[TrimmableTypeMap] Use Crc64 package naming by default with LowercaseCrc64 compatibility

.gdn/policheck/source.gdnsuppress

@@ -144,6 +144,38 @@
       ],
       "justification": "Reference to ffs(3) find first set bit function.",
       "createdDate": "2025-02-05 11:48:04Z"
+    },
+    "cccebaacfe4f8c7eae2d4d00c4d534d1f85ae79b11d53bf858c6243061ef7d69": {
+      "signature": "cccebaacfe4f8c7eae2d4d00c4d534d1f85ae79b11d53bf858c6243061ef7d69",
+      "memberOf": [
+        "default"
+      ],
+      "justification": "Verbatim GPLv3 license text in THIRD-PARTY-NOTICES.TXT (gnu/binutils).",
+      "createdDate": "2026-05-05 00:00:00Z"
+    },
+    "5c055f17206f60132ca8011955bd4ddcfe42a332341015b221e45d5a15d4e0af": {
+      "signature": "5c055f17206f60132ca8011955bd4ddcfe42a332341015b221e45d5a15d4e0af",
+      "memberOf": [
+        "default"
+      ],
+      "justification": "Verbatim GPLv3 license text in THIRD-PARTY-NOTICES.TXT (gnu/binutils).",
+      "createdDate": "2026-05-05 00:00:00Z"
+    },
+    "ed6b5cb1fe11577308dd5b137e106a12fed8e039c410a57d8580fb72b07a28a2": {
+      "signature": "ed6b5cb1fe11577308dd5b137e106a12fed8e039c410a57d8580fb72b07a28a2",
+      "memberOf": [
+        "default"
+      ],
+      "justification": "Verbatim GPLv3 license text in THIRD-PARTY-NOTICES.TXT (gnu/binutils).",
+      "createdDate": "2026-05-05 00:00:00Z"
+    },
+    "e281b9747a4a2f75cb24b67a65521526fc407ecd1cc2f2963a586ce507de3096": {
+      "signature": "e281b9747a4a2f75cb24b67a65521526fc407ecd1cc2f2963a586ce507de3096",
+      "memberOf": [
+        "default"
+      ],
+      "justification": "Verbatim GPLv3 license text in THIRD-PARTY-NOTICES.TXT (gnu/binutils).",
+      "createdDate": "2026-05-05 00:00:00Z"
     }
   }
 }

