ELLCC (http://ellcc.org), my clang/LLVM based cross development tool chain for
ARM, Microblaze, Mips, Power PC, and X86, now incorporates musl
(http://www.etalabs.net/musl) as its standard C library for Linux. musl is a
MIT licensed, highly POSIX compliant library offering high performance and a
small foot print. I spent several weeks evaluating musl before deciding to use
it in ELLCC. The clarity and consistency of its code base and the quality of
its design convinced me that musl would be an ideal addition to ELLCC. If
you're looking for a non-GPL library solution, I highly recommend musl.