diff options
Diffstat (limited to 'src/doc/rustc-dev-guide')
| -rw-r--r-- | src/doc/rustc-dev-guide/src/building/bootstrapping/debugging-bootstrap.md | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/doc/rustc-dev-guide/src/building/bootstrapping/debugging-bootstrap.md b/src/doc/rustc-dev-guide/src/building/bootstrapping/debugging-bootstrap.md index c9c0d64a604..9c5ebbd36c4 100644 --- a/src/doc/rustc-dev-guide/src/building/bootstrapping/debugging-bootstrap.md +++ b/src/doc/rustc-dev-guide/src/building/bootstrapping/debugging-bootstrap.md @@ -123,6 +123,12 @@ if [#96176][cleanup-compiler-for] is resolved. [cleanup-compiler-for]: https://github.com/rust-lang/rust/issues/96176 +### Rendering step graph + +When you run bootstrap with the `BOOTSTRAP_TRACING` environment variable configured, bootstrap will automatically output a DOT file that shows all executed steps and their dependencies. The files will have a prefix `bootstrap-steps`. You can use e.g. `xdot` to visualize the file or e.g. `dot -Tsvg` to convert the DOT file to a SVG file. + +A separate DOT file will be outputted for dry-run and non-dry-run execution. + ### Using `tracing` in bootstrap Both `tracing::*` macros and the `tracing::instrument` proc-macro attribute need to be gated behind `tracing` feature. Examples: |