[structure] Rework installation directory structure

Context: #253 (comment)

The *intention* is that Jenkins-produced `oss-xamarin.android*.zip`
artifacts be usable on Windows, so that side-by-side testing can be
perfomed without replacing the system installation. Usage is in
[UsingJenkinsBuildArtifacts.md](Documentation/UsingJenkinsBuildArtifacts).

This isn't *entirely* the case. It was *apparently* the case at the
time of commit 87ca273, but things have bitrotten since, and/or the
support was always insufficient.

For example, 87ca273 states that it should be possible to use
`msbuild /t:TargetFrameworkRootPath=...` to specify the
`lib\xbuild-frameworks` directory as the location to find
`Mono.Android` framework assemblies.

...and this works! So long as your project *only* uses Xamarin.Android
assemblies and projects.

PCL assemblies and projects do *not* fall under this umbrella.
Consequently, attempting to use PCL assemblies while overriding
`$(TargetFrameworkRootPath)` results in a gnarly error:

	error MSB3644: The reference assemblies for framework ".NETPortable,Version=v4.5,Profile=Profile259" were not found.

This significantly reduces the usefulness of
`oss-xamarin.android*.zip` on Windows. Fix this by TODO ARGH.

Additionally, PR #253 mentions that, for filesystem organization, it
would be useful if the macOS/Linux directory structure --
`$prefix/bin`, `$prefix/lib/mandroid`,
`$prefix/lib/xbuild/Xamarin/Android`, `$prefix/lib/xbuild-frameworks`
-- more closely resembled the Windows directory structure of
`$MSBuild` and `$ReferenceAssemblies` (as seen in `.vsix` files).
This would turn macOS/Linux into using `$xa_prefix/xbuild` and
`$xa_prefix/xbuild-frameworks` directories.

`$prefix/bin` would only contain `xabuild`. What is currently in
`$prefix/lib/mandroid` would be merged with
`$xa_prefix/xbuild/Xamarin/Android`.

`$xa_prefix`, meanwhile, could become
`$prefix/lib/oss-xamarin.android`.

This would turn the current macOS structure:

	$prefix/bin/xabuild
	$prefix/bin/generator
	$prefix/bin/cross-arm
	$prefix/lib/mandroid/generator.exe
	$prefix/lib/xbuild-frameworks/MonoAndroid/v1.0/mscorlib.dll
	$prefix/lib/xbuild/Xamarin/Android/Xamarin.Android.Common.targets

Into:

	$prefix/bin/xabuild
	$prefix/lib/xamarin.android/xbuild-frameworks/MonoAndroid/v1.0/mscorlib.dll
	$prefix/lib/xamarin.android/xbuild/Xamarin/Android/generator.exe
	$prefix/lib/xamarin.android/xbuild/Xamarin/Android/Xamarin.Android.Common.targets
	$prefix/lib/xamarin.android/xbuild/Xamarin/Android/Darwin/cross-arm

Other notes:

  * The `bundle-*.zip` filename has been has been changed to include a
    *hash* of the contents of various files, in particular
    `build-tools\mono-runtimes.*`. This was instigated via a
    conversation with @kumpera about making the filename more
    "idiot-proof": `mono-runtimes.props` contains *compiler flags*,
    and if any of those change, then *logically* the bundle should
    differ as well, as the mono runtimes may differ in significant
    ways. In theory, the `-v18` version should be used to track this,
    but this is a manual change, easy to overlook. The new `-hHASH`
    part of the filename should be more automagic.

    The new `<HashFileContents/>` task in `xa-prep-tasks.dll` is
    responsible for creating the hash value.

  * `Configuration.Java.Interop.Override.props` was moved into
    `build-tools/scripts`, becauase that would cleanup the root
    directory a bit.

  * OS-specific binaries are now placed into
    `$prefix/lib/xamarin.android/xbuild/Xamarin/Android/$(HostOS)`.
    On a theoretical plus side, this means that the same build
    directory can contain OS-specific binaries for multiple operating
    systems. (I don't know if anyone shares a build tree between e.g.
    macOS and Linux, but if anyone *does*...)

  * `$(MonoAndroidToolsDirectory)` should be considered *dead*, along
    with `$(MonoAndroidBinDirectory)`, as these should now *always*
    be the same directory as where `Xamarin.Android.Build.Tasks.dll`
    is located, or a `$(HostOS)` sub-directory.

