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latest rust nightly contains all the bits needed to re-compile libstd

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Ralf Jung
2017