About C API, not sure:
- http://stackoverflow.com/questions/12111640/android-ndk-and-posix-functions
- http://stackoverflow.com/questions/12111640/what-are-the-most-important-posix-functions-not-available-in-android
- http://stackoverflow.com/questions/27604455/is-android-posix-compatible
- http://unix.stackexchange.com/questions/146971/is-android-compatible-with-the-linux-standard-base
TODO can you use the entire bionic API directly with NDK? How much does it implement?
TODO is Bionic also code-dropped with the rest of Android?
It does not have many CLI utilities, e.g. cal.
There is a BusyBox for Android however: https://play.google.com/store/apps/details?id=stericson.busybox&hl=en But it requires root.
Most utilities are under /system/bin
Google seems to prefer (minimized?) versions BSD utilities. In Android 6 source code:
/system/bin/shwhich is the shell.sh -vsays it ismkshhttps://launchpad.net/mksh, BSD.grepis from BSDsystem/core/toolbox/upstream-netbsd/usr.bin/grepddtoo:system/core/toolbox/upstream-netbsd/bin/dd/dd.c
- https://en.wikipedia.org/wiki/Toybox under
external/toybox/toys/posixprovides most small utilities. It is a BSDbusybox.
So much for the GPL, Google is just like Apple and will gladly fork BSD stuff when the money shows.