- bootstrap_termux.sh installs pkg-config/binutils, builds with make, runs the tests and installs into Termux's $PREFIX/bin. - Makefile drops -lpthread on Android (pthreads are in bionic libc). - TUI assumes UTF-8 on Android: nl_langinfo needs API 26, Termux targets 24. All sources compile for aarch64-linux-android24 (NDK 27).