  * `Xamarin.ProjectTools.csproj` needed to be updated to ensure that
    the build order was correct.

  * Remove all `[Obsolete]` and unreferenced members from
    `Xamarin.Android.Build.Utilities.dll`. There's too much in there,
    and it makes my head hurt trying to understand the
    interrelationships between it all. If it's not used, it's gone.

  * Work around an `xbuild`-ism: `%(_LlvmRuntime.InstallPath)` and
    `%(_MonoCrossRuntime.InstallPath)` *cannot* use MSBuild
    properties, e.g. `<InstallPath>$(HostOS)/</InstallPath>` doesn't
    work as desired; it's instead treated literally.
    Special-case `%(InstallPath)` until we fully migrate to MSBuild.

Configuration.props

@@ -20,6 +20,7 @@
   <PropertyGroup>
     <AutoProvision Condition=" '$(AutoProvision)' == '' ">False</AutoProvision>
     <AutoProvisionUsesSudo Condition=" '$(AutoProvisionUsesSudo)' == '' ">False</AutoProvisionUsesSudo>
+    <XAInstallPrefix Condition=" '$(XAInstallPrefix)' == '' ">$(MSBuildThisFileDirectory)\bin\$(Configuration)\lib\xamarin.android\</XAInstallPrefix>
     <HostOS Condition=" '$(HostOS)' == '' And '$(OS)' == 'Windows_NT' ">Windows</HostOS>
     <HostCc Condition=" '$(HostCc)' == '' ">$(HostCc64)</HostCc>
     <HostCxx Condition=" '$(HostCxx)' == '' ">$(HostCxx64)</HostCxx>

Documentation/DevelopmentTips.md

@@ -45,7 +45,7 @@ For example, to rebuild Mono for armeabi-v7a:
 
 	$ make -C build-tools/mono-runtimes/obj/Debug/armeabi-v7a
 
-	# This updates bin/$(Configuration)/lib/xbuild/Xamarin/Android/lib/armeabi-v7a/libmonosgen-2.0.so
+	# This updates bin/$(Configuration)/lib/xamarin.android/xbuild/Xamarin/Android/lib/armeabi-v7a/libmonosgen-2.0.so
 	$ xbuild /t:_InstallRuntimes build-tools/mono-runtimes/mono-runtimes.mdproj
 
 # How do I rebuild BCL assemblies?
@@ -65,7 +65,7 @@ varies based on the operating system you're building from:
 Once the assemblies have been rebuilt, they can be copied into the appropriate
 Xamarin.Android SDK directory by using the `_InstallBcl` target:
 
-	# This updates bin/$(Configuration)/lib/xbuild-frameworks/MonoAndroid/v1.0/ASSEMBLY.dll
+	# This updates bin/$(Configuration)/lib/xamarin.android/xbuild-frameworks/MonoAndroid/v1.0/ASSEMBLY.dll
 	$ xbuild build-tools/mono-runtimes/mono-runtimes.mdproj /t:_InstallBcl
 
 # Update Directory

Documentation/UsingJenkinsBuildArtifacts.md

@@ -156,9 +156,9 @@ For example (using the paths from [Android SDK Setup](#Android_SDK_Setup)):
 
 	msbuild /p:AndroidSdkDirectory="C:\xa-sdk\android-sdk" ^
 		/p:AndroidNdkDirectory="C:\xa-sdk\android-ndk\android-ndk-r14" ^
-		/p:MonoAndroidBinDirectory="C:\xa-sdk\oss-xamarin.android_v7.2.99.19_Darwin-x86_64_master_3b893cd\bin\Debug\lib\xbuild\Xamarin\Android" ^
-		/p:MonoAndroidToolsDirectory="C:\xa-sdk\oss-xamarin.android_v7.2.99.19_Darwin-x86_64_master_3b893cd\bin\Debug\lib\xbuild\Xamarin\Android" ^
-		/p:TargetFrameworkRootPath="C:\xa-sdk\oss-xamarin.android_v7.2.99.19_Darwin-x86_64_master_3b893cd\bin\Debug\lib\xbuild-frameworks" ^
+		/p:MonoAndroidBinDirectory="C:\xa-sdk\oss-xamarin.android_v7.2.99.19_Darwin-x86_64_master_3b893cd\bin\Debug\lib\xamarin.android\xbuild\Xamarin\Android" ^
+		/p:MonoAndroidToolsDirectory="C:\xa-sdk\oss-xamarin.android_v7.2.99.19_Darwin-x86_64_master_3b893cd\bin\Debug\lib\xamarin.android\xbuild\Xamarin\Android" ^
+		/p:TargetFrameworkRootPath="C:\xa-sdk\oss-xamarin.android_v7.2.99.19_Darwin-x86_64_master_3b893cd\bin\Debug\lib\xamarin.android\xbuild-frameworks" ^
 		/t:SignAndroidPackage ^
 		samples\HelloWorld\HelloWorld.csproj
 

