceBuild.props
+
+diff --git a/eng/SourceBuild.props b/eng/SourceBuild.props
+new file mode 100644
+index 000000000000..93e2809599f6
+--- /dev/null
++++ b/eng/SourceBuild.props
+@@ -0,0 +1,8 @@
++
++
++
++ llvm-project
++ true
++
++
++