RSoC: Relibc

content/news/rsoc-relibc.md

++++
+title = "RSoC: Relibc"
+author = "jD91mZM2"
+date = "2018-07-24T21:18:54+02:00"
++++
+
+# Introduction
+
+Hello! It's me, the tokio guy! Last blog post was the last interesting news I
+had about tokio. The only tokio-related things I've done after that is rebasing
+and getting [Unix Sockets on
+Redox](https://github.com/rust-lang/rust/pull/51553) merged, which just [got
+stabilized](https://github.com/rust-lang/rust/pull/52656). Instead, I've been
+working on relibc.
+
+# Relibc
+
+## gcc_complete
+
+Starting off, gcc_complete did not compile. Like usual, Jeremy was super quick
+with fixing a few things, but I managed to catch up when we got to scanf being
+missing, and told him I could implement that. [My first relibc
+PR](https://gitlab.redox-os.org/redox-os/relibc/merge_requests/134)! After
+that, I added empty locale functions, copy pasted musl's setjmp assembly code.
+Finally, the last few things to get gcc_complete working
+[here](https://gitlab.redox-os.org/redox-os/relibc/merge_requests/146)
+
+It turns out we still have some unimplemented functions being used by
+gcc_complete. I'm currently trying to phase out those, and after
+
+ - Jeremy: [system](https://gitlab.redox-os.org/redox-os/relibc/commit/c2cdb451f57f18b10be25fa551f654f927eddb84)
+ - stratact: [tmpfile](https://gitlab.redox-os.org/redox-os/relibc/merge_requests/154)
+
+ - [localtime](https://gitlab.redox-os.org/redox-os/relibc/commit/b7e11afd2f331c92bed1203ccb14300449eb52e3) and [mktime](https://gitlab.redox-os.org/redox-os/relibc/commit/b7e11afd2f331c92bed1203ccb14300449eb52e3)
+ - [getenv and putenv](https://gitlab.redox-os.org/redox-os/relibc/commit/019011f029d7dd0c6a9c3cdd1c22e81cec083dee),
+ - [strftime](https://gitlab.redox-os.org/redox-os/relibc/commit/b83d1c7ff0d8bad8c446ec3637d5424171011cb9)
+ - [basic signal support](https://gitlab.redox-os.org/redox-os/relibc/commit/ecd8aca6d6b939ba1d77fc4776b9c5b8df4471ad)
+
+we only have tmpfile left, which stratact
+[implemented](https://gitlab.redox-os.org/redox-os/relibc/merge_requests/154).
+
+## redox itself
+
+**I had nothing to do with this**, but you need to know something awesome.
+
+Jeremy [got relibc to compile
+redox](https://gitlab.redox-os.org/redox-os/relibc/compare/7e6e1b16...919ae09d)!
+(which also required some [kernel
+changes](https://gitlab.redox-os.org/redox-os/kernel/compare/master...relibc))
+
+I was surprised when he said he'd do this since I thought it was my job, but I
+*was* stuck and I'm very impressed to see how it all turned out! I am able to
+run orbital and normal pure-rust programs with relibc, although it seems
+slower. Openssl does not yet work, which leads us to:
+
+## openssl
+
+I also want to get openssl to compile. For that, we were missing
+[sockets](https://gitlab.redox-os.org/redox-os/relibc/commit/d3f6985ee91677380da5d558133e4fbcfade5bbd).
+Then, sajattack is working on
+[netdb](https://gitlab.redox-os.org/redox-os/relibc/merge_requests/156), which
+I'm thankful I don't have to do because it involves dns parsing and everything!
+We're probably going to need more signal functions to be implemented, but I
+haven't gotten to that stage of compiling yet.
+
+When openssl compiles, we should sooner or later have a relatively complete
+version of redox compiling with relibc!