Makefile

@@ -32,15 +32,16 @@ install::
 		echo "run 'make all' before you execute 'make install'!"; \
 		exit 1; \
 	fi
+	-mkdir -p "$(prefix)/bin"
 	-mkdir -p "$(prefix)/lib/mono/xbuild-frameworks"
 	-mkdir -p "$(prefix)/lib/xamarin.android"
 	-mkdir -p "$(prefix)/lib/mono/xbuild/Xamarin/"
-	cp -a "bin/$(CONFIGURATION)/." "$(prefix)/lib/xamarin.android/"
+	cp -a "bin/$(CONFIGURATION)/lib/xamarin.android/." "$(prefix)/lib/xamarin.android/"
 	cp tools/scripts/xabuild "$(prefix)/bin/xabuild"
 	-rm -rf "$(prefix)/lib/mono/xbuild/Xamarin/Android"
 	-rm -rf "$(prefix)/lib/mono/xbuild-frameworks/MonoAndroid"
-	ln -s "$(prefix)/lib/xamarin.android/lib/xbuild/Xamarin/Android/" "$(prefix)/lib/mono/xbuild/Xamarin/Android"
-	ln -s "$(prefix)/lib/xamarin.android/lib/xbuild-frameworks/MonoAndroid/" "$(prefix)/lib/mono/xbuild-frameworks/MonoAndroid"
+	ln -s "$(prefix)/lib/xamarin.android/xbuild/Xamarin/Android/" "$(prefix)/lib/mono/xbuild/Xamarin/Android"
+	ln -s "$(prefix)/lib/xamarin.android/xbuild-frameworks/MonoAndroid/" "$(prefix)/lib/mono/xbuild-frameworks/MonoAndroid"
 
 uninstall::
 	rm -rf "$(prefix)/lib/xamarin.android/" "$(prefix)/bin/xabuild"
@@ -90,7 +91,7 @@ prepare-external: prepare-deps
 	(cd $(call GetPath,JavaInterop) && make bin/BuildDebug/JdkInfo.props)
 
 prepare-props: prepare-external
-	cp Configuration.Java.Interop.Override.props external/Java.Interop/Configuration.Override.props
+	cp build-tools/scripts/Configuration.Java.Interop.Override.props external/Java.Interop/Configuration.Override.props
 	cp $(call GetPath,MonoSource)/mcs/class/msfinal.pub .
 
 prepare-msbuild: prepare-props

README.md

@@ -320,13 +320,13 @@ The `bin\$(Configuration)` directory, e.g. `bin\Debug`, contains
 acts as a *local installation prefix*, in which the directory structure
 mirrors that of the OS X Xamarin.Android.framework directory structure:
 
-* `bin\$(Configuration)\lib\xbuild\Xamarin\Android`: MSBuild-related support
+* `bin\$(Configuration)\lib\xamarin.android\xbuild\Xamarin\Android`: MSBuild-related support
     files and required runtimes used by the MSBuild tooling.
-* `bin\$(Configuration)\lib\xbuild-frameworks\MonoAndroid`: Xamarin.Android
+* `bin\$(Configuration)\lib\xamarin.android\xbuild-frameworks\MonoAndroid`: Xamarin.Android
     profiles.
-* `bin\$(Configuration)\lib\xbuild-frameworks\MonoAndroid\v1.0`: Xamarin.Android
+* `bin\$(Configuration)\lib\xamarin.android\xbuild-frameworks\MonoAndroid\v1.0`: Xamarin.Android
     Base Class Library assemblies such as `mscorlib.dll`.
-* `bin\$(Configuration)\lib\xbuild-frameworks\MonoAndroid\*`: Contains
+* `bin\$(Configuration)\lib\xamarin.android\xbuild-frameworks\MonoAndroid\*`: Contains
     `Mono.Android.dll` for a given Xamarin.Android `$(TargetFrameworkVersion)`.
 
