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2 changes: 2 additions & 0 deletions eng/common/build.ps1
Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@ Param(
[switch] $prepareMachine,
[string] $runtimeSourceFeed = '',
[string] $runtimeSourceFeedKey = '',
[switch] $excludePrereleaseVS,
[switch] $help,
[Parameter(ValueFromRemainingArguments=$true)][String[]]$properties
)
Expand Down Expand Up @@ -65,6 +66,7 @@ function Print-Usage() {
Write-Host " -prepareMachine Prepare machine for CI run, clean up processes after build"
Write-Host " -warnAsError <value> Sets warnaserror msbuild parameter ('true' or 'false')"
Write-Host " -msbuildEngine <value> Msbuild engine to use to run build ('dotnet', 'vs', or unspecified)."
Write-Host " -excludePrereleaseVS Set to exclude build engines in prerelease versions of Visual Studio"
Write-Host ""

Write-Host "Command line arguments not listed above are passed thru to msbuild."
Expand Down
1 change: 1 addition & 0 deletions eng/common/msbuild.ps1
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ Param(
[bool] $nodeReuse = $true,
[switch] $ci,
[switch] $prepareMachine,
[switch] $excludePrereleaseVS,
[Parameter(ValueFromRemainingArguments=$true)][String[]]$extraArgs
)

Expand Down
19 changes: 16 additions & 3 deletions eng/common/tools.ps1
Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,9 @@
# True to use global NuGet cache instead of restoring packages to repository-local directory.
[bool]$useGlobalNuGetCache = if (Test-Path variable:useGlobalNuGetCache) { $useGlobalNuGetCache } else { !$ci }

# True to exclude prerelease versions Visual Studio during build
[bool]$excludePrereleaseVS = if (Test-Path variable:excludePrereleaseVS) { $excludePrereleaseVS } else { $false }

# An array of names of processes to stop on script exit if prepareMachine is true.
$processesToStopOnExit = if (Test-Path variable:processesToStopOnExit) { $processesToStopOnExit } else { @('msbuild', 'dotnet', 'vbcscompiler') }

Expand Down Expand Up @@ -463,7 +466,11 @@ function LocateVisualStudio([object]$vsRequirements = $null){
}

if (!$vsRequirements) { $vsRequirements = $GlobalJson.tools.vs }
$args = @('-latest', '-prerelease', '-format', 'json', '-requires', 'Microsoft.Component.MSBuild', '-products', '*')
$args = @('-latest', '-format', 'json', '-requires', 'Microsoft.Component.MSBuild', '-products', '*')

if (!$excludePrereleaseVS) {
$args += '-prerelease'
}

if (Get-Member -InputObject $vsRequirements -Name 'version') {
$args += '-version'
Expand All @@ -489,7 +496,13 @@ function LocateVisualStudio([object]$vsRequirements = $null){

function InitializeBuildTool() {
if (Test-Path variable:global:_BuildTool) {
return $global:_BuildTool
# If the requested msbuild parameters do not match, clear the cached variables.
if($global:_BuildTool.Contains('ExcludePrereleaseVS') -and $global:_BuildTool.ExcludePrereleaseVS -ne $excludePrereleaseVS) {
Remove-Item variable:global:_BuildTool
Remove-Item variable:global:_MSBuildExe
} else {
return $global:_BuildTool
}
}

if (-not $msbuildEngine) {
Expand Down Expand Up @@ -517,7 +530,7 @@ function InitializeBuildTool() {
ExitWithExitCode 1
}

$buildTool = @{ Path = $msbuildPath; Command = ""; Tool = "vs"; Framework = "net472" }
$buildTool = @{ Path = $msbuildPath; Command = ""; Tool = "vs"; Framework = "net472"; ExcludePrereleaseVS = $excludePrereleaseVS }
} else {
Write-PipelineTelemetryError -Category 'InitializeToolset' -Message "Unexpected value of -msbuildEngine: '$msbuildEngine'."
ExitWithExitCode 1
Expand Down