dotnet · jonpryor · Dec 3, 2019 · Oct 8, 2019 · Oct 8, 2019 · Oct 9, 2019
diff --git a/.external b/.external
@@ -1,2 +1,2 @@
 xamarin/monodroid:master@1b907d680cc6561dcfaddc6f997d2f6ff5456644
-mono/mono:2019-08@8946e49a974ea8b75fe5b8b7e93ffd4571521a85
+mono/mono:2019-10@18920a83f423fb864a2263948737681968f5b2c8
diff --git a/Configuration.props b/Configuration.props
@@ -81,10 +81,10 @@
     <AndroidSupportedTargetJitAbis Condition=" '$(AndroidSupportedTargetJitAbis)' == '' ">armeabi-v7a:arm64-v8a:x86</AndroidSupportedTargetJitAbis>
     <JavaInteropSourceDirectory Condition=" '$(JavaInteropSourceDirectory)' == '' ">$(MSBuildThisFileDirectory)external\Java.Interop</JavaInteropSourceDirectory>
     <MonoSourceDirectory>$(MSBuildThisFileDirectory)external\mono</MonoSourceDirectory>
-    <MonoRequiredMinimumVersion Condition=" '$(MonoRequiredMinimumVersion)' == '' ">6.6.0</MonoRequiredMinimumVersion>
-    <MonoRequiredMaximumVersion Condition=" '$(MonoRequiredMaximumVersion)' == '' ">6.7.0</MonoRequiredMaximumVersion>
+    <MonoRequiredMinimumVersion Condition=" '$(MonoRequiredMinimumVersion)' == '' ">6.8.0</MonoRequiredMinimumVersion>
+    <MonoRequiredMaximumVersion Condition=" '$(MonoRequiredMaximumVersion)' == '' ">6.9.0</MonoRequiredMaximumVersion>
     <IgnoreMaxMonoVersion Condition=" '$(IgnoreMaxMonoVersion)' == '' ">True</IgnoreMaxMonoVersion>
-    <MonoRequiredDarwinMinimumVersion>$(MonoRequiredMinimumVersion).54</MonoRequiredDarwinMinimumVersion>
+    <MonoRequiredDarwinMinimumVersion>$(MonoRequiredMinimumVersion).61</MonoRequiredDarwinMinimumVersion>
     <LinkerSourceDirectory>$(MSBuildThisFileDirectory)external\mono\sdks\out\android-sources\external\linker\src</LinkerSourceDirectory>
     <OpenTKSourceDirectory>$(MSBuildThisFileDirectory)external\opentk</OpenTKSourceDirectory>
     <MingwZlibRootDirectory Condition=" '$(ZlibRootDirectory)' == '' And '$(HostOS)' == 'Linux' ">\usr</MingwZlibRootDirectory>

diff --git a/Documentation/guides/BuildProcess.md b/Documentation/guides/BuildProcess.md
@@ -735,12 +735,15 @@ when packaging Release applications.
         This corresponds to the **Native TLS 1.2+** setting in the
         Visual Studio property pages.
 
-    -   `legacy`: Use the historical managed SSL implementation for
-        network interaction. This *does not* support TLS 1.2.
+    -   `legacy`: In Xamarin.Android v10.1 and earlier, use the historical
+        managed SSL implementation for network interaction. This *does not* support TLS 1.2.
 
         This corresponds to the **Managed TLS 1.0** setting in the
         Visual Studio property pages.
 
+        In Xamarin.Android v10.2 and later, this value is ignored and the
+        `btls` setting is used.
+
     -   `default`: This value is unlikely to be used in Xamarin.Android
         projects. The recommended value to use instead is the empty string,
         which corresponds to the **Default** setting in the Visual Studio

diff --git a/Documentation/release-notes/3753.md b/Documentation/release-notes/3753.md
@@ -0,0 +1,9 @@
+### Bumps to mono/mono/2019-10@18920a83
+
+This brings in a multitude of changes.
+
+TODO: link to Mono release notes for Mono 6.8.0.
+
+In particular, this updates `Mono.Security.dll` to *remove* support for TLS 1.0.
+When the `$(AndroidTlsProvider)` MSBuild property is set to `legacy` or
+`default`, the `btls` value will now be used.
diff --git a/Documentation/workflow/HowToBumpMono.md b/Documentation/workflow/HowToBumpMono.md
@@ -1,64 +1,18 @@
 # How To Bump Mono
 
-There will eventually be two ways that xamarin-android depends on mono:
+Android uses a binary artifcats package from mono that is tied to a specific version / commit. This makes it pretty trivial to bump mono.
 
