On Monday, 19 June 2017 at 21:45:56 UTC, Moritz Maxeiner wrote:
On Monday, 19 June 2017 at 21:35:56 UTC, Steven Schveighoffer
wrote:
IIRC, Tango did not depend on libc at all. It only used system
calls. So it certainly is possible.
How did they invoke those system calls? They are usually access
via libc on POSIX systems, so you don't have to implement
accessing e.g. vdso on Linux yourself.
Tango just didn't use C abstractions (`FILE*`, say), but rather
it would call functions such `read(2)`, `write(2)`, `seek(2)`,
etc. and implement buffering/seeking/etc manually. So, the
library just declared `extern (C) read (...);`/`extern (C)
write`.. and expected for the right library (which doesn't have
to be libc, just the one that exposes these syscall wrappers)
linked.
