qt-everywhere-src-5.15.1/qtbase/mkspecs/features/incredibuild_xge.prf

contains(TEMPLATE, "vc.*") {
    # The VCPROJ generator will replace the \r\h with the coded \r\n: 

    EOC = $$escape_expand(\\r\\h)

    for(xge, INCREDIBUILD_XGE) {
        $${xge}.commands = Rem IncrediBuild_AllowRemote $$EOC Rem IncrediBuild_OutputFile $$system_path($${xge}.output) $$EOC $$eval($${xge}.commands)
    }
}