This is a preliminary version of the Rust compiler, libraries and tools.

Source layout:

| `librustc/`         | The self-hosted compiler                                  |
| `libstd/`           | The standard library (imported and linked by default)     |
| `libextra/`         | The "extras" library (slightly more peripheral code)      |
| `libsyntax/`        | The Rust parser and pretty-printer                        |
| ------------------- | --------------------------------------------------------- |
| `rt/`               | The runtime system                                        |
| `rt/rust_*.c`       | - The majority of the runtime services                    |
| `rt/isaac`          | - The PRNG used for pseudo-random choices in the runtime  |
| `rt/bigint`         | - The bigint library used for the 'big' type              |
| `rt/uthash`         | - Small hashtable-and-list library for C, used in runtime |
| `rt/sync`           | - Concurrency utils                                       |
| `rt/util`           | - Small utility classes for the runtime.                  |
| `rt/vg`             | - Valgrind headers                                        |
| `rt/msvc`           | - MSVC support                                            |
| ------------------- | --------------------------------------------------------- |
| `test/`             | Testsuite                                                 |
| `test/compile-fail` | - Tests that should fail to compile                       |
| `test/run-fail`     | - Tests that should compile, run and fail                 |
| `test/run-pass`     | - Tests that should compile, run and succeed              |
| `test/bench`        | - Benchmarks and miscellaneous                            |
| `test/pretty`       | - Pretty-printer tests                                    |
| `test/auxiliary`    | - Dependencies of tests                                   |
| ------------------- | --------------------------------------------------------- |
| `compiletest/`      | The test runner                                           |
| ------------------- | --------------------------------------------------------- |
| `librustpkg/`       | The package manager and build system                      |
| ------------------- | --------------------------------------------------------- |
| `librustdoc/`       | The Rust API documentation tool                           |
| ------------------- | --------------------------------------------------------- |
| `llvm/`             | The LLVM submodule                                        |
| ------------------- | --------------------------------------------------------- |
| `libuv/`            | The libuv submodule                                       |
| ------------------- | --------------------------------------------------------- |
| `rustllvm/`         | LLVM support code                                         |
| ------------------- | --------------------------------------------------------- |
| `libfuzzer/`        | A collection of fuzz testers                              |
| ------------------- | --------------------------------------------------------- |
| `etc/`              | Scripts, editors support, misc                            |