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Alex Crichton 52b835c5e7 Store metadata separately in rlib files Right now whenever an rlib file is linked against, all of the metadata from the rlib is pulled in to the final staticlib or binary. The reason for this is that the metadata is currently stored in a section of the object file. Note that this is intentional for dynamic libraries in order to distribute metadata bundled with static libraries. This commit alters the situation for rlib libraries to instead store the metadata in a separate file in the archive. In doing so, when the archive is passed to the linker, none of the metadata will get pulled into the result executable. Furthermore, the metadata file is skipped when assembling rlibs into an archive. The snag in this implementation comes with multiple output formats. When generating a dylib, the metadata needs to be in the object file, but when generating an rlib this needs to be separate. In order to accomplish this, the metadata variable is inserted into an entirely separate LLVM Module which is then codegen'd into a different location (foo.metadata.o). This is then linked into dynamic libraries and silently ignored for rlib files. While changing how metadata is inserted into archives, I have also stopped compressing metadata when inserted into rlib files. We have wanted to stop compressing metadata, but the sections it creates in object file sections are apparently too large. Thankfully if it's just an arbitrary file it doesn't matter how large it is. I have seen massive reductions in executable sizes, as well as staticlib output sizes (to confirm that this is all working).		2013-12-09 08:25:58 -08:00
doc	rewrite part of the tutorial	2013-12-04 16:55:03 -05:00
man	remove the rusti command	2013-10-16 22:54:38 -04:00
mk	Register new snapshots	2013-12-07 23:02:39 -08:00
src	Store metadata separately in rlib files	2013-12-09 08:25:58 -08:00
.gitattributes	drop the linenoise library	2013-10-16 22:57:51 -04:00
.gitignore	Link rustllvm statically, and distribute a static snapshot	2013-12-06 20:51:17 -08:00
.gitmodules	Point gyp submodule toward github	2013-10-25 20:23:53 -07:00
.mailmap	.mailmap: tolerate different names, emails in shortlog	2013-06-05 23:26:00 +05:30
AUTHORS.txt	Update AUTHORS.txt	2013-09-24 16:26:27 -07:00
configure	Make the ccache-free case look like the ccache case.	2013-12-02 19:25:14 +01:00
CONTRIBUTING.md	syntax: Add the Bug Report HOWTO URL to the ICE message	2013-10-21 12:11:24 -07:00
COPYRIGHT	add gitattributes and fix whitespace issues	2013-05-03 20:01:42 -04:00
LICENSE-APACHE
LICENSE-MIT	tidy version numbers and copyright dates	2013-04-01 16:15:49 -07:00
Makefile.in	Register new snapshots	2013-12-07 23:02:39 -08:00
README.md	Update version numbers to 0.8	2013-09-21 16:25:08 -07:00
RELEASES.txt	remove the rusti command	2013-10-16 22:54:38 -04:00

README.md

The Rust Programming Language

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

Quick Start

Windows

Download and use the installer.
Read the tutorial.
Enjoy!

Note: Windows users should read the detailed getting started notes on the wiki. Even when using the binary installer the Windows build requires a MinGW installation, the precise details of which are not discussed here.

Linux / OS X

Install the prerequisites (if not already installed)
- 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
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-0.8.tar.gz
 $ tar -xzf rust-0.8.tar.gz
 $ cd rust-0.8
```
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
```
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.
Read the tutorial.
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, Server 2008 R2), x86 only
Linux (various distributions), x86 and x86-64
OSX 10.6 ("Snow Leopard") or greater, x86 and x86-64

You may find that other platforms work, but these are our "tier 1" supported build environments that are most likely to work.

Rust currently needs about 1.8G of RAM to build without swapping; if it hits swap, it will take a very long time to build.

There is lots 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.