- 1. Via [source code](#mono-source), or
- 2. Via [mono archive](#mono-archive)
+The folloing checklist covers what you need to do.  Note, if you know the system mono version does not need changed, you can skip the first step.
 
-
-<a name="mono-source" />
-
-## Mono Source
-
-When using mono from source -- which is required for all versions of mono
-before the `mono/2018-10` release branch -- the
-[`external/mono`](../../external) git submodule reference is used.
-
-Currently, many parts of the xamarin-android build system *require* the
-presence and use of mono source code, including:
-
-  * The [`src/Mono.Posix`](../../src/Mono.Posix) and
-    [`src/Mono.Data.Sqlite`](../../src/Mono.Data.Sqlite) builds.
-  * Inclusion of PDB2MDB source code within
-    [`src/Xamarin.Android.Build.Tasks`](../../src/Xamarin.Android.Build.Tasks).
-  * Inclusion of networking and related code into
-    [`src/monodroid`](../../src/monodroid).
-
-We are working to remove these source dependencies so that we can support using
-a [Mono Archive](#mono-archive) in the future.
-
-Until a Mono Archive *exists* and can be *used*, source code integration must
-fulfill the following checklist:
-
-  - [ ] [Update `.gitmodules`](#update-gitmodules).
-  - [ ] [Update `external/mono` submodule reference](#update-mono-submodule).
   - [ ] [Update system mono used for the build](#update-system-mono).
-  - [ ] [Update `MonoAndroid` Profile Assemblies](#update-profile)
+  - [ ] [Update MonoRequiredDarwinMinimumVersion used in the build](#update-configuration-props).
+  - [ ] [Update external mono commit in .external](#update-mono-external-commit).
   - [ ] [Ensure it *builds*](#build).
   - [ ] [Ensure unit tests *pass*](#unit-tests).
   - [ ] [Check for API Breakage](#api-validation).
   - [ ] [Create a Pull Request](#create-pr).
   - [ ] [Ask for QA Validation](#qa-validation) (***LAST***).
 
-
-<a name="update-gitmodules" />
-
-### Update `.gitmodules`
-
-Update [`.gitmodules`](../../.gitmodules) to refer to the correct mono branch.
-
-
-<a name="update-mono-submodule" />
-
-### Update `external/mono`
-
-Update the git submodule reference that [`external/mono`](../../external) refers to:
-
-	cd external/mono
-	git checkout BRANCH-NAME
-	git pull --rebase
-
-
 <a name="update-system-mono" />
 
 ### Update system mono
@@ -71,92 +25,21 @@ These version numbers can be found in
 [mono's `configure.ac`](https://github.com/mono/mono/blob/master/configure.ac)
 in the `AC_INIT()` statement.
 
