@if "%_echo%" neq "on" echo off
setlocal

if defined VisualStudioVersion goto :Run

set _VSWHERE="%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe"
if exist %_VSWHERE% (
  for /f "usebackq tokens=*" %%i in (`%_VSWHERE% -latest -property installationPath`) do set _VSCOMNTOOLS=%%i\Common7\Tools
)
if not exist "%_VSCOMNTOOLS%" set _VSCOMNTOOLS=%VS140COMNTOOLS%
if not exist "%_VSCOMNTOOLS%" (
    echo Error: Visual Studio 2015 or 2017 required.
    echo        Please see https://github.com/dotnet/corefx/blob/master/Documentation/project-docs/developer-guide.md for build instructions.
    exit /b 1
)

set VSCMD_START_DIR="%~dp0"
call "%_VSCOMNTOOLS%\VsDevCmd.bat"

:Run
powershell -NoProfile -ExecutionPolicy unrestricted -Command "%~dp0run.ps1 -- %*"
exit /b %ERRORLEVEL%
@if "%_echo%" neq "on" echo off
setlocal

if defined VisualStudioVersion goto :Run

set _VSWHERE="%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe"
if exist %_VSWHERE% (
  for /f "usebackq tokens=*" %%i in (`%_VSWHERE% -latest -prerelease -property installationPath`) do set _VSCOMNTOOLS=%%i\Common7\Tools
)
if not exist "%_VSCOMNTOOLS%" set _VSCOMNTOOLS=%VS140COMNTOOLS%
if not exist "%_VSCOMNTOOLS%" (
    echo Error: Visual Studio 2015 or 2017 required.
    echo        Please see https://github.com/dotnet/corefx/blob/master/Documentation/project-docs/developer-guide.md for build instructions.
    exit /b 1
)

set VSCMD_START_DIR="%~dp0"
call "%_VSCOMNTOOLS%\VsDevCmd.bat"

:Run
powershell -NoProfile -ExecutionPolicy unrestricted -Command "%~dp0run.ps1 -- %*"
exit /b %ERRORLEVEL%
Add prerelease check to vswhere to support dogfood VS builds.
Add prerelease check to vswhere to support dogfood VS builds.
