File permissions - cant build from source?

[henryjfry]

I want to build software to run on my recal box.

Why cant I change file permissions in a tarball I just extracted??

I ran:

mount -o remount,rw /

And yet file permissions wont change when I attempt to

chmod +x -R ./

Its extremely frustrating that you have artifically locked down recalbox so much.
Im not a linux neophyte, just let me build and install software if i want to.