[android] conditionally build DS2 for the Android SDK

utils/build.ps1

@@ -62,6 +62,10 @@ The version number of the Windows SDK to be used.
 Overrides the value resolved by the Visual Studio command prompt.
 If no such Windows SDK is installed, it will be downloaded from nuget.
 
+.PARAMETER IncludeDS2
+Include the ds2 remote debug server in the SDK.
+This component is currently only supported in Android builds.
+
 .PARAMETER SkipBuild
 If set, does not run the build phase.
 
@@ -125,6 +129,7 @@ param(
   [switch] $SkipBuild = $false,
   [switch] $SkipRedistInstall = $false,
   [switch] $SkipPackaging = $false,
+  [switch] $IncludeDS2 = $false,
   [string[]] $Test = @(),
   [string] $Stage = "",
   [string] $BuildTo = "",
@@ -335,6 +340,14 @@ function Get-AndroidNDKPath {
   return $androidNDKPath
 }
 
+function Get-FlexExecutable {
+  return Join-Path -Path $BinaryCache -ChildPath "win_flex_bison\win_flex.exe"
+}
+
+function Get-BisonExecutable {
+  return Join-Path -Path $BinaryCache -ChildPath "win_flex_bison\win_bison.exe"
+}
+
 function Get-InstallDir($Arch) {
   if ($Arch -eq $HostArch) {
     $ProgramFilesName = "Program Files"
@@ -446,6 +459,7 @@ enum BuildComponent {
   Compilers
   FoundationMacros
   TestingMacros
+  RegsGen2
 }
 
 function Get-BuildProjectBinaryCache([BuildComponent]$Project) {
@@ -739,6 +753,15 @@ function Fetch-Dependencies {
     Extract-ZipFile -ZipFileName "android-ndk-$AndroidNDKVersion-windows.zip" -BinaryCache $BinaryCache -ExtractPath "android-ndk-$AndroidNDKVersion" -CreateExtractPath $false
   }
 
+  if ($IncludeDS2) {
+    $WinFlexBisonVersion = "2.5.25"
+    $WinFlexBisonURL = "https://github.com/lexxmark/winflexbison/releases/download/v$WinFlexBisonVersion/win_flex_bison-$WinFlexBisonVersion.zip"
+    $WinFlexBisonHash = "8D324B62BE33604B2C45AD1DD34AB93D722534448F55A16CA7292DE32B6AC135"
+    DownloadAndVerify $WinFlexBisonURL "$BinaryCache\win_flex_bison-$WinFlexBisonVersion.zip" $WinFlexBisonHash
+
+    Extract-ZipFile -ZipFileName "win_flex_bison-$WinFlexBisonVersion.zip" -BinaryCache $BinaryCache -ExtractPath "win_flex_bison"
+  }
+
   if ($WinSDKVersion) {
     try {
       # Check whether VsDevShell can already resolve the requested Windows SDK Version
@@ -1490,6 +1513,39 @@ function Build-XML2([Platform]$Platform, $Arch) {
     }
 }
 
+function Build-RegsGen2($Arch) {
+  $ArchName = $Arch.LLVMName
+
+  Build-CMakeProject `
+    -Src $SourceCache\ds2\Tools\RegsGen2 `
+    -Bin "$(Get-BuildProjectBinaryCache RegsGen2)" `
+    -Arch $Arch `
+    -BuildTargets default `
+    -UseMSVCCompilers C,CXX `
+    -Defines @{
+      BISON_EXECUTABLE = "$(Get-BisonExecutable)";
+      FLEX_EXECUTABLE = "$(Get-FlexExecutable)";
+    }
+}
+
+function Build-DS2([Platform]$Platform, $Arch) {
+  $ArchName = $Arch.LLVMTarget.Replace("$AndroidAPILevel","")
+
+  Build-CMakeProject `
+    -Src "$SourceCache\ds2" `
+    -Bin "$($Arch.BinaryCache)\$Platform\ds2" `
+    -InstallTo "$($Arch.PlatformInstallRoot)\Developer\Library\$ArchName" `
+    -Arch $Arch `
+    -Platform $Platform `
+    -BuildTargets default `
+    -Defines @{
+      CMAKE_SYSTEM_NAME = $Platform.ToString();
+      DS2_REGSGEN2 = "$(Get-BuildProjectBinaryCache RegsGen2)/regsgen2.exe";
+      BISON_EXECUTABLE = "$(Get-BisonExecutable)";
+      FLEX_EXECUTABLE = "$(Get-FlexExecutable)";
+    }
+}
+
 function Build-CURL([Platform]$Platform, $Arch) {
   $ArchName = $Arch.LLVMName
 
@@ -2459,6 +2515,9 @@ if (-not $SkipBuild) {
   if ($IsCrossCompiling) {
     Invoke-BuildStep Build-Compilers -Build $BuildArch
   }
+  if ($IncludeDS2) {
+    Invoke-BuildStep Build-RegsGen2 $BuildArch
+  }
 
   Invoke-BuildStep Build-CMark $HostArch
   Invoke-BuildStep Build-Compilers $HostArch
@@ -2491,6 +2550,9 @@ if (-not $SkipBuild) {
   }
 
   foreach ($Arch in $AndroidSDKArchs) {
+    if ($IncludeDS2) {
+      Invoke-BuildStep Build-DS2 Android $Arch
+    }
     Invoke-BuildStep Build-ZLib Android $Arch
     Invoke-BuildStep Build-XML2 Android $Arch
     Invoke-BuildStep Build-CURL Android $Arch