Although I have tried neither of lh-bootstrap or mkroot , I noticed that the toolchains of the former is nearly one magnitude smaller than those  of the latter, while both seem to be based on musl and statically linked.
 <https://github.com/landley/mkroot>.  <https://b.zv.io/mcm/bin/>. Out of curiosity, may I ask what is the cause of this huge difference? Additionally, is there a possibility that the two projects join forces, so one becomes an add-on to the other, and minimising wheel reinvention? -- My current OpenPGP key: RSA4096/0x227E8CAAB7AA186C (expires: 2020.10.19) 7077 7781 B859 5166 AE07 0286 227E 8CAA B7AA 186C