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A comment on Dietlibc – a Libc optimized for small size. Parent comment

Re:Dietlibc – a Libc optimized for small size by kbumsik on Friday October 18, 2019 @11:32AM (#21292216)
This libc is for Linux, so I guess you can't compile it for a bare-metal system like STM32.
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Re:Dietlibc – a Libc optimized for small size by alexhutcheson on Friday October 18, 2019 @11:52AM (#21292411)
For microcontrollers the most popular open source option is newlib[1].

[1] http://sourceware.org/newlib/

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Re:Dietlibc – a Libc optimized for small size by mlyle on Friday October 18, 2019 @12:32PM (#21292755)
Keith Packard maintains an excellent "picolibc" that I have used recently (and contributed to, a little). It was formerly called newlib-nano, and consists of newlib with the string functions replaced with cheaper (slower) versions from avrlibc and various other slimming changes (e.g. reduction of struct reent stuff, and some locale stuff, by default).

https://github.com/keith-packard/picolibc

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