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bors 60ffbeb2a4 auto merge of #11973 : dotdash/rust/u64_to_bytes, r=huonw 
LLVM fails to properly optimize the shifts used to convert the source
value to the right endianess. The resulting assembly copies the value
to the stack one byte at a time even when there's no conversion required
(e.g. u64_to_le_bytes on a little endian machine).

Instead of doing the conversion ourselves using shifts, we can use the
existing intrinsics to perform the endianess conversion and then
transmute the value to get a fixed vector of its bytes.

Before:
````
test be_i8  ... bench:     21442 ns/iter (+/- 70)
test be_i16 ... bench:     21447 ns/iter (+/- 45)
test be_i32 ... bench:     23832 ns/iter (+/- 63)
test be_i64 ... bench:     26887 ns/iter (+/- 267)

test le_i8  ... bench:     21442 ns/iter (+/- 56)
test le_i16 ... bench:     21448 ns/iter (+/- 36)
test le_i32 ... bench:     23825 ns/iter (+/- 153)
test le_i64 ... bench:     26271 ns/iter (+/- 138)
````
After:
````
test be_i8  ... bench:     21438 ns/iter (+/- 10)
test be_i16 ... bench:     21441 ns/iter (+/- 15)
test be_i32 ... bench:     19057 ns/iter (+/- 6)
test be_i64 ... bench:     21439 ns/iter (+/- 34)

test le_i8  ... bench:     21438 ns/iter (+/- 19)
test le_i16 ... bench:     21439 ns/iter (+/- 8)
test le_i32 ... bench:     21439 ns/iter (+/- 19)
test le_i64 ... bench:     21438 ns/iter (+/- 22)
````
2014-02-01 10:01:25 -08:00
doc mark the minimum supported Linux kernel version 2014-01-31 21:43:08 -08:00
man remove old rc extension from detection files 2014-01-22 20:39:32 -05:00
mk auto merge of #11879 : thestinger/rust/frame-pointer, r=alexcrichton 2014-01-29 13:36:40 -08:00
src auto merge of #11973 : dotdash/rust/u64_to_bytes, r=huonw 2014-02-01 10:01:25 -08:00
.gitattributes drop the linenoise library 2013-10-16 22:57:51 -04:00
.gitignore extra: move glob to libglob 2014-01-29 17:23:28 +11:00
.gitmodules Update submodules to point to rust-lang repos 2014-01-09 20:21:22 -08:00
.mailmap .mailmap: tolerate different names, emails in shortlog 2013-06-05 23:26:00 +05:30
AUTHORS.txt Update extract-tests.py to use same test directives as rustdoc. 2014-01-28 14:52:36 -06:00
configure Upgrade LLVM 2014-01-29 23:43:39 -08:00
CONTRIBUTING.md Various READMEs and docs cleanup 2014-01-11 19:41:31 +01:00
COPYRIGHT Update some copyright dates 2014-01-08 18:04:43 -08:00
LICENSE-APACHE
LICENSE-MIT Update some copyright dates 2014-01-08 18:04:43 -08:00
Makefile.in Fix a typo in disable rpaths 2014-01-28 11:49:25 -08:00
README.md mark the minimum supported Linux kernel version 2014-01-31 21:43:08 -08:00
RELEASES.txt More 0.9 release notes 2014-01-06 14:52:16 -08:00

README.md

The Rust Programming Language

This is a compiler for Rust, including standard libraries, tools and documentation.

Quick Start

Windows

  1. Download and use the installer and MinGW.
  2. Read the tutorial.
  3. Enjoy!

Note: Windows users can read the detailed getting started notes on the wiki.

Linux / OS X

  1. Make sure you have installed the dependencies:

    • g++ 4.4 or clang++ 3.x
    • python 2.6 or later (but not 3.x)
    • perl 5.0 or later
    • GNU make 3.81 or later
    • curl

  2. Download and build Rust:

    You can either download a tarball or build directly from the repo.

    To build from the tarball do:

     $ curl -O http://static.rust-lang.org/dist/rust-0.9.tar.gz
 $ tar -xzf rust-0.9.tar.gz
 $ cd rust-0.9

    Or to build from the repo do:

     $ git clone https://github.com/mozilla/rust.git
 $ cd rust

    Now that you have Rust's source code, you can configure and build it:

     $ ./configure
 $ make && make install

    Note: You may need to use sudo make install if you do not normally have permission to modify the destination directory. The install locations can be adjusted by passing a --prefix argument to configure. Various other options are also supported, pass --help for more information on them.

    When complete, make install will place several programs into /usr/local/bin: rustc, the Rust compiler; rustdoc, the API-documentation tool, and rustpkg, the Rust package manager and build system.

  3. Read the tutorial.

  4. Enjoy!

Notes

Since the Rust compiler is written in Rust, it must be built by a precompiled "snapshot" version of itself (made in an earlier state of development). As such, source builds require a connection to the Internet, to fetch snapshots, and an OS that can execute the available snapshot binaries.

Snapshot binaries are currently built and tested on several platforms:

  • Windows (7, 8, Server 2008 R2), x86 only
  • Linux (2.6.18 or later, various distributions), x86 and x86-64
  • OSX 10.7 (Lion) or greater, x86 and x86-64

You may find that other platforms work, but these are our officially supported build environments that are most likely to work.

Rust currently needs about 1.5 GiB of RAM to build without swapping; if it hits swap, it will take a very long time to build.

There is a lot more documentation in the wiki.

License

Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.

See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.