README.md

   1 # The Rust Programming Language
   2
   3 This is the main source code repository for [Rust]. It contains the compiler,
   4 standard library, and documentation.
   5
   6 [Rust]: https://www.rust-lang.org
   7
   8 ## Quick Start
   9 [quick-start]: #quick-start
  10
  11 Read ["Installation"] from [The Book].
  12
  13 ["Installation"]: https://doc.rust-lang.org/book/second-edition/ch01-01-installation.html
  14 [The Book]: https://doc.rust-lang.org/book/index.html
  15
  16 ## Building from Source
  17 [building-from-source]: #building-from-source
  18
  19 ### Building on *nix
  20 1. Make sure you have installed the dependencies:
  21
  22    * `g++` 4.7 or later or `clang++` 3.x or later
  23    * `python` 2.7 (but not 3.x)
  24    * GNU `make` 3.81 or later
  25    * `cmake` 3.4.3 or later
  26    * `curl`
  27    * `git`
  28
  29 2. Clone the [source] with `git`:
  30
  31    ```sh
  32    $ git clone https://github.com/rust-lang/rust.git
  33    $ cd rust
  34    ```
  35
  36 [source]: https://github.com/rust-lang/rust
  37
  38 3. Build and install:
  39
  40     ```sh
  41     $ ./x.py build && sudo ./x.py install
  42     ```
  43
  44     > ***Note:*** Install locations can be adjusted by copying the config file
  45     > from `./config.toml.example` to `./config.toml`, and
  46     > adjusting the `prefix` option under `[install]`. Various other options, such
  47     > as enabling debug information, are also supported, and are documented in
  48     > the config file.
  49
  50     When complete, `sudo ./x.py install` will place several programs into
  51     `/usr/local/bin`: `rustc`, the Rust compiler, and `rustdoc`, the
  52     API-documentation tool. This install does not include [Cargo],
  53     Rust's package manager, which you may also want to build.
  54
  55 [Cargo]: https://github.com/rust-lang/cargo
  56
  57 ### Building on Windows
  58 [building-on-windows]: #building-on-windows
  59
  60 There are two prominent ABIs in use on Windows: the native (MSVC) ABI used by
  61 Visual Studio, and the GNU ABI used by the GCC toolchain. Which version of Rust
  62 you need depends largely on what C/C++ libraries you want to interoperate with:
  63 for interop with software produced by Visual Studio use the MSVC build of Rust;
  64 for interop with GNU software built using the MinGW/MSYS2 toolchain use the GNU
  65 build.
  66
  67 #### MinGW
  68 [windows-mingw]: #windows-mingw
  69
  70 [MSYS2][msys2] can be used to easily build Rust on Windows:
  71
  72 [msys2]: https://msys2.github.io/
  73
  74 1. Grab the latest [MSYS2 installer][msys2] and go through the installer.
  75
  76 2. Run `mingw32_shell.bat` or `mingw64_shell.bat` from wherever you installed
  77    MSYS2 (i.e. `C:\msys64`), depending on whether you want 32-bit or 64-bit
  78    Rust. (As of the latest version of MSYS2 you have to run `msys2_shell.cmd
  79    -mingw32` or `msys2_shell.cmd -mingw64` from the command line instead)
  80
  81 3. From this terminal, install the required tools:
  82
  83    ```sh
  84    # Update package mirrors (may be needed if you have a fresh install of MSYS2)
  85    $ pacman -Sy pacman-mirrors
  86
  87    # Install build tools needed for Rust. If you're building a 32-bit compiler,
  88    # then replace "x86_64" below with "i686". If you've already got git, python,
  89    # or CMake installed and in PATH you can remove them from this list. Note
  90    # that it is important that you do **not** use the 'python2' and 'cmake'
  91    # packages from the 'msys2' subsystem. The build has historically been known
  92    # to fail with these packages.
  93    $ pacman -S git \
  94                make \
  95                diffutils \
  96                tar \
  97                mingw-w64-x86_64-python2 \
  98                mingw-w64-x86_64-cmake \
  99                mingw-w64-x86_64-gcc
 100    ```
 101
 102 4. Navigate to Rust's source code (or clone it), then build it:
 103
 104    ```sh
 105    $ ./x.py build && ./x.py install
 106    ```
 107
 108 #### MSVC
 109 [windows-msvc]: #windows-msvc
 110
 111 MSVC builds of Rust additionally require an installation of Visual Studio 2013
 112 (or later) so `rustc` can use its linker. Make sure to check the “C++ tools”
 113 option.
 114
 115 With these dependencies installed, you can build the compiler in a `cmd.exe`
 116 shell with:
 117
 118 ```sh
 119 > python x.py build
 120 ```
 121
 122 Currently building Rust only works with some known versions of Visual Studio. If
 123 you have a more recent version installed the build system doesn't understand
 124 then you may need to force rustbuild to use an older version. This can be done
 125 by manually calling the appropriate vcvars file before running the bootstrap.