.github/skills/update-tpn/SKILL.md

@@ -0,0 +1,141 @@
+---
+name: update-tpn
+description: >-
+  Audit and update the THIRD-PARTY-NOTICES.TXT file. Use when the user asks to
+  "update TPNs", "audit third-party notices", "check third-party licenses",
+  or after adding/removing a dependency. Scans submodules, vendored code, NuGet
+  packages, and native libraries to ensure the TPN file is complete and accurate.
+---
+
+# Update Third-Party Notices
+
+Audit and regenerate the `THIRD-PARTY-NOTICES.TXT` file at the repo root.
+
+This file is checked in and shipped as-is in the product NuGet packages.
+There is no code generation step — this skill replaces the old xaprepare TPN infrastructure.
+
+## File Format
+
+The file uses the **MicrosoftOSS** header format:
+
+```
+xamarin-android
+
+THIRD - PARTY SOFTWARE NOTICES AND INFORMATION
+Do Not Translate or Localize
+
+This project incorporates components from the projects listed below.
+The original copyright notices and the licenses under which Microsoft
+received such components are set forth below.
+Microsoft reserves all rights not expressly granted herein, whether by
+implication, estoppel or otherwise.
+
+1.  name (url)
+2.  name (url)
+...
+
+%% name NOTICES AND INFORMATION BEGIN HERE
+==========================================
+<license text>
+
+==========================================
+END OF name NOTICES AND INFORMATION
+```
+
+Entries are sorted case-insensitively by name. Each entry has a numbered TOC line and a license section.
+
+## Audit Workflow
+
+### Step 1 — Inventory all dependencies
+
+Scan these sources to build a complete list of third-party dependencies:
+
+#### Git Submodules
+Read `.gitmodules` for all submodules. Current submodules and their license files:
+
+| Submodule | URL | License File |
+|-----------|-----|-------------|
+| Java.Interop | https://github.com/dotnet/java-interop | `external/Java.Interop/LICENSE` |
+| lz4 | https://github.com/dotnet/lz4 (fork of https://github.com/lz4/lz4) | `external/lz4/lib/LICENSE` |
+| xxHash | https://github.com/Cyan4973/xxHash | `external/xxHash/LICENSE` |
+| constexpr-xxh3 | https://github.com/chys87/constexpr-xxh3 | `external/constexpr-xxh3/LICENSE` |
+| robin-map | https://github.com/xamarin/robin-map (fork of https://github.com/Tessil/robin-map) | `external/robin-map/LICENSE` |
+| libunwind | https://github.com/libunwind/libunwind | `external/libunwind/LICENSE` |
+| xamarin-android-tools | https://github.com/dotnet/android-tools | (not a third-party dep) |
+| android-api-docs | https://github.com/dotnet/android-api-docs | (not a third-party dep) |
+| debugger-libs | https://github.com/mono/debugger-libs | (not a third-party dep — internal) |
+
+#### Vendored Source (`src-ThirdParty/`)
+List contents of `src-ThirdParty/` directory. Current vendored code and license sources:
+
+| Directory | Name | License Source |
+|-----------|------|---------------|
+| `android-platform-tools-base/` | android/platform/tools/base | https://android.googlesource.com/platform/tools/base/+/refs/heads/main/sdk-common/NOTICE (Apache 2.0) |
+| `bazel/` | bazelbuild/bazel | https://github.com/bazelbuild/bazel/ (Apache 2.0) |
+| `bionic/` | google/bionic | https://android.googlesource.com/platform/bionic/ (Apache 2.0) |
+| `crc32.net/` | force-net/crc32.net | https://github.com/force-net/Crc32.NET (MIT) |
+| `NUnitLite/` | nunit/nunitlite | https://github.com/nunit/nunitlite/ (MIT) |
+| `StrongNameSigner/` | brutaldev/StrongNameSigner | https://github.com/brutaldev/StrongNameSigner/ (Apache 2.0) |
+
+Note: `Mono.Security.Cryptography/`, `System.Diagnostics.CodeAnalysis/`, `System.Runtime.CompilerServices/`, and `dotnet/` are Microsoft-owned and do not need TPN entries.
+
+#### NuGet Packages
+Search `.csproj` files for `<PackageReference>` elements. Current third-party NuGet packages needing TPNs:
+
+| Package | Name in TPN | License URL |
+|---------|------------|-------------|
+| ELFSharp | KonradKuczynski/ELFSharp | https://elfsharp.it/ (MIT + LLVM) |
+| K4os.Compression.LZ4 | MiloszKrajewski/K4os.Compression.LZ4 | https://github.com/MiloszKrajewski/K4os.Compression.LZ4/ (MIT) |
+| Xamarin.LibZipSharp | xamarin/LibZipSharp | https://github.com/xamarin/LibZipSharp/ (MIT) |
+| Irony | IronyProject/Irony | https://github.com/IronyProject/Irony (MIT) |
+| Newtonsoft.Json | JamesNK/Newtonsoft.Json | https://github.com/JamesNK/Newtonsoft.Json (MIT) |
+| NuGet.ProjectModel | NuGet/NuGet.Client | https://github.com/NuGet/NuGet.Client (Apache 2.0) |
+| Mono.Cecil | mono/cecil | https://github.com/mono/cecil/ (MIT) |
+| Microsoft.Xml.SgmlReader | lovettchris/SgmlReader | https://github.com/lovettchris/SgmlReader/ (Apache 2.0) |
+
+Note: Microsoft-owned NuGet packages (Microsoft.*, System.*) do not need TPN entries.
+
+#### Vendored Linker Code
+The `src/Xamarin.Android.Build.Tasks/Linker/External/` directory contains vendored code from the Mono linker:
+
+| Source | Name in TPN | License URL |
+|--------|------------|-------------|
+| Linker/External/ | mono/linker | https://github.com/mono/linker/ (MIT) |
+
+#### Native Libraries (from CMakeLists.txt)
+Check `src/native/` CMakeLists.txt files for references to external native code. The submodules above (lz4, xxHash, libunwind, robin-map) are compiled into native libraries.
+
+#### Android SDK Tools
+These are downloaded and shipped with the SDK:
+
+| Tool | Name in TPN | License URL |
+|------|------------|-------------|
+| aapt2 | google/aapt2 | https://mvnrepository.com/artifact/com.android.tools.build/aapt2 (Apache 2.0) |
+| bundletool | google/bundletool | https://github.com/google/bundletool (Apache 2.0) |
+| r8 | google/r8 | https://r8.googlesource.com/r8/ (BSD-3-Clause) |
+| binutils | gnu/binutils | https://sourceware.org/git/?p=binutils-gdb.git;a=tree;hb=HEAD (GPLv3) |
+
+#### libzip (via LibZipSharp NuGet)
+LibZipSharp bundles libzip internally:
+
+| Source | Name in TPN | License Location |
+|--------|------------|-----------------|
+| libzip (in LibZipSharp NuGet) | nih-at/libzip | LibZipSharp NuGet `Licences/libzip/LICENSE` or https://github.com/nih-at/libzip/ (BSD-3-Clause) |
+
+### Step 2 — Cross-reference
+
+Compare the inventory against the current entries in `THIRD-PARTY-NOTICES.TXT`:
+- **Missing entries**: Dependencies found in Step 1 but not in the TPN file
+- **Stale entries**: TPN entries for dependencies no longer used
+- **Incorrect info**: Wrong URLs, outdated license text
+
+### Step 3 — Update the file
+
+For each change:
+1. Add/remove the TOC line (maintain sorted order and renumber)
+2. Add/remove the license section (maintain sorted order)
+3. For new entries, fetch the license text from the source URL or LICENSE file
+
+### Step 4 — Verify
+
+Run `grep -cP "^\d+\." THIRD-PARTY-NOTICES.TXT` (or `Select-String "^\d+\." THIRD-PARTY-NOTICES.TXT` on Windows) to confirm the entry count and ordering.

