I have several warnings about installation when executing my batch file. Is it a problem?

See joined files “batch.txt + batch.bat”. We will need to provide you with a “SITE/config” file and a “rtl/src/system.spc” that matches your current compiler’s configuration. We ship by default with a configuration that matches a typical 32-bit Intel x 86 compilers. You are using 64-bit integers, so that will require a different package System and a SITE/config file that supports 64-bit integers.