-The `$(_DarwinMonoFramework)` and `%(RequiredProgram.DarwinMinimumUrl)` values
-within [`build-tools/dependencies/dependencies.projitems`](../../build-tools/dependencies/dependencies.projitems)
-should be updated to corresponds to the version number used in the mono submodule.
-
-`%(DarwinMinimumUrl)` must be a macOS `.pkg` file and must exist.
-
-For example, see commit
-[606675b5](https://github.com/xamarin/xamarin-android/commit/606675b59f52595e3030c529de4c856fb347edd8):
-
-```diff
-diff --git a/Configuration.props b/Configuration.props
-index a2a9c1d1..ec78ddb4 100644
---- a/Configuration.props
-+++ b/Configuration.props
-@@ -70,8 +70,8 @@
-     <JavaInteropSourceDirectory Condition=" '$(JavaInteropSourceDirectory)' == '' ">$(MSBuildThisFileDirectory)external\Java.Interop</JavaInteropSourceDirectory>
-     <MonoSourceDirectory>$(MSBuildThisFileDirectory)external\mono</MonoSourceDirectory>
--    <MonoRequiredMinimumVersion Condition=" '$(MonoRequiredMinimumVersion)' == '' ">5.14.0</MonoRequiredMinimumVersion>
--    <MonoRequiredMaximumVersion Condition=" '$(MonoRequiredMaximumVersion)' == '' ">5.15.0</MonoRequiredMaximumVersion>
-+    <MonoRequiredMinimumVersion Condition=" '$(MonoRequiredMinimumVersion)' == '' ">5.16.0</MonoRequiredMinimumVersion>
-+    <MonoRequiredMaximumVersion Condition=" '$(MonoRequiredMaximumVersion)' == '' ">5.17.0</MonoRequiredMaximumVersion>
-     <IgnoreMaxMonoVersion Condition=" '$(IgnoreMaxMonoVersion)' == '' ">True</IgnoreMaxMonoVersion>
-     <MonoRequiredDarwinMinimumVersion>$(MonoRequiredMinimumVersion).0</MonoRequiredDarwinMinimumVersion>
-     <LinkerSourceDirectory>$(MSBuildThisFileDirectory)external\mono\external\linker</LinkerSourceDirectory>
-diff --git a/build-tools/dependencies/dependencies.projitems b/build-tools/dependencies/dependencies.projitems
-index f4a2f60e..1bd5d8c2 100644
---- a/build-tools/dependencies/dependencies.projitems
-+++ b/build-tools/dependencies/dependencies.projitems
-@@ -1,7 +1,7 @@
- <?xml version="1.0" encoding="utf-8"?>
- <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-   <PropertyGroup>
--    <_DarwinMonoFramework>MonoFramework-MDK-5.14.0.141.macos10.xamarin.universal.pkg</_DarwinMonoFramework>
-+    <_DarwinMonoFramework>MonoFramework-MDK-5.16.0.106.macos10.xamarin.universal.pkg</_DarwinMonoFramework>
-     <_AptGetInstall>apt-get -f -u install</_AptGetInstall>
-   </PropertyGroup>
-   <ItemGroup>
-@@ -59,7 +59,7 @@
-       <MaximumVersion Condition=" '$(IgnoreMaxMonoVersion)' == '' Or '$(IgnoreMaxMonoVersion)' == 'False' " >$(MonoRequiredMaximumVersion)</MaximumVersion>
-       <DarwinMinimumVersion>$(MonoRequiredDarwinMinimumVersion)</DarwinMinimumVersion>
-       <CurrentVersionCommand>$(MSBuildThisFileDirectory)..\scripts\mono-version</CurrentVersionCommand>
--      <DarwinMinimumUrl>https://xamjenkinsartifact.azureedge.net/build-package-osx-mono/2018-04/116/8ae8c52383b43892fb7a35dbf0992738bd52fa90/$(_DarwinMonoFramework)</DarwinMinimumUrl>
-+      <DarwinMinimumUrl>https://xamjenkinsartifact.azureedge.net/build-package-osx-mono/2018-06/78/341142d7656f43239a041b2c44f00acfb8fa7c59/$(_DarwinMonoFramework)</DarwinMinimumUrl>
-       <DarwinInstall>installer -pkg "$(AndroidToolchainCacheDirectory)\$(_DarwinMonoFramework)" -target /</DarwinInstall>
-     </RequiredProgram>
-   </ItemGroup>
-```
-
-
-<a name="update-profile" />
-
-### Update `MonoAndroid` Profile Assemblies
-
-[`src/mono-runtimes/ProfileAssemblies.projitems`](../../src/mono-runtimes/ProfileAssemblies.projitems)
-has three item groups that may need to be updated:
-
-  * `@(MonoFacadeAssembly)`
-  * `@(MonoProfileAssembly)`
-  * `@(MonoTestAssembly)`
-
-There must be a `@(MonoFacadeAssembly)` entry for every Facade assembly that
-must be shipped in the SDK.  Facade assemblies are installed into the
-`bin/$(Configuration)/lib/xamarin.android/xbuild-frameworks/MonoAndroid/v1.0/Facades`
-directory.
-
-This script uses the contents of `external/mono/sdks/out/android-bcl`, and thus
-requires either a local monodroid sdks build, or the extraction of a
-[Mono Archive](#mono-archive).
-
-The `@(MonoProfileAssembly)` item group is for non-Facade assemblies, which are
-installed into the
-`bin/$(Configuration)/lib/xamarin.android/xbuild-frameworks/MonoAndroid/v1.0`
-directory.  This item group must be updated whenever a new BCL assembly is added.
-
-The `@(MonoTestAssembly)` item group contains unit test assemblies, executed by
-[`tests/BCL-Tests`](../../tests/BCL-Tests).
-The `%(MonoTestAssembly.TestType)` item metadata is the *type* of unit test
-assembly; valid values are `xunit` (for xUnit unit test assemblies),
-`reference` (for ???), and the empty string/not set (for NUnit assemblies).
-
-
-It should be possible to update `ProfileAssemblies.projitems` by running the
-script `build-tools/scripts/gen-ProfileAssemblies.sh`:
-
-	build-tools/scripts/gen-ProfileAssemblies.sh > src/mono-runtimes/ProfileAssemblies.projitems
+An example within Configuration.props:
+
+`<MonoRequiredMinimumVersion Condition=" '$(MonoRequiredMinimumVersion)' == '' ">6.8.0</MonoRequiredMinimumVersion>`
+
+`<MonoRequiredMaximumVersion Condition=" '$(MonoRequiredMaximumVersion)' == '' ">6.9.0</MonoRequiredMaximumVersion>`
+
+<a name="update-mono-external-commit" />
+
+### Update external mono commit in .external
+
+Updating the commit in this file will pull in the version of mono you want to bump to. 
 