 # Xamarin.Android `$(TargetFrameworkVersion)`s
@@ -354,7 +354,7 @@ For example, to generate `Mono.Android.dll` for API-19 (Android 4.4):
 
     cd src/Mono.Android
     xbuild /p:AndroidApiLevel=19 /p:AndroidFrameworkVersion=v4.4
-    # creates bin\Debug\lib\xbuild-frameworks\MonoAndroid\v4.4\Mono.Android.dll
+    # creates bin\Debug\lib\xamarin.android\xbuild-frameworks\MonoAndroid\v4.4\Mono.Android.dll
 
 <a name="Samples" />
 

build-tools/api-xml-adjuster/Makefile

@@ -6,7 +6,7 @@ ANDROID_SDK_PATH=$(shell find ~/ -maxdepth 1 -name android-sdk-*)
 
 DOCS_DIR=~/android-toolchain/docs
 
-MANDROID = ../../bin/$(CONFIGURATION)/lib/mandroid
+MANDROID = ../../bin/$(CONFIGURATION)/lib/xamarin.anroid/xbuild/Xamarin/Android
 BUILDBIN = ../../bin/Build$(CONFIGURATION)
 
 CLASS_PARSE = $(MANDROID)/class-parse.exe
@@ -62,7 +62,7 @@ $(ANALYZED_XML): $(API_XML_TOOL) $(CLASS_PARSE_XML)
 	$(RUN_API_XML_TOOL) $(CLASS_PARSE_XML) $(ANALYZED_XML) || rm -f $(ANALYZED_XML)
 
 $(CLASS_PARSE):
-	cd $(JAVA_INTEROP_PATH)/tools/class-parse && $(XBUILD) /p:OutputPath=$(TOP)/out/lib/mandroid
+	cd $(JAVA_INTEROP_PATH)/tools/class-parse && $(XBUILD) /p:OutputPath=$(TOP)/out/lib/xamarin.android/xbuild/Xamarin.Android/
 
 $(API_XML_TOOL):
 	$(XBUILD)

build-tools/bundle/bundle-path.targets

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <UsingTask AssemblyFile="..\..\bin\Build$(Configuration)\xa-prep-tasks.dll"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitCommitHash" />
+  <UsingTask AssemblyFile="..\..\bin\Build$(Configuration)\xa-prep-tasks.dll"  TaskName="Xamarin.Android.BuildTools.PrepTasks.HashFileContents" />
   <Target Name="_GetHashes">
     <GitCommitHash
         WorkingDirectory="$(LibZipSourceFullPath)"
@@ -20,11 +21,19 @@
         ToolExe="$(GitToolExe)">
       <Output TaskParameter="AbbreviatedCommitHash"   PropertyName="_MonoHash" />
     </GitCommitHash>
+    <!-- Files which contribute to the bundle "version" -->
+    <ItemGroup>
+      <VersionFile Include="..\mono-runtimes\mono-runtimes.*" />
+    </ItemGroup>
+    <HashFileContents
+        Files="@(VersionFile)">
+      <Output TaskParameter="AbbreviatedCompleteHash" PropertyName="_VersionHash"/>
+    </HashFileContents>
   </Target>
   <Target Name="GetBundleFileName"
       DependsOnTargets="_GetHashes">
     <PropertyGroup>
-      <XABundleFileName>bundle-v18-$(Configuration)-$(HostOS)-libzip=$(_LibZipHash),llvm=$(_LlvmHash),mono=$(_MonoHash).zip</XABundleFileName>
+      <XABundleFileName>bundle-v19-h$(_VersionHash)-$(Configuration)-$(HostOS)-libzip=$(_LibZipHash),llvm=$(_LlvmHash),mono=$(_MonoHash).zip</XABundleFileName>
     </PropertyGroup>
   </Target>
 </Project>

build-tools/bundle/bundle.targets

@@ -1,8 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <UsingTask AssemblyFile="$(_SourceTopDir)\bin\Build$(Configuration)\Xamarin.Android.Tools.BootstrapTasks.dll" TaskName="Xamarin.Android.Tools.BootstrapTasks.Zip" />
-  <Import Project="..\mono-runtimes\mono-runtimes.props" />
-  <Import Project="..\mono-runtimes\mono-runtimes.projitems" />
   <Import Project="..\mono-runtimes\mono-runtimes.targets" />
   <Import Project="..\libzip\libzip.props" />
   <Import Project="..\libzip-windows\libzip-windows.props" />

