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Passing `--pretty flowgraph=<NODEID>` makes rustc print a control flow graph. In pratice, you will also need to pass the additional option: `-o <FILE>` to emit output to a `.dot` file for graphviz. (You can only print the flow-graph for a particular block in the AST.) ---- An interesting implementation detail is the way the code puts both the node index (`cfg::CFGIndex`) and a reference to the payload (`cfg::CFGNode`) into the single `Node` type that is used for labelling and walking the graph. I had once mistakenly thought that I only wanted the `cfg::CFGNode`, but for labelling, you really want the cfg index too, rather than e.g. trying to use the `ast::NodeId` as the label (which breaks down e.g. due to `ast::DUMMY_NODE_ID`). ---- As a drive-by fix, I had to fix `rustc::middle::cfg::construct` interface to reflect changes that have happened on the master branch while I was getting this integrated into the compiler. (The next commit actually adds tests of the `--pretty flowgraph` functionality, so that should ensure that the `rustc::middle::cfg` code does not go stale again.)
The Rust Programming Language
This is a compiler for Rust, including standard libraries, tools and documentation.
Quick Start
- Download a binary installer for your platform.
- Read the tutorial.
- Enjoy!
Note: Windows users can read the detailed getting started notes on the wiki.
Building from Source
-
Make sure you have installed the dependencies:
g++4.7 orclang++3.xpython2.6 or later (but not 3.x)perl5.0 or later- GNU
make3.81 or later curlgit
-
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-nightly.tar.gz $ tar -xzf rust-nightly.tar.gz $ cd rust-nightlyOr to build from the repo do:
$ git clone https://github.com/mozilla/rust.git $ cd rustNow that you have Rust's source code, you can configure and build it:
$ ./configure $ make && make installNote: You may need to use
sudo make installif you do not normally have permission to modify the destination directory. The install locations can be adjusted by passing a--prefixargument toconfigure. Various other options are also supported, pass--helpfor more information on them.When complete,
make installwill place several programs into/usr/local/bin:rustc, the Rust compiler, andrustdoc, the API-documentation tool. 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, 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.