[Java.Interop.BootstrapTasks] Filter out invalid JDKs (#1278)

@jonpryor's developer machines are a "weird", with a macOS arm64 box
containing the directories:
* `$HOME/android-toolchain/jdk-17`
* `$HOME/android-toolchain/jdk-17.x64`
Meanwhile, `XAPrepareJdkLocations.GetXAPrepareJdks()` within
dotnet/android-tools looks for all directories matching the glob
`$HOME/android-toolchains/jdk*`, and thus finds both.
For some reason, the JDK that `dotnet build -t:Prepare *.sln` winds
up using by default is the the `jdk-17.x64` directory (😱), which
cannot be loaded into an arm64 process. This results in errors from
`dotnet build`:
EXEC : error JM4003: jnimarshalmethod-gen: Unable to create Java VM […/dotnet/java-interop/samples/Hello-NativeAOTFromJNI/Hello-NativeAOTFromJNI.csproj]
System.DllNotFoundException: Unable to load shared library '$HOME/android-toolchain/jdk-17.x64/lib/libjli.dylib' or one of its dependencies. In order to help diagnose loading problems, consider setting the DYLD_PRINT_LIBRARIES environment variable:
dlopen($HOME/android-toolchain/jdk-17.x64/lib/libjli.dylib, 0x0001): tried: '$HOME/android-toolchain/jdk-17.x64/lib/libjli.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e' or 'arm64')), '/System/Volumes/Preboot/Cryptexes/OS/$HOME/android-toolchain/jdk-17.x64/lib/libjli.dylib' (no such file), '$HOME/android-toolchain/jdk-17.x64/lib/libjli.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e' or 'arm64'))
at System.Runtime.InteropServices.NativeLibrary.Load(String libraryPath)
at Java.Interop.NativeLibraryJvmLibraryHandler.LoadJvmLibrary(String path) in $HOME/Developer/src/dotnet/java-interop/src/Java.Runtime.Environment/Java.Interop/JreRuntime.cs:line 231
at Java.Interop.JreRuntime.CreateJreVM(JreRuntimeOptions builder) in $HOME/Developer/src/dotnet/java-interop/src/Java.Runtime.Environment/Java.Interop/JreRuntime.cs:line 104
at Java.Interop.JreRuntime..ctor(JreRuntimeOptions builder) in $HOME/Developer/src/dotnet/java-interop/src/Java.Runtime.Environment/Java.Interop/JreRuntime.cs:line 162
at Java.Interop.JreRuntimeOptions.CreateJreVM() in $HOME/Developer/src/dotnet/java-interop/src/Java.Runtime.Environment/Java.Interop/JreRuntime.cs:line 66
at Xamarin.Android.Tools.JniMarshalMethodGenerator.App.CreateJavaVM(String jvmDllPath) in $HOME/Developer/src/dotnet/java-interop/tools/jnimarshalmethod-gen/App.cs:line 302
…
…/dotnet/java-interop/samples/Hello-NativeAOTFromJNI/Hello-NativeAOTFromJNI.targets(44,5):
error MSB3073: The command ""/usr/local/share/dotnet/dotnet" "…/dotnet/java-interop/bin/Debug-net8.0//jnimarshalmethod-gen.dll" "…/dotnet/java-interop/samples/Hello-NativeAOTFromJNI/bin/Debug/Hello-NativeAOTFromJNI.dll" -v -v --keeptemp -L "…/dotnet/java-interop/samples/Hello-NativeAOTFromJNI/bin/Debug/" "
exited with code 3. […/dotnet/java-interop/samples/Hello-NativeAOTFromJNI/Hello-NativeAOTFromJNI.csproj]
Instead of doing the "obvious" of removing `jdk.x64` or renaming it
so it doesn't match the glob `jdk*`, update
`JdkInfo.GetKnownSystemJdkInfos()` and `JdkInfo.GetSupportedJdkInfos()`
to filter out JDKs that cannot be loaded into the current process.
This nicely filters out `jdk-17.x64`, allowing dotnet/java-interop
to build successfully.

Author: jonpryor

build-tools/Java.Interop.BootstrapTasks/Java.Interop.BootstrapTasks.csproj

@@ -3,6 +3,7 @@
  <PropertyGroup>
  <TargetFramework>netstandard2.0</TargetFramework>
  <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+ <LangVersion>11.0</LangVersion>
  </PropertyGroup>
 
  <ImportProject="..\..\TargetFrameworkDependentValues.props" />

build-tools/Java.Interop.BootstrapTasks/Java.Interop.BootstrapTasks/JdkInfo.cs

@@ -5,6 +5,7 @@
 usingSystem.Diagnostics;
 usingSystem.IO;
 usingSystem.Linq;
+usingSystem.Runtime.InteropServices;
 usingSystem.Text;
 usingSystem.Text.RegularExpressions;
 usingSystem.Xml.Linq;
@@ -46,6 +47,7 @@ public override bool Execute ()
 .Where(j =>maxVersion!=null?j.Version<=maxVersion:true)
 .Where(j =>j.IncludePath.Any());
 varjdk=explicitJdks.Concat(defaultJdks)
+.Where(j =>JdkRunsOnHost(j))
 .FirstOrDefault();
 
 if(jdk==null){
@@ -71,6 +73,19 @@ public override bool Execute ()
 return!Log.HasLoggedErrors;
 }
 
+staticboolJdkRunsOnHost(XATInfojdk)
+{
+varcputype=RuntimeInformation.ProcessArchitecture;
+if(jdk.ReleaseProperties.TryGetValue("OS_ARCH",outvararch)){
+return(cputype,arch)switch{
+(Architecture.Arm64,"aarch64")=>true,
+(Architecture.X64,"x86_64")=>true,
+ _ =>false,
+};
+}
+returntrue;
+}
+
 XATInfo[]GetJdkRoots()
 {
 XATInfojdk=null;