fix pwsh support

build.cmd

@@ -42,6 +42,7 @@ echo found Powershell && goto start
 set powershell=pwsh
 where pwsh > nul 2>&1
 if ERRORLEVEL 1 goto :nopwsh
+set PWSHV7=1
 echo found pwsh && goto start
 :nopwsh
 echo Powershell or pwsh not found, please install it.
@@ -72,13 +73,17 @@ IF NOT EXIST external\rpclib\rpclib-2.2.1 (
 	ECHO Downloading rpclib
 	ECHO *****************************************************************************************
 	@echo on
-	%powershell% -command "& { [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; iwr https://github.com/madratman/rpclib/archive/v2.2.1.zip -OutFile external\rpclib.zip }"
+    if "%PWSHV7%" == "" (
+        %powershell% -command "& { [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; iwr https://github.com/madratman/rpclib/archive/v2.2.1.zip -OutFile external\rpclib.zip }"
+    ) else (
+	    %powershell% -command "iwr https://github.com/madratman/rpclib/archive/v2.2.1.zip -OutFile external\rpclib.zip"
+    )
 	@echo off
 
 	REM //remove any previous versions
 	rmdir external\rpclib /q /s
 
-	%powershell% -command "& { Expand-Archive -Path external\rpclib.zip -DestinationPath external\rpclib }"
+	%powershell% -command "Expand-Archive -Path external\rpclib.zip -DestinationPath external\rpclib"
 	del external\rpclib.zip /q
 
 	REM //Don't fail the build if the high-poly car is unable to be downloaded
@@ -137,10 +142,14 @@ IF NOT EXIST Unreal\Plugins\AirSim\Content\VehicleAdv\SUV\v1.2.0 (
         @echo on
         REM %powershell% -command "& { Start-BitsTransfer -Source https://github.com/Microsoft/AirSim/releases/download/v1.2.0/car_assets.zip -Destination suv_download_tmp\car_assets.zip }"
         REM %powershell% -command "& { (New-Object System.Net.WebClient).DownloadFile('https://github.com/Microsoft/AirSim/releases/download/v1.2.0/car_assets.zip', 'suv_download_tmp\car_assets.zip') }"
-        %powershell% -command "& { [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; iwr https://github.com/Microsoft/AirSim/releases/download/v1.2.0/car_assets.zip -OutFile suv_download_tmp\car_assets.zip }"
+        if "%PWSHV7%" == "" (
+            %powershell% -command "& { [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; iwr https://github.com/Microsoft/AirSim/releases/download/v1.2.0/car_assets.zip -OutFile suv_download_tmp\car_assets.zip }"
+        ) else (
+            %powershell% -command "iwr https://github.com/Microsoft/AirSim/releases/download/v1.2.0/car_assets.zip -OutFile suv_download_tmp\car_assets.zip"
+        )
         @echo off
 		rmdir /S /Q Unreal\Plugins\AirSim\Content\VehicleAdv\SUV
-        %powershell% -command "& { Expand-Archive -Path suv_download_tmp\car_assets.zip -DestinationPath Unreal\Plugins\AirSim\Content\VehicleAdv }"
+        %powershell% -command "Expand-Archive -Path suv_download_tmp\car_assets.zip -DestinationPath Unreal\Plugins\AirSim\Content\VehicleAdv"
         rmdir suv_download_tmp /q /s
 
         REM //Don't fail the build if the high-poly car is unable to be downloaded
@@ -154,9 +163,13 @@ IF NOT EXIST Unreal\Plugins\AirSim\Content\VehicleAdv\SUV\v1.2.0 (
 REM //---------- get Eigen library ----------
 IF NOT EXIST AirLib\deps mkdir AirLib\deps
 IF NOT EXIST AirLib\deps\eigen3 (
-    %powershell% -command "& { [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; iwr https://gitlab.com/libeigen/eigen/-/archive/3.3.7/eigen-3.3.7.zip -OutFile eigen3.zip }"
-    %powershell% -command "& { Expand-Archive -Path eigen3.zip -DestinationPath AirLib\deps }"
-    %powershell% -command "& { Move-Item -Path AirLib\deps\eigen* -Destination AirLib\deps\del_eigen }"
+    if "%PWSHV7%" == "" (
+        %powershell% -command "& { [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; iwr https://gitlab.com/libeigen/eigen/-/archive/3.3.7/eigen-3.3.7.zip -OutFile eigen3.zip }"
+    ) else (
+        %powershell% -command "iwr https://gitlab.com/libeigen/eigen/-/archive/3.3.7/eigen-3.3.7.zip -OutFile eigen3.zip"
+    )
+    %powershell% -command "Expand-Archive -Path eigen3.zip -DestinationPath AirLib\deps"
+    %powershell% -command "Move-Item -Path AirLib\deps\eigen* -Destination AirLib\deps\del_eigen"
     REM move AirLib\deps\eigen* AirLib\deps\del_eigen
     mkdir AirLib\deps\eigen3
     move AirLib\deps\del_eigen\Eigen AirLib\deps\eigen3\Eigen