Imported Upstream version 5.2.0.175

Former-commit-id: bb0468d0f257ff100aa895eb5fe583fb5dfbf900

external/linker/corebuild/bootstrap.ps1

@@ -0,0 +1,82 @@
+param
+(
+    [Parameter(Mandatory=$false)][string]$RepositoryRoot = $PSScriptRoot,
+    [Parameter(Mandatory=$false)][string]$ToolsLocalPath = (Join-Path $RepositoryRoot "Tools"),
+    [Parameter(Mandatory=$false)][string]$CliLocalPath = (Join-Path $ToolsLocalPath "dotnetcli"),
+    [Parameter(Mandatory=$false)][string]$SharedFrameworkSymlinkPath = (Join-Path $ToolsLocalPath "dotnetcli\shared\Microsoft.NETCore.App\version"),
+    [Parameter(Mandatory=$false)][string]$SharedFrameworkVersion = "<auto>",
+    [Parameter(Mandatory=$false)][string]$Architecture = "<auto>",
+    [Parameter(Mandatory=$false)][string]$DotNetInstallBranch = "rel/1.0.0",
+    [switch]$Force = $false
+)
+
+$rootCliVersion = Join-Path $RepositoryRoot ".cliversion"
+$bootstrapComplete = Join-Path $ToolsLocalPath "bootstrap.complete"
+
+# if the force switch is specified delete the semaphore file if it exists
+if ($Force -and (Test-Path $bootstrapComplete))
+{
+    del $bootstrapComplete
+}
+
+# if the semaphore file exists and is identical to the specified version then exit
+if ((Test-Path $bootstrapComplete) -and !(Compare-Object (Get-Content $rootCliVersion) (Get-Content $bootstrapComplete)))
+{
+    exit 0
+}
+
+$initCliScript = "dotnet-install.ps1"
+$dotnetInstallPath = Join-Path $ToolsLocalPath $initCliScript
+
+# blow away the tools directory so we can start from a known state
+if (Test-Path $ToolsLocalPath)
+{
+    # if the bootstrap.ps1 script was downloaded to the tools directory don't delete it
+    rd -recurse -force $ToolsLocalPath -exclude "bootstrap.ps1"
+}
+else
+{
+    mkdir $ToolsLocalPath | Out-Null
+}
+
+# download CLI boot-strapper script
+Invoke-WebRequest "https://raw.githubusercontent.com/dotnet/cli/$DotNetInstallBranch/scripts/obtain/dotnet-install.ps1" -OutFile $dotnetInstallPath
+
+# load the version of the CLI
+$dotNetCliVersion = Get-Content $rootCliVersion
+
+if (-Not (Test-Path $CliLocalPath))
+{
+    mkdir $CliLocalPath | Out-Null
+}
+
+# now execute the script
+Write-Host "$dotnetInstallPath -Version $dotNetCliVersion -InstallDir $CliLocalPath -Architecture ""$Architecture"""
+Invoke-Expression "$dotnetInstallPath -Version $dotNetCliVersion -InstallDir $CliLocalPath -Architecture ""$Architecture"""
+if ($LastExitCode -ne 0)
+{
+    Write-Output "The .NET CLI installation failed with exit code $LastExitCode"
+    exit $LastExitCode
+}
+
+# create a junction to the shared FX version directory. this is
+# so we have a stable path to dotnet.exe regardless of version.
+$runtimesPath = Join-Path $CliLocalPath "shared\Microsoft.NETCore.App"
+if ($SharedFrameworkVersion -eq "<auto>")
+{
+    $SharedFrameworkVersion = Get-ChildItem $runtimesPath -Directory | Sort-Object | Select-Object -First 1 | % { New-Object System.Version($_) }
+}
+$junctionTarget = Join-Path $runtimesPath $SharedFrameworkVersion
+$junctionParent = Split-Path $SharedFrameworkSymlinkPath -Parent
+if (-Not (Test-Path $junctionParent))
+{
+    mkdir $junctionParent | Out-Null
+}
+if (-Not (Test-Path $SharedFrameworkSymlinkPath))
+{
+    cmd.exe /c mklink /j $SharedFrameworkSymlinkPath $junctionTarget | Out-Null
+}
+
+# write semaphore file
+copy $rootCliVersion $bootstrapComplete
+exit 0