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Here's a patch to recognize Android environments. Such environments are "apps" with POSIX-like tools. Today, the most frequently used one is Termux [1][2][3]; on devices with Android versions before 5.0 one can use Terminal-IDE [4][5]. config.sub already supports this environment: $ sh config.sub armv7l-linux-androideabi armv7l-unknown-linux-androideabi I've built many GNU packages in this environment, with the following recipe: CONFIG_SHELL=$PREFIX/bin/sh; export CONFIG_SHELL CC="clang -ferror-limit=0" CXX="clang++ -ferror-limit=0"; export CC CXX ./configure --host=armv7l-linux-androideabi --prefix=$HOME/local The Termux people have compiled or ported more than 1000 packages as well [6]. But the requirement to pass the --host parameter each time is an annoyance. Without it, based only on the results of uname, config.guess guesses $ sh config.guess armv7l-unknown-linux-gnueabi and many configuration results are wrong (because Android has many functions in libc without declaring them in the .h files, depending on the so-called "Android API level"), leading to many compilation errors. With the attached patch, it produces $ sh config.guess armv7l-unknown-linux-androideabi The patch does not include an addition to the config.guess test suite, since the uname values are: $ uname -m armv7l $ uname -r 4.19.127 $ uname -s Linux $ uname -v #1 SMP PREEMPT Tue Apr 4 16:54:58 IST 2023 $ uname -p unknown which maps to armv7l-unknown-linux-gnueabi. [1] https://github.com/termux/termux-app [2] https://f-droid.org/en/packages/com.termux/ [3] https://wiki.termux.com/wiki/Main_Page [4] https://en.wikibooks.org/wiki/Android/Terminal_IDE [5] http://www.spartacusrex.com/terminalide.htm [6] https://github.com/termux/termux-packages/tree/master/packages * config.guess (Linux|GNU|GNU/*): Detect Android. * doc/config.guess.1: Regenerate. Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>