build-tools/create-vsix/create-vsix.targets

@@ -9,7 +9,7 @@
       $(PrepareForBuildDependsOn);
       AddContent
     </PrepareForBuildDependsOn>
-    <LibDir>..\..\bin\$(Configuration)\lib\</LibDir>
+    <LibDir>..\..\bin\$(Configuration)\lib\xamarin.android\</LibDir>
   </PropertyGroup>
   <ItemDefinitionGroup>
     <MSBuild>
@@ -36,16 +36,17 @@
       </MSBuild>
       <MSBuild Remove="$(LibDir)xbuild\Xamarin\Android\lib\host-Darwin\**\*.*" />
       <MSBuild Remove="$(LibDir)xbuild\Xamarin\Android\lib\host-Linux\**\*.*" />
+      <MSBuild Remove="$(LibDir)xbuild\Xamarin\Android\Darwin\**\*.*" />
+      <MSBuild Remove="$(LibDir)xbuild\Xamarin\Android\Linux\**\*.*" />
       <MSBuild Include="..\..\src\Xamarin.Android.Build.Tasks\MSBuild\Xamarin\**\*.*" />
       <MSBuild>
         <VSIXSubPath Condition=" '%(VSIXSubPath)' == '' ">Xamarin/%(RecursiveDir)</VSIXSubPath>
       </MSBuild>
-      <MSBuild Include="..\..\bin\$(Configuration)\lib\mandroid\**\*.*" />
-      <MSBuild Remove="..\..\bin\$(Configuration)\lib\mandroid\**\*.d.exe" />
       <MSBuild>
         <VSIXSubPath Condition=" '%(VSIXSubPath)' == '' ">Xamarin/Android/%(RecursiveDir)</VSIXSubPath>
       </MSBuild>
       <MSBuild Remove="$(LibDir)xbuild\**\*.d.dll" />
+      <MSBuild Remove="$(LibDir)xbuild\**\*.d.exe" />
       <ReferenceAssemblies Include="$(LibDir)xbuild-frameworks\**\*.*" />
       <ReferenceAssemblies>
         <VSIXSubPath Condition=" '%(VSIXSubPath)' == '' ">Microsoft/Framework/%(RecursiveDir)</VSIXSubPath>

build-tools/libzip-windows/libzip-windows.mdproj

@@ -9,10 +9,10 @@
   </PropertyGroup>
   <Import Project="..\..\Configuration.props" />
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <OutputPath>..\..\bin\$(Configuration)</OutputPath>
+    <OutputPath>$(XAInstallPrefix)xbuild\Xamarin\Android\</OutputPath>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-    <OutputPath>..\..\bin\$(Configuration)</OutputPath>
+    <OutputPath>$(XAInstallPrefix)xbuild\Xamarin\Android\</OutputPath>
   </PropertyGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.Common.targets" />
   <PropertyGroup>
@@ -24,6 +24,7 @@
   <Import Project="libzip-windows.props" />
   <Import Project="libzip-windows.projitems" />
   <Import Project="libzip-windows.targets" />
+  <Import Project="..\libzip\libzip.targets" />
   <ItemGroup>
     <ProjectReference Include="..\android-toolchain\android-toolchain.mdproj">
       <Project>{8FF78EB6-6FC8-46A7-8A15-EBBA9045C5FA}</Project>

build-tools/libzip-windows/libzip-windows.targets

@@ -1,4 +1,3 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\libzip\libzip.targets" />
 </Project>

build-tools/libzip/libzip.mdproj

@@ -9,10 +9,10 @@
   </PropertyGroup>
   <Import Project="..\..\Configuration.props" />
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <OutputPath>..\..\bin\$(Configuration)</OutputPath>
+    <OutputPath>$(XAInstallPrefix)xbuild\Xamarin\Android\</OutputPath>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-    <OutputPath>..\..\bin\$(Configuration)</OutputPath>
+    <OutputPath>$(XAInstallPrefix)xbuild\Xamarin\Android\</OutputPath>
   </PropertyGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.Common.targets" />
   <PropertyGroup>

