Building of packages that require a .sh file to be executed

hi all,

I've been playing around with building the netdata package and it seems that in the build environment there is not a way to chmod or run a .sh file (from the lfs file) that is needed to build netadata. Is this by design or is there something I am missing? i have the lfs file setup to download all the resources per the offline install guidelines but it still requires their .sh file to run.