Configuration.props

@@ -28,24 +28,24 @@
     <!-- The min API level supported by non-Mono runtimes (CoreCLR/NativeAOT) -->
     <AndroidMinimumNonMonoApiLevel Condition="'$(AndroidMinimumNonMonoApiLevel)' == ''">24</AndroidMinimumNonMonoApiLevel>
     <!-- *Latest* *stable* API level binding that we support; used when building src/Xamarin.Android.Build.Tasks -->
-    <AndroidLatestStableApiLevel Condition="'$(AndroidLatestStableApiLevel)' == ''">36.1</AndroidLatestStableApiLevel>
-    <AndroidLatestStablePlatformId Condition="'$(AndroidLatestStablePlatformId)' == ''">$(AndroidLatestStableApiLevel)</AndroidLatestStablePlatformId>
-    <AndroidLatestStableFrameworkVersion Condition="'$(AndroidLatestStableFrameworkVersion)'==''">v16.1</AndroidLatestStableFrameworkVersion>
-    <!-- If there is a second *stable* API level (e.g. 37.1 alongside 37), set it here:
-    <AndroidLatestStableApiLevel2 Condition="'$(AndroidLatestStableApiLevel2)' == ''">37.1</AndroidLatestStableApiLevel2>
+    <AndroidLatestStableApiLevel Condition="'$(AndroidLatestStableApiLevel)' == ''">37</AndroidLatestStableApiLevel>
+    <AndroidLatestStablePlatformId Condition="'$(AndroidLatestStablePlatformId)' == ''">37.0</AndroidLatestStablePlatformId>
+    <AndroidLatestStableFrameworkVersion Condition="'$(AndroidLatestStableFrameworkVersion)'==''">v17.0</AndroidLatestStableFrameworkVersion>
+    <!-- If there is a second *stable* API level (e.g. 38.1 alongside 38), set it here:
+    <AndroidLatestStableApiLevel2 Condition="'$(AndroidLatestStableApiLevel2)' == ''">38.1</AndroidLatestStableApiLevel2>
     -->
     <!-- *Latest* *unstable* API level binding that we support; this can be the same as *stable* -->
-    <AndroidLatestUnstableApiLevel Condition="'$(AndroidLatestUnstableApiLevel)' == ''">37</AndroidLatestUnstableApiLevel>
-    <AndroidLatestUnstablePlatformId Condition="'$(AndroidLatestUnstablePlatformId)' == ''">37.0</AndroidLatestUnstablePlatformId>
-    <AndroidLatestUnstableFrameworkVersion Condition="'$(AndroidLatestUnstableFrameworkVersion)'==''">v17.0</AndroidLatestUnstableFrameworkVersion>
+    <AndroidLatestUnstableApiLevel Condition="'$(AndroidLatestUnstableApiLevel)' == ''">$(AndroidLatestStableApiLevel)</AndroidLatestUnstableApiLevel>
+    <AndroidLatestUnstablePlatformId Condition="'$(AndroidLatestUnstablePlatformId)' == ''">$(AndroidLatestStablePlatformId)</AndroidLatestUnstablePlatformId>
+    <AndroidLatestUnstableFrameworkVersion Condition="'$(AndroidLatestUnstableFrameworkVersion)'==''">$(AndroidLatestStableFrameworkVersion)</AndroidLatestUnstableFrameworkVersion>
     <!-- The default API level used for $(TargetPlatformVersion) -->
     <AndroidDefaultTargetDotnetApiLevel Condition=" '$(AndroidDefaultTargetDotnetApiLevel)' == '' ">$(AndroidLatestStableApiLevel)</AndroidDefaultTargetDotnetApiLevel>
     <!-- The API level and TargetFrameworkVersion for the default Mono.Android.dll build -->
     <AndroidApiLevel Condition=" '$(AndroidApiLevel)' == '' ">$(AndroidLatestStableApiLevel)</AndroidApiLevel>
     <AndroidPlatformId Condition=" '$(AndroidPlatformId)' == '' ">$(AndroidLatestStablePlatformId)</AndroidPlatformId>
     <AndroidFrameworkVersion Condition=" '$(AndroidFrameworkVersion)' == '' ">$(AndroidLatestStableFrameworkVersion)</AndroidFrameworkVersion>
     <AndroidUseLatestPlatformSdk Condition=" '$(AndroidFrameworkVersion)' == '' ">True</AndroidUseLatestPlatformSdk>
-    <AndroidJavaRuntimeApiLevel Condition="'$(AndroidJavaRuntimeApiLevel)' == ''">$(AndroidLatestStableApiLevel)</AndroidJavaRuntimeApiLevel>
+    <AndroidJavaRuntimeApiLevel Condition="'$(AndroidJavaRuntimeApiLevel)' == ''">$(AndroidLatestStablePlatformId)</AndroidJavaRuntimeApiLevel>
     <DebugType Condition=" '$(DebugType)' == '' ">portable</DebugType>
     <Deterministic Condition=" '$(Deterministic)' == '' ">True</Deterministic>
     <LangVersion Condition=" '$(LangVersion)' == '' ">latest</LangVersion>

