From 9d23f7a98200742e2d0cbe98d376301959909997 Mon Sep 17 00:00:00 2001
From: Andrew Coates <30809111+acoates-ms@users.noreply.github.com>
Date: Wed, 16 Oct 2024 11:34:59 -0700
Subject: [PATCH] [0.74] Build arm64ec platform for desktop fabric dll (#13978)

* Build arm64ec platform for desktop fabric dll

* Change files

---------

Co-authored-by: React-Native-Windows Bot <53619745+rnbot@users.noreply.github.com>
---
 .ado/publish.yml                                 | 16 ++++++++++++----
 ...ows-517cb4e7-9eb3-490c-ba03-b7e303394065.json |  7 +++++++
 .../React.Windows.Desktop.DLL.vcxproj            |  7 ++++++-
 3 files changed, 25 insertions(+), 5 deletions(-)
 create mode 100644 change/react-native-windows-517cb4e7-9eb3-490c-ba03-b7e303394065.json

diff --git a/.ado/publish.yml b/.ado/publish.yml
index 91a4928988d..12c4aae68f2 100644
--- a/.ado/publish.yml
+++ b/.ado/publish.yml
@@ -70,6 +70,14 @@ parameters:
       BuildConfiguration: Release
       BuildPlatform: x86
       UseFabric: true
+    - Name: ARM64ECDebugFabric
+      BuildConfiguration: Debug
+      BuildPlatform: ARM64EC
+      UseFabric: true
+    - Name: ARM64ECReleaseFabric
+      BuildConfiguration: Release
+      BuildPlatform: ARM64EC
+      UseFabric: true
 
 - name: universalBuildMatrix
   type: object
@@ -529,14 +537,14 @@ extends:
                   configuration: Release
                 - platform: x86
                   configuration: Release
-                # - platform: ARM64EC
-                #   configuration: Release
+                - platform: ARM64EC
+                  configuration: Release
                 - platform: x64
                   configuration: Debug
                 - platform: x86
                   configuration: Debug
-                # - platform: ARM64EC
-                #   configuration: Debug
+                - platform: ARM64EC
+                  configuration: Debug
 
           templateContext:
             sdl:
diff --git a/change/react-native-windows-517cb4e7-9eb3-490c-ba03-b7e303394065.json b/change/react-native-windows-517cb4e7-9eb3-490c-ba03-b7e303394065.json
new file mode 100644
index 00000000000..520c4838543
--- /dev/null
+++ b/change/react-native-windows-517cb4e7-9eb3-490c-ba03-b7e303394065.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "Build arm64ec platform for desktop fabric dll",
+  "packageName": "react-native-windows",
+  "email": "53619745+rnbot@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}
diff --git a/vnext/Desktop.DLL/React.Windows.Desktop.DLL.vcxproj b/vnext/Desktop.DLL/React.Windows.Desktop.DLL.vcxproj
index 9ca1ac8bf9c..7e13b44916d 100644
--- a/vnext/Desktop.DLL/React.Windows.Desktop.DLL.vcxproj
+++ b/vnext/Desktop.DLL/React.Windows.Desktop.DLL.vcxproj
@@ -111,7 +111,12 @@
         %(AdditionalDependencies);
         Bcrypt.lib;
         Chakrart.lib;
-        Pathcch.lib
+        D2D1.lib;
+        D3D11.lib;
+        DWrite.lib;
+        Pathcch.lib;
+        ShCore.lib;
+        Uiautomationcore.lib
       </AdditionalDependencies>
       <DelayLoadDLLs>Chakra.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
     </Link>