Benchs of gcc version under Termux on Samsung Galaxy S20 Ultra 5G:
Total time (ms) : 11329
Nodes searched : 7050445
Nodes/second : 622336
Total time (ms) : 11269
Nodes searched : 7050445
Nodes/second : 625649
Benchs of ndk clang version under linux virtual machine:
Total time (ms) : 11582
Nodes searched : 7050445
Nodes/second : 608741
Total time (ms) : 11754
Nodes searched : 7050445
Nodes/second : 599833
I don't think the Termux way worths the effort, especially in view of a possible package removing as it happened for the "pointless" github one, while the method shown here https://chess.massimilianogoi.com/articles/30-09-20-How-To-Compile-Stockfish-And-Stockfish-like-Programs-For-Android/ is likely universal and easier to do, in general.
But I have to do that it's cool as f... to compile Stockfish laid down on the couch by just tapping on my phone.
Damn, these objects are really addictive, especially for me being struck by discal hernias.