improve SDK incremental builds by not running redist-installer layout generation on inner loop builds (#44687)

Author: baronfel

build.cmd

@@ -4,7 +4,9 @@ echo %* | findstr /C:"-pack" >nul
 if %errorlevel%==0 (
     set PackInstaller=
 ) else (
+    REM disable crossgen for inner-loop builds to save a ton of time
     set PackInstaller=/p:PackInstaller=false
+    set DISABLE_CROSSGEN=true
 )
 powershell -NoLogo -NoProfile -ExecutionPolicy ByPass -command "& """%~dp0eng\common\build.ps1""" -restore -build -nativeToolsOnMachine -msbuildEngine dotnet %PackInstaller% %*"
 exit /b %ErrorLevel%

build.sh

@@ -9,6 +9,8 @@ done
 ScriptRoot="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
 
 if [[ "$@" != *"-pack"* ]]; then
+  # disable crossgen for inner-loop builds to save a ton of time
+  export DISABLE_CROSSGEN=true
   packInstallerFlag="/p:PackInstaller=false"
 else
   packInstallerFlag=

src/Installer/redist-installer/targets/GenerateLayout.targets

@@ -623,7 +623,7 @@
 
   <Target Name="GenerateInternalLayout"
           DependsOnTargets="GenerateLayout"
-          BeforeTargets="AfterBuild">
+          BeforeTargets="AfterBuild" >
     <RemoveDir Directories="$(SdkInternalLayoutPath)" />
     <MakeDir Directories="$(SdkInternalLayoutPath)" />