Documentation/docs-mobile/TOC.yml

@@ -250,8 +250,6 @@
         href: messages/xa1011.md
       - name: XA1023
         href: messages/xa1023.md
-      - name: XA1024
-        href: messages/xa1024.md
       - name: XA1025
         href: messages/xa1025.md
       - name: XA1027

Documentation/docs-mobile/messages/index.md

@@ -134,7 +134,7 @@ or 'Help->Report a Problem' in Visual Studio for Mac.
 + XA1021: Specified source Java library not found: {file}
 + XA1022: Specified reference Java library not found: {file}
 + [XA1023](xa1023.md): Using the DX DEX Compiler is deprecated.
-+ [XA1024](xa1024.md): Ignoring configuration file 'Foo.dll.config'. .NET configuration files are not supported in .NET for Android projects that target .NET 6 or higher.
++ XA1024: Removed in .NET 11.
 + [XA1025](xa1025.md): The experimental 'Hybrid' value for the 'AndroidAotMode' MSBuild property is not currently compatible with the armeabi-v7a target ABI.
 + [XA1027](xa1027.md): The 'EnableProguard' MSBuild property is set to 'true' and the 'AndroidLinkTool' MSBuild property is empty, so 'AndroidLinkTool' will default to 'proguard'.
 + [XA1028](xa1028.md): The 'AndroidEnableProguard' MSBuild property is set to 'true' and the 'AndroidLinkTool' MSBuild property is empty, so 'AndroidLinkTool' will default to 'proguard'.

Documentation/docs-mobile/messages/xa1024.md

@@ -1,39 +1,17 @@
 ---
 title: .NET for Android warning XA1024
-description: XA1024 warning code
-ms.date: 04/11/2024
+description: XA1024 warning code (removed)
+ms.date: 05/01/2026
 f1_keywords:
   - "XA1024"
 ---
 
 # .NET for Android warning XA1024
 
-## Example messages
+This warning has been removed in .NET 11.
 
-```
-warning XA1024: Ignoring configuration file 'Foo.dll.config'. .NET configuration files are not supported in .NET for Android projects that target .NET 6 or higher.
-```
-
-## Issue
-
-No support for [configuration files][config] such as `Foo.dll.config`
-or `Foo.exe.config` is available in .NET for Android projects.
-[`<dllmap>`][dllmap] configuration elements are not
-supported in .NET 6 at all, and other element types for compatibility
-packages like [System.Configuration.ConfigurationManager][nuget] have
-never been supported in .NET for Android projects.
-
-[config]: /dotnet/framework/configure-apps/
-[nuget]: https://www.nuget.org/packages/System.Configuration.ConfigurationManager/
-
-## Solution
-
-Use a supported alternative for [`<dllmap>`][dllmap], such as the
-[NativeLibrary][native] API.
-
-Use an alternative for application settings such as
-[Preferences][preferences] in Xamarin.Essentials.
-
-[dllmap]: https://github.com/dotnet/coreclr/blob/master/Documentation/design-docs/dllmap.md
-[native]: /dotnet/api/system.runtime.interopservices.nativelibrary
-[preferences]: /xamarin/essentials/preferences
+The warning was previously issued for `.config` files included in the
+build output, but it produced false positives for unrelated files such
+as `nuget.config`. Since `.config` files are already excluded from the
+publish output and the .NET 6 transition period is long past, the
+warning is no longer necessary.