posix

# C bindings for Crystal

Follows the IEEE Std 1003.1, 2013 Edition (The Open Group Base Specifications
Issue 7) as much as libc implementations do, along with some common additions
that are required by Crystal.

Bindings are automatically generated with CrystalLib from C headers.


## Targets

Crystal only supports the `x86` and `x86_64` targets for now, but we should be
capable to generate bindings for whatever POSIX C implementation. Each target
will be checked when headers have been verified to be compliant.

- Android
  - [ ] `arm`
  - [ ] `arm64`
  - [ ] `mips`
  - [ ] `mips64`
  - [ ] `mips`
  - [ ] `mips64`
  - [ ] `x86`
  - [ ] `x86_64`

- FreeBSD
  - [ ] `x86`
  - [x] `x86_64`

- iOS
  - [ ] `arm`
  - [ ] `arm64`

- Linux
  - [x] gnu (`x86`, `x86_64`)
  - [x] musl (`x86`, `x86_64`)

- Mac OSX
  - [x] darwin (`x86_64`)

- Windows
  - [ ] cygwin

## Headers

- [ ] `aio.h`
- [x] `arpa/inet.h`
- [ ] `assert.h`
- [ ] `complex.h`
- [x] `cpio.h`
- [ ] `ctype.h`
- [x] `dirent.h`
- [x] `dlfcn.h`
- [x] `errno.h`
- [x] `fcntl.h`
- [x] `fenv.h`
- [x] `float.h`
- [ ] `fmtmsg.h`
- [x] `fnmatch.h`
- [x] `ftw.h`
- [x] `glob.h`
- [x] `grp.h`
- [x] `iconv.h`
- [ ] `inttypes.h`
- [ ] `iso646.h`
- [x] `langinfo.h`
- [x] `libgen.h`
- [x] `limits.h`
- [x] `locale.h`
- [x] `math.h`
- [x] `monetary.h`
- [ ] `mqueue.h`
- [ ] `ndbm.h`
- [x] `net/if.h`
- [x] `netdb.h`
- [x] `netinet/in.h`
- [x] `netinet/tcp.h`
- [x] `nl_types.h`
- [x] `poll.h`
- [x] `pthread.h`
- [x] `pwd.h`
- [x] `regex.h`
- [x] `sched.h`
- [x] `search.h`
- [x] `semaphore.h`
- [x] `setjmp.h`
- [x] `signal.h`
- [x] `spawn.h`
- [ ] `stdarg.h`
- [ ] `stdbool.h`
- [x] `stddef.h`
- [x] `stdint.h`
- [x] `stdio.h`
- [x] `stdlib.h`
- [x] `string.h`
- [x] `strings.h`
- [ ] `stropts.h`
- [x] `sys/ipc.h`
- [x] `sys/mman.h`
- [ ] `sys/msg.h`
- [x] `sys/resource.h`
- [x] `sys/select.h`
- [x] `sys/sem.h`
- [x] `sys/shm.h`
- [x] `sys/socket.h`
- [x] `sys/stat.h`
- [ ] `sys/statvfs.h`
- [x] `sys/time.h`
- [x] `sys/times.h`
- [x] `sys/types.h`
- [x] `sys/uio.h`
- [x] `sys/un.h`
- [x] `sys/utsname.h`
- [x] `sys/wait.h`
- [x] `syslog.h`
- [ ] `tar.h`
- [x] `termios.h`
- [ ] `tgmath.h`
- [x] `time.h`
- [ ] `trace.h`
- [x] `ulimit.h`
- [x] `unistd.h`
- [x] `utmpx.h`
- [ ] `wchar.h`
- [ ] `wctype.h`
- [ ] `wordexp.h`