uClibc
https://uclibc.org/downloads/Glibc_vs_uClibc_Differences.txtuClibc and Glibc are not the same -- there are a number of differences which may or may not cause you problems. This document attempts to list these differences and, when completed, will contain a full list of all relevant 1) uClibc is smaller than glibc. interface, allowing applications that compile with glibc to easily compile with
uClibc - Wikipedia
https://en.wikipedia.org/wiki/UClibcIn computing, uClibc (sometimes written µClibc) is a small C standard library intended for Linux kernel-based operating systems for embedded systems and mobile devices. uClibc was written to support μClinux, a version of Linux not requiring a memory management unit and thus suited for microcontrollers (uCs; the "u" is a Latin script typographical approximation - not a proper romanization, …