 126
 127 ```
 128 CALL "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\amd64\vcvars64.bat"
 129 python x.py build
 130 ```
 131
 132 #### Specifying an ABI
 133 [specifying-an-abi]: #specifying-an-abi
 134
 135 Each specific ABI can also be used from either environment (for example, using
 136 the GNU ABI in powershell) by using an explicit build triple. The available
 137 Windows build triples are:
 138 - GNU ABI (using GCC)
 139     - `i686-pc-windows-gnu`
 140     - `x86_64-pc-windows-gnu`
 141 - The MSVC ABI
 142     - `i686-pc-windows-msvc`
 143     - `x86_64-pc-windows-msvc`
 144
 145 The build triple can be specified by either specifying `--build=<triple>` when
 146 invoking `x.py` commands, or by copying the `config.toml` file (as described
 147 in Building From Source), and modifying the `build` option under the `[build]`
 148 section.
 149
 150 ### Configure and Make
 151 [configure-and-make]: #configure-and-make
 152
 153 While it's not the recommended build system, this project also provides a
 154 configure script and makefile (the latter of which just invokes `x.py`).
 155
 156 ```sh
 157 $ ./configure
 158 $ make && sudo make install
 159 ```
 160
 161 When using the configure script, the generated `config.mk` file may override the
 162 `config.toml` file. To go back to the `config.toml` file, delete the generated
 163 `config.mk` file.
 164
 165 ## Building Documentation
 166 [building-documentation]: #building-documentation
 167
 168 If you’d like to build the documentation, it’s almost the same:
 169
 170 ```sh
 171 $ ./x.py doc
 172 ```
 173
 174 The generated documentation will appear under `doc` in the `build` directory for
 175 the ABI used. I.e., if the ABI was `x86_64-pc-windows-msvc`, the directory will be
 176 `build\x86_64-pc-windows-msvc\doc`.
 177
 178 ## Notes
 179 [notes]: #notes
 180
 181 Since the Rust compiler is written in Rust, it must be built by a
 182 precompiled "snapshot" version of itself (made in an earlier state of
 183 development). As such, source builds require a connection to the Internet, to
 184 fetch snapshots, and an OS that can execute the available snapshot binaries.
 185
 186 Snapshot binaries are currently built and tested on several platforms:
 187
 188 | Platform / Architecture        | x86 | x86_64 |
 189 |--------------------------------|-----|--------|
 190 | Windows (7, 8, Server 2008 R2) | ✓   | ✓      |
 191 | Linux (2.6.18 or later)        | ✓   | ✓      |
 192 | OSX (10.7 Lion or later)       | ✓   | ✓      |
 193
 194 You may find that other platforms work, but these are our officially
 195 supported build environments that are most likely to work.
 196
 197 Rust currently needs between 600MiB and 1.5GiB of RAM to build, depending on platform.
 198 If it hits swap, it will take a very long time to build.
 199
 200 There is more advice about hacking on Rust in [CONTRIBUTING.md].
 201
 202 [CONTRIBUTING.md]: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md
 203
 204 ## Getting Help
 205 [getting-help]: #getting-help
 206
 207 The Rust community congregates in a few places:
 208
 209 * [Stack Overflow] - Direct questions about using the language.
 210 * [users.rust-lang.org] - General discussion and broader questions.
 211 * [/r/rust] - News and general discussion.
 212
 213 [Stack Overflow]: https://stackoverflow.com/questions/tagged/rust
 214 [/r/rust]: https://reddit.com/r/rust
 215 [users.rust-lang.org]: https://users.rust-lang.org/
 216
 217 ## Contributing
 218 [contributing]: #contributing
 219
 220 To contribute to Rust, please see [CONTRIBUTING](CONTRIBUTING.md).
 221
 222 Rust has an [IRC] culture and most real-time collaboration happens in a
 223 variety of channels on Mozilla's IRC network, irc.mozilla.org. The
 224 most popular channel is [#rust], a venue for general discussion about
 225 Rust. And a good place to ask for help would be [#rust-beginners].
 226
 227 [IRC]: https://en.wikipedia.org/wiki/Internet_Relay_Chat
 228 [#rust]: irc://irc.mozilla.org/rust
 229 [#rust-beginners]: irc://irc.mozilla.org/rust-beginners
 230
 231 ## License
 232 [license]: #license
 233
 234 Rust is primarily distributed under the terms of both the MIT license
 235 and the Apache License (Version 2.0), with portions covered by various
 236 BSD-like licenses.
 237
 238 See [LICENSE-APACHE](LICENSE-APACHE), [LICENSE-MIT](LICENSE-MIT), and
 239 [COPYRIGHT](COPYRIGHT) for details.