build-tools/libzip/libzip.targets

@@ -8,6 +8,7 @@
       _Configure;
       _Make
     </ForceBuildDependsOn>
+    <_LibZipOutputPath>$(XAInstallPrefix)xbuild\Xamarin\Android\</_LibZipOutputPath>
   </PropertyGroup>
   <Target Name="Build" DependsOnTargets="$(BuildDependsOn)" />
   <Target Name="Clean" />
@@ -29,7 +30,7 @@
     />
   </Target>
   <ItemGroup>
-    <Content Include="@(_LibZipTarget->'$(OutputPath)\lib\xbuild\Xamarin\Android\%(OutputLibrary)')">
+    <Content Include="@(_LibZipTarget->'$(_LibZipOutputPath)%(OutputLibrary)')">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Content>
   </ItemGroup>
@@ -43,7 +44,7 @@
      /> 
     <Copy
         SourceFiles="@(_LibZipTarget->'$(IntermediateOutputPath)\%(Identity)\%(OutputLibraryPath)')"
-        DestinationFiles="@(_LibZipTarget->'$(OutputPath)\lib\xbuild\Xamarin\Android\%(OutputLibrary)')"
+        DestinationFiles="@(_LibZipTarget->'$(_LibZipOutputPath)%(OutputLibrary)')"
     />
     <Touch Files="@(Content)" />
   </Target>
@@ -73,6 +74,6 @@
   <Target Name="_CleanBinaries"
       AfterTargets="Clean">
     <RemoveDir Directories="$(IntermediateOutputPath)\%(_LibZipTarget.Identity)" />
-    <Delete Files="@(_LibZipTarget->'$(OutputPath)\lib\xbuild\Xamarin\Android\%(OutputLibrary)')" />
+    <Delete Files="@(_LibZipTarget->'$(_LibZipOutputPath)%(OutputLibrary)')" />
   </Target>
 </Project>

build-tools/mono-runtimes/mono-runtimes.mdproj

@@ -6,11 +6,12 @@
     <ItemType>GenericProject</ItemType>
     <ProjectGuid>{C03E6CF1-7460-4CDC-A4AB-292BBC0F61F2}</ProjectGuid>
   </PropertyGroup>
+  <Import Project="..\..\Configuration.props" />
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <OutputPath>..\..\bin\Debug</OutputPath>
+    <OutputPath>$(XAInstallPrefix)</OutputPath>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-    <OutputPath>..\..\bin\Release</OutputPath>
+    <OutputPath>$(XAInstallPrefix)</OutputPath>
   </PropertyGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.Common.targets" />
   <PropertyGroup>

build-tools/mono-runtimes/mono-runtimes.projitems

@@ -260,7 +260,8 @@
       <BuildEnvironment></BuildEnvironment>
       <ExeSuffix></ExeSuffix>
       <InstallBinaries>true</InstallBinaries>
-      <InstallPath>bin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Darwin:'))">Darwin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Linux:'))">Linux/</InstallPath>
     </_LlvmRuntime>
 
     <_LlvmRuntime Include="llvm64" Condition=" '$(_LlvmNeeded)' != '' And '$(_LlvmCanBuild64)' == 'yes' ">
@@ -271,7 +272,8 @@
       <BuildEnvironment></BuildEnvironment>
       <ExeSuffix></ExeSuffix>
       <InstallBinaries>true</InstallBinaries>
-      <InstallPath>bin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Darwin:'))">Darwin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Linux:'))">Linux/</InstallPath>
     </_LlvmRuntime>
 
     <_LlvmRuntime Include="llvmwin32" Condition=" '$(_LlvmNeeded)' != '' And ($(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':mxe-Win32:')) Or $(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':linux-Win32:'))) ">
@@ -282,7 +284,7 @@
       <BuildEnvironment>PATH="$(AndroidMxeFullPath)\bin:$(PATH)"</BuildEnvironment>
       <ExeSuffix>.exe</ExeSuffix>
       <InstallBinaries>true</InstallBinaries>
-      <InstallPath>lib/mandroid/</InstallPath>
+      <InstallPath></InstallPath>
     </_LlvmRuntime>
 
     <_LlvmRuntime Include="llvmwin64" Condition=" '$(_LlvmNeeded)' != '' And ($(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':mxe-Win64:')) Or $(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':linux-Win64:'))) ">
@@ -293,7 +295,7 @@
       <BuildEnvironment>PATH="$(AndroidMxeFullPath)\bin:$(PATH)"</BuildEnvironment>
       <ExeSuffix>.exe</ExeSuffix>
       <InstallBinaries>false</InstallBinaries>
-      <InstallPath>lib/mandroid/</InstallPath>
+      <InstallPath></InstallPath>
     </_LlvmRuntime>
   </ItemGroup>
 
