Go to file

bors 24a840d489 Auto merge of #22971 - lifthrasiir:metadata-reform, r=huonw This is a series of individual but correlated changes to the metadata format. The changes are significant enough that it (finally) bumps the metadata encoding version. In brief, they altogether reduce the total size of stage1 binaries by 27% (!!!!). Almost every low-hanging fruit has been considered and fixed; see the individual commits for details. Detailed library (not just metadata) size changes for x86_64-unknown-linux-gnu stage1 binaries (baseline being `3a96d6a981`): ```` before after delta path --------- --------- ------ -------------------------------- 1706146 1050412 38.4% liballoc-4e7c5e5c.rlib 398576 152454 61.8% libarena-4e7c5e5c.rlib 71441 56892 20.4% libarena-4e7c5e5c.so 14424754 5084102 64.8% libcollections-4e7c5e5c.rlib 39143186 14743118 62.3% libcore-4e7c5e5c.rlib 195574 188150 3.8% libflate-4e7c5e5c.rlib 153123 152603 0.3% libflate-4e7c5e5c.so 477152 215262 54.9% libfmt_macros-4e7c5e5c.rlib 77728 66601 14.3% libfmt_macros-4e7c5e5c.so 1216936 684104 43.8% libgetopts-4e7c5e5c.rlib 207846 181116 12.9% libgetopts-4e7c5e5c.so 349722 147530 57.8% libgraphviz-4e7c5e5c.rlib 60196 49197 18.3% libgraphviz-4e7c5e5c.so 729842 259906 64.4% liblibc-4e7c5e5c.rlib 349358 247014 29.3% liblog-4e7c5e5c.rlib 88878 83163 6.4% liblog-4e7c5e5c.so 1968508 732840 62.8% librand-4e7c5e5c.rlib 1968204 696326 64.6% librbml-4e7c5e5c.rlib 283207 206589 27.1% librbml-4e7c5e5c.so 72369394 46401230 35.9% librustc-4e7c5e5c.rlib 11941372 10498483 12.1% librustc-4e7c5e5c.so 2717894 1983272 27.0% librustc_back-4e7c5e5c.rlib 501900 464176 7.5% librustc_back-4e7c5e5c.so 15058 12588 16.4% librustc_bitflags-4e7c5e5c.rlib 4008268 2961912 26.1% librustc_borrowck-4e7c5e5c.rlib 837550 785633 6.2% librustc_borrowck-4e7c5e5c.so 6473348 6095470 5.8% librustc_driver-4e7c5e5c.rlib 1448785 1433945 1.0% librustc_driver-4e7c5e5c.so 95483688 94779704 0.7% librustc_llvm-4e7c5e5c.rlib 43516815 43487809 0.1% librustc_llvm-4e7c5e5c.so 938140 817236 12.9% librustc_privacy-4e7c5e5c.rlib 182653 176563 3.3% librustc_privacy-4e7c5e5c.so 4390288 3543284 19.3% librustc_resolve-4e7c5e5c.rlib 872981 831824 4.7% librustc_resolve-4e7c5e5c.so 18176426 14795426 18.6% librustc_trans-4e7c5e5c.rlib 3657354 3480026 4.8% librustc_trans-4e7c5e5c.so 16815076 13868862 17.5% librustc_typeck-4e7c5e5c.rlib 3274439 3123898 4.6% librustc_typeck-4e7c5e5c.so 21372308 14890582 30.3% librustdoc-4e7c5e5c.rlib 4501971 4172202 7.3% librustdoc-4e7c5e5c.so 8055028 2951044 63.4% libserialize-4e7c5e5c.rlib 958101 710016 25.9% libserialize-4e7c5e5c.so 30810208 15160648 50.8% libstd-4e7c5e5c.rlib 6819003 5967485 12.5% libstd-4e7c5e5c.so 58850950 31949594 45.7% libsyntax-4e7c5e5c.rlib 9060154 7882423 13.0% libsyntax-4e7c5e5c.so 1474310 1062102 28.0% libterm-4e7c5e5c.rlib 345577 323952 6.3% libterm-4e7c5e5c.so 2827854 1643056 41.9% libtest-4e7c5e5c.rlib 517811 452519 12.6% libtest-4e7c5e5c.so 2274106 1761240 22.6% libunicode-4e7c5e5c.rlib --------- --------- ------ -------------------------------- 499359187 363465583 27.2% total ```` Some notes: * Uncompressed metadata compacts very well. It is less visible for compressed metadata but still it achieves about 5~10% reduction. * Every commit is designed to reduce the metadata in one way. There is absolutely no negative impact associated to changes (that's why the table above doesn't contain a minus delta). * I've confirmed that this compiles through `make all`, making it almost correct. Other platforms have to be tested though. * Oh, I'll rebase this as soon as I have spare time, but I guess this needs an extensive review anyway. * I haven't rigorously checked the encoder and decoder performance. I tried to minimize the impact (some encodings are actually simpler than the original), but I'm not sure. Fixes #2743, #9303 (partially) and #21482.		2015-03-03 08:06:59 +00:00
man	rustc: Recognize `-L framework=foo`	2015-02-04 13:54:49 -08:00
mk	Separate most of rustc::lint::builtin into a separate crate.	2015-02-28 15:33:59 +11:00
src	Auto merge of #22971 - lifthrasiir:metadata-reform, r=huonw	2015-03-03 08:06:59 +00:00
.gitattributes	webfonts: proper fix	2014-07-08 20:29:36 +02:00
.gitignore	gitignore: Add the autogenerated/downloaded unicode data files.	2014-08-03 17:32:53 +10:00
.gitmodules	Use rust-installer for installation	2014-12-11 17:14:17 -08:00
.mailmap	Update .mailmap	2014-10-23 23:01:31 +02:00
.travis.yml	Allow travis to use newer-faster infrastructure for building. http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/	2015-01-01 02:00:29 -05:00
AUTHORS.txt	Update AUTHORS.txt and RELEASES.md	2015-02-18 17:02:34 -08:00
CONTRIBUTING.md	Fixes "Code of Conduct" Link	2015-02-18 20:53:00 -07:00
COPYRIGHT	copyright: update paths and entries	2015-01-22 15:45:47 +01:00
LICENSE-APACHE	Update license, add license boilerplate to most files. Remainder will follow.	2012-12-03 17:12:14 -08:00
LICENSE-MIT	Bump LICENSE copyright year	2015-01-17 10:51:07 -05:00
Makefile.in	mk: Add tidy commands to 'make tips'	2015-02-05 14:37:16 -08:00
README.md	Miscellaneous README changes	2015-02-21 23:40:09 -08:00
RELEASES.md	Fix frow_raw/from_raw typo	2015-02-21 13:14:17 +01:00
configure	Drop support for clang < 3.2	2015-02-28 17:53:12 +01:00

