buildroot does not compile

The build script should not run more than once.

You will need to edit the script.

You need to check if you have the cross gcc build in the staging dirs.

But I would suggest you to use the prebuild binary, and uClinux-dist.

Which are eaiser for beginner.

I don't want you to spend too much time on buildroot.

You can try buildroot later, when you get more understanding of the tools.