The demo is about running the script task5_amd64.sh, which finishes in about half a minute and results in a build of the Tiny C Compiler 0.9.27, which is a rather complete, but not so tiny, compiler for the C programming language. Linux is (largely) written in C.

Building live-bootstrap up to and including TCC-0.9.27 takes 11 minutes and 38 seconds on my laptop when building for 32-bits Intel target (also known as x86). The demo build the same for 64-bits Intel target (also known AMD64), fails after 13 minutes and 38 seconds. It is not yet supported.

Before I implemented some optimizations, my solution took 1 minute and 22 seconds to build.

Bootstapping refers to pulling yourself up by your bootstraps and it is often used for building something from scratch.

To build Linux from sources, you need a C compiler. But what if you cannot trust the compiler. This idea is to start with a very small program and build all the tools to build a C compiler. This is what the live-bootstrap project is about.