README.md

The Rust Programming Language

This is a compiler for Rust, including standard libraries, tools and documentation. Rust is a systems programming language that is fast, memory safe and multithreaded, but does not employ a garbage collector or otherwise impose significant runtime overhead.

Quick Start

Read "Installing Rust" from The Book.

Building from Source

Make sure you have installed the dependencies:
- g++ 4.7 or clang++ 3.x
- python 2.6 or later (but not 3.x)
- GNU make 3.81 or later
- curl
- git

Clone the source with git:

$ git clone https://github.com/rust-lang/rust.git
$ cd rust

Build and install:
```
$ ./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, and rustdoc, the API-documentation tool. This install does not include Cargo, Rust's package manager, which you may also want to build.

Building on Windows

MSYS2 can be used to easily build Rust on Windows:

Grab the latest MSYS2 installer and go through the installer.

From the MSYS2 terminal, install the mingw64 toolchain and other required tools.

# Choose one based on platform:
$ pacman -S mingw-w64-i686-toolchain
$ pacman -S mingw-w64-x86_64-toolchain

$ pacman -S base-devel

Run mingw32_shell.bat or mingw64_shell.bat from wherever you installed MYSY2 (i.e. C:\msys), depending on whether you want 32-bit or 64-bit Rust.
Navigate to Rust's source code, configure and build it:
```
$ ./configure
$ make && make install
```

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 and x86-64 (64-bit support added in Rust 0.12.0)
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 more advice about hacking on Rust in CONTRIBUTING.md.

Getting Help

The Rust community congregates in a few places:

Stack Overflow - Direct questions about using the language.
users.rust-lang.org - General discussion and broader questions.
/r/rust - News and general discussion.

Contributing

To contribute to Rust, please see CONTRIBUTING.md.

Rust has an IRC culture and most real-time collaboration happens in a variety of channels on Mozilla's IRC network, irc.mozilla.org. The most popular channel is #rust, a venue for general discussion about Rust, and a good place to ask for help.

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.

README.md Unescape Escape