@@ -318,7 +320,8 @@
       <ExeSuffix></ExeSuffix>
       <BuildEnvironment></BuildEnvironment>
       <ConfigureEnvironment></ConfigureEnvironment>
-      <InstallPath>bin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Darwin:'))">Darwin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Linux:'))">Linux/</InstallPath>
       <CrossMonoName>cross-arm</CrossMonoName>
     </_MonoCrossRuntime>
 
@@ -341,7 +344,8 @@
       <ExeSuffix></ExeSuffix>
       <BuildEnvironment></BuildEnvironment>
       <ConfigureEnvironment></ConfigureEnvironment>
-      <InstallPath>bin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Darwin:'))">Darwin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Linux:'))">Linux/</InstallPath>
       <CrossMonoName>cross-arm64</CrossMonoName>
     </_MonoCrossRuntime>
 
@@ -364,7 +368,8 @@
       <ExeSuffix></ExeSuffix>
       <BuildEnvironment></BuildEnvironment>
       <ConfigureEnvironment></ConfigureEnvironment>
-      <InstallPath>bin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Darwin:'))">Darwin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Linux:'))">Linux/</InstallPath>
       <CrossMonoName>cross-x86</CrossMonoName>
     </_MonoCrossRuntime>
 
@@ -387,7 +392,8 @@
       <ExeSuffix></ExeSuffix>
       <BuildEnvironment></BuildEnvironment>
       <ConfigureEnvironment></ConfigureEnvironment>
-      <InstallPath>bin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Darwin:'))">Darwin/</InstallPath>
+      <InstallPath Condition="$(AndroidSupportedHostJitAbisForConditionalChecks.Contains (':Linux:'))">Linux/</InstallPath>
       <CrossMonoName>cross-x86_64</CrossMonoName>
     </_MonoCrossRuntime>
 
@@ -410,7 +416,7 @@
       <ExeSuffix>.exe</ExeSuffix>
       <BuildEnvironment>PATH="$(AndroidMxeFullPath)\bin:$(PATH)"</BuildEnvironment>
       <ConfigureEnvironment>$(_LlvmConfigureEnvironmentWin32)</ConfigureEnvironment>
-      <InstallPath>lib/mandroid/</InstallPath>
+      <InstallPath></InstallPath>
       <CrossMonoName>cross-arm</CrossMonoName>
     </_MonoCrossRuntime>
 
@@ -433,7 +439,7 @@
       <ExeSuffix>.exe</ExeSuffix>
       <BuildEnvironment>PATH="$(AndroidMxeFullPath)\bin:$(PATH)"</BuildEnvironment>
       <ConfigureEnvironment>$(_LlvmConfigureEnvironmentWin64)</ConfigureEnvironment>
-      <InstallPath>lib/mandroid/</InstallPath>
+      <InstallPath></InstallPath>
       <CrossMonoName>cross-arm64</CrossMonoName>
     </_MonoCrossRuntime>
 
@@ -456,7 +462,7 @@
       <ExeSuffix>.exe</ExeSuffix>
       <BuildEnvironment>PATH="$(AndroidMxeFullPath)\bin:$(PATH)"</BuildEnvironment>
       <ConfigureEnvironment>$(_LlvmConfigureEnvironmentWin32)</ConfigureEnvironment>
-      <InstallPath>lib/mandroid/</InstallPath>
+      <InstallPath></InstallPath>
       <CrossMonoName>cross-x86</CrossMonoName>
     </_MonoCrossRuntime>
 
@@ -479,7 +485,7 @@
       <ExeSuffix>.exe</ExeSuffix>
       <BuildEnvironment>PATH="$(AndroidMxeFullPath)\bin:$(PATH)"</BuildEnvironment>
       <ConfigureEnvironment>$(_LlvmConfigureEnvironmentWin32)</ConfigureEnvironment>
-      <InstallPath>lib/mandroid/</InstallPath>
+      <InstallPath></InstallPath>
       <CrossMonoName>cross-x86_64</CrossMonoName>
     </_MonoCrossRuntime>
   </ItemGroup>