- Cygwin
- ELIBC setting for systems that use Cygwin
- Darwin
- ELIBC setting for systems that use the Darwin C library
- SunOS
- ELIBC setting for systems that use the Sun Solaris C library
- Winnt
- ELIBC setting for systems that use Winnt
- bionic
- ELIBC setting for systems that use Android's Bionic C library
- glibc
- ELIBC setting for systems that use the GNU C library
- mingw
- ELIBC setting for systems that use the Minimalist GNU for Windows library
- musl
- ELIBC setting for systems that use the musl C library