+Within [`.external`](../../.external) indicate the mono branch and commit.  For example:
+
+`mono/mono:2019-10@e9b5aec5ec7801df66117f2da730672ede15dcc6`
 
 <a name="build" />
 
@@ -232,17 +115,3 @@ Asking QA for validation should be done ***last***.
 
 Once QA approves, the mono bump PR can be merged.
 
-
-<a name="mono-archive" />
-
-## Mono Archives
-
-A "Mono Archive" is a binary package (`.zip` file) which contains *binary*
-mono artifacts, *not* source code.
-
-See also:
-
-  * The [Mono SDKs Integration project](https://github.com/xamarin/xamarin-android/projects/10)
-  * Commit [f970cd50](https://github.com/xamarin/xamarin-android/commit/f970cd50d2c19dcb4b62cc1dd1198c31cc10a2df)
-
-TODO. :-)
diff --git a/build-tools/automation/build.linux.groovy b/build-tools/automation/build.linux.groovy
@@ -27,6 +27,7 @@ def chRootPackages = '''
     lib32z1
     libc++-dev
     libgdk-pixbuf2.0-dev
+    libmono-btls-interface4.0-cil
     libncurses5-dev
     libsqlite3-dev
     libtinfo-dev:i386

diff --git a/build-tools/xaprepare/xaprepare/ConfigAndData/Configurables.MacOS.cs b/build-tools/xaprepare/xaprepare/ConfigAndData/Configurables.MacOS.cs
@@ -7,7 +7,7 @@ partial class Configurables
 		partial class Urls
 		{
 			public static readonly Uri Corretto = new Uri ($"{Corretto_BaseUri}{CorrettoUrlPathVersion}/amazon-corretto-{CorrettoDistVersion}-macosx-x64.tar.gz");
-			public static readonly Uri MonoPackage = new Uri ("https://download.mono-project.com/archive/6.4.0/macos-10-universal/MonoFramework-MDK-6.4.0.198.macos10.xamarin.universal.pkg");
+			public static readonly Uri MonoPackage = new Uri ("https://xamjenkinsartifact.azureedge.net/build-package-osx-mono/2019-10/57/e9b5aec5ec7801df66117f2da730672ede15dcc6/MonoFramework-MDK-6.8.0.53.macos10.xamarin.universal.pkg");
 		}
 
 		partial class Defaults

diff --git a/build-tools/xaprepare/xaprepare/ConfigAndData/Dependencies/MacOS.cs b/build-tools/xaprepare/xaprepare/ConfigAndData/Dependencies/MacOS.cs
@@ -33,7 +33,7 @@ partial class MacOS
 
 			// If you change the minimum Mono version here, please change the URL as well
 			new MonoPkgProgram ("Mono", "com.xamarin.mono-MDK.pkg", Configurables.Urls.MonoPackage) {
-				MinimumVersion = "6.0.0.313",
+				MinimumVersion = "6.8.0.53",
 				MaximumVersion = "6.99.0.0",
 			},
 		};

diff --git a/build-tools/xaprepare/xaprepare/Steps/Step_BuildMonoRuntimes.Unix.cs b/build-tools/xaprepare/xaprepare/Steps/Step_BuildMonoRuntimes.Unix.cs
@@ -411,8 +411,7 @@ List<string> PrepareMakeArguments (Context context, string workingDirectory, Lis
 			string toolchainsPrefix = Path.Combine (GetProperty (KnownProperties.AndroidToolchainDirectory), "toolchains");
 
 			var ret = new List<string> {
-				 "DISABLE_IOS=1",
-				 "DISABLE_MAC=1",
+				 "ENABLE_ANDROID=1",
 				$"CONFIGURATION={Configurables.Defaults.MonoSdksConfiguration}",
 				 "IGNORE_PROVISION_MXE=false",
 				 "IGNORE_PROVISION_ANDROID=true",

diff --git a/external/xamarin-android-api-compatibility b/external/xamarin-android-api-compatibility
diff --git a/src/Xamarin.Android.Build.Tasks/Linker/MonoDroid.Tuner/PreserveTlsProvider.cs b/src/Xamarin.Android.Build.Tasks/Linker/MonoDroid.Tuner/PreserveTlsProvider.cs
@@ -34,12 +34,10 @@ TypeDefinition GetTlsProvider (ModuleDefinition module)
 
 			TypeDefinition type;
 			switch (provider) {
-			case "btls":
-				type = module.GetType ("Mono.Btls.MonoBtlsProvider");
-				break;
 			case "legacy":
 			case "default":
-				type = module.GetType ("Mono.Net.Security.LegacyTlsProvider");
+			case "btls":
+				type = module.GetType ("Mono.Btls.MonoBtlsProvider");
 				break;
 			default:
 				throw new InvalidOperationException (string.Format ("Unknown TlsProvider `{0}`.", provider));

diff --git a/src/Xamarin.Android.Build.Tasks/Tasks/BuildApk.cs b/src/Xamarin.Android.Build.Tasks/Tasks/BuildApk.cs
@@ -409,13 +409,7 @@ void AddProfilers (ZipArchiveEx apk, string abi)
 
 		void AddBtlsLibs (ZipArchiveEx apk, string abi)
 		{
-			if (string.IsNullOrEmpty (TlsProvider) ||
-					string.Compare ("btls", TlsProvider, StringComparison.OrdinalIgnoreCase) == 0) {
-				AddNativeLibrary (apk, abi, "libmono-btls-shared.so");
-			}
-			// These are the other supported values
-			//  * "default":
-			//  * "legacy":
+			AddNativeLibrary (apk, abi, "libmono-btls-shared.so");
 		}
 
 		void AddRuntimeLibraries (ZipArchiveEx apk, string [] supportedAbis)

diff --git a/src/Xamarin.Android.Build.Tasks/Tests/Xamarin.Android.Build.Tests/BuildTest.cs b/src/Xamarin.Android.Build.Tasks/Tests/Xamarin.Android.Build.Tests/BuildTest.cs
@@ -2701,8 +2701,8 @@ public void BuildWithResolveAssembliesFailure ([Values (true, false)] bool usePa
 		{
 			// androidTlsProvider, isRelease, extpected
 			new object[] { "", true, true, },
-			new object[] { "default", true, false, },
-			new object[] { "legacy", true, false, },
+			new object[] { "default", true, true, },
+			new object[] { "legacy", true, true, },
 			new object[] { "btls", true, true, }
 		};
 

diff --git a/src/Xamarin.Android.Build.Tasks/Xamarin.Android.Build.Tasks.csproj b/src/Xamarin.Android.Build.Tasks/Xamarin.Android.Build.Tasks.csproj
@@ -328,6 +328,9 @@
     <Compile Include="$(LinkerSourceFullPath)\linker\Linker\MethodReferenceExtensions.cs">
       <Link>Linker\Linker\MethodReferenceExtensions.cs</Link>
     </Compile>
+    <Compile Include="$(LinkerSourceFullPath)\linker\Linker\OutputException.cs">
+      <Link>Linker\Linker\OutputException.cs</Link>
+    </Compile>
     <Compile Include="$(LinkerSourceFullPath)\linker\Linker\OverrideInformation.cs">
       <Link>Linker\Linker\OverrideInformation.cs</Link>
     </Compile>