Migrating from Wix V3 to V4

[gdams]

Hi there,

I'm in the process of trying to upgrade the Eclipse Temurin installers to use Wix V4. I am struggling to determine what to do with my existing heat.exe/candle.exe/light.exe commands which I've been previously running from a batch script:

    ECHO HEAT
    @ECHO ON
    "!WIX!bin\heat.exe" dir "!REPRO_DIR!" -out %WORKDIR%!OUTPUT_BASE_FILENAME!-Files.wxs -gg -sfrag -scom -sreg -srd -ke -cg "AppFiles" -var var.ProductMajorVersion -var var.ProductMinorVersion -var var.ProductVersionString -var var.MSIProductVersion -var var.ReproDir -dr INSTALLDIR -platform !PLATFORM!
    IF ERRORLEVEL 1 (
        ECHO Failed to generating Windows Installer XML Source files ^(.wxs^)
        GOTO FAILED
    )
    @ECHO OFF

    ECHO CANDLE
    @ECHO ON
    "!WIX!bin\candle.exe" -arch !PLATFORM! -out %WORKDIR% %WORKDIR%!OUTPUT_BASE_FILENAME!-Main.wxs %WORKDIR%!OUTPUT_BASE_FILENAME!-Files.wxs !ITW_WXS! -ext WixUIExtension -ext WixUtilExtension -dIcedTeaWebDir="!ICEDTEAWEB_DIR!" -dOutputBaseFilename="!OUTPUT_BASE_FILENAME!" -dProductSku="!PRODUCT_SKU!" -dProductMajorVersion="!PRODUCT_MAJOR_VERSION!" -dProductMinorVersion="!PRODUCT_MINOR_VERSION!" -dProductVersionString="!PRODUCT_SHORT_VERSION!" -dMSIProductVersion="!MSI_PRODUCT_VERSION!" -dProductId="!PRODUCT_ID!" -dProductUpgradeCode="!PRODUCT_UPGRADE_CODE!" -dReproDir="!REPRO_DIR!" -dSetupResourcesDir="!SETUP_RESOURCES_DIR!" -dCulture="!CULTURE!" -dJVM="!PACKAGE_TYPE!"
    IF ERRORLEVEL 1 (
        ECHO Failed to preprocesses and compiles WiX source files into object files ^(.wixobj^)
        dir /s /b /o:n %WORKDIR%
        GOTO FAILED
    )
    @ECHO OFF

    ECHO LIGHT
    @ECHO ON
    "!WIX!bin\light.exe" %WORKDIR%!OUTPUT_BASE_FILENAME!-Main.wixobj %WORKDIR%!OUTPUT_BASE_FILENAME!-Files.wixobj !ITW_WIXOBJ! !MSI_VALIDATION_OPTION! -cc !CACHE_FOLDER! -ext WixUIExtension -ext WixUtilExtension -spdb -out "ReleaseDir\!OUTPUT_BASE_FILENAME!.msi" -loc "%WORKDIR%!OUTPUT_BASE_FILENAME!-!PRODUCT_SKU!.Base.!CULTURE!.wxl" -loc "%WORKDIR%!OUTPUT_BASE_FILENAME!-!PRODUCT_SKU!.!PACKAGE_TYPE!.!CULTURE!.wxl" -cultures:!CULTURE!
    IF ERRORLEVEL 1 (
        ECHO Failed to links and binds one or more .wixobj files and creates a Windows Installer database ^(.msi or .msm^)
        dir /s /b /o:n
        GOTO FAILED
    )
    @ECHO OFF

Any help here would be most appreciated, the full source code for the installer can be seen at https://github.com/adoptium/installer/tree/master/wix (specifically those commands are run in the Build.OpenJDK_generic.cmd file.