I am not very familiar with the process of running Panda on Android/termux, but I would try creating a wheel (add --wheel to the makepanda.py flags) and installing that (pip install -U path/to/panda3d*.whl).
I am not very familiar with the process of running Panda on Android/termux, but I would try creating a wheel (add --wheel to the makepanda.py flags) and installing that (pip install -U path/to/panda3d*.whl).