alt Hacker NewsThere are very few C libraries which compile, stock, against the matrix of toolchains, ABIs, and operating systems that this library does. For the subset of machines which run, I don't know, 99.9% of all instructions (i.e. x86_64 + aarch64, Linux + Darwin + Windows), the library just works. This is a definition of portability. Why would portability be a binary of supporting every possible system or being hard tied to a single one?
The natural comparisons are libraries like glibc and newlib, which do support lots of architectures and more importantly make porting to new architectures or taking advantage of platform features pretty straightforward.