Failed attempt to build sbcl on Android using ecl, which exists both as inofficial Termux package and as Termux-independent Android app
https://gitlab.com/eql/EQL5-Android/
But I believe that ECL only provides a byte compiler since native compilation is done via C.
See also https://www.christopherbiscardi.com/2014/1/10/common-lisp-on-android-running-the-mocl-android-example