Update install_script to support VS2022.

install_script.bat

@@ -41,7 +41,11 @@ if "%PROCESSOR_ARCHITECTURE%"=="AMD64" (
 REM Check if already running in an environment with VS setup
 if defined VCINSTALLDIR (
     if defined VisualStudioVersion (
-        if "%VisualStudioVersion%"=="16.0" (
+        if "%VisualStudioVersion%"=="17.0" (
+            echo Existing Visual Studio 2022 environment detected...
+            set MSVC_VER=16
+            goto MSVCVarsDone
+        ) else if "%VisualStudioVersion%"=="16.0" (
             echo Existing Visual Studio 2019 environment detected...
             set MSVC_VER=16
             goto MSVCVarsDone
@@ -81,6 +85,16 @@ if not exist "%SCRIPTDIR%\vswhere.exe" (
 :VSwhereDetection
 REM Use vswhere to list detected installs
 for /f "usebackq tokens=* delims=" %%i in (`"%SCRIPTDIR%\vswhere.exe" -prerelease -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath`) do (
+    for /f "delims=" %%a in ('echo %%i ^| find "2022"') do (
+        if not "%%a"=="" (
+            echo Visual Studio 2022 environment detected...
+            call "%~0" "17" "%%i"
+            if not ERRORLEVEL 1 (
+                set MSVC17=1
+                set MSVCFOUND=1
+            )
+        )
+    )
     for /f "delims=" %%a in ('echo %%i ^| find "2019"') do (
         if not "%%a"=="" (
             echo Visual Studio 2019 environment detected...
@@ -220,7 +234,9 @@ if "%SYSARCH%"=="32" (
     goto Terminate
 )
 REM Call the required vcvars file in order to setup up build locations
-if "%MSVC_VER%"=="16" (
+if "%MSVC_VER%"=="17" (
+    set VCVARS=%2\VC\Auxiliary\Build\vcvars%SYSARCH%.bat
+) else if "%MSVC_VER%"=="16" (
     set VCVARS=%2\VC\Auxiliary\Build\vcvars%SYSARCH%.bat
 ) else if "%MSVC_VER%"=="15" (
     set VCVARS=%2\VC\Auxiliary\Build\vcvars%SYSARCH%.bat
@@ -250,7 +266,9 @@ if not ERRORLEVEL 1 (
 )
 set /p MSBUILDDIR=<"%SCRIPTDIR%\msbuild.txt"
 del /F /Q "%SCRIPTDIR%\msbuild.txt" >nul 2>&1
-if "%MSVC_VER%"=="16" (
+if "%MSVC_VER%"=="17" (
+    set VCTargetsPath="..\..\..\Microsoft\VC\v170\BuildCustomizations"
+) else if "%MSVC_VER%"=="16" (
     set VCTargetsPath="..\..\Microsoft\VC\v160\BuildCustomizations"
 ) else if "%MSVC_VER%"=="15" (
     set VCTargetsPath="..\..\..\Common7\IDE\VC\VCTargets\BuildCustomizations"
@@ -264,8 +282,16 @@ if "%MSVC_VER%"=="16" (
 
 REM Convert the relative targets path to an absolute one
 set CURRDIR=%CD%
-pushd %MSBUILDDIR%
-pushd %VCTargetsPath%
+pushd %MSBUILDDIR% 2>nul
+if %ERRORLEVEL% neq 0 (
+    echo Error: Failed to get correct msbuild path!
+    goto Terminate
+)
+pushd %VCTargetsPath% 2>nul
+if %ERRORLEVEL% neq 0 (
+    echo Error: Unknown VCTargetsPath path!
+    goto Terminate
+)
 set VCTargetsPath=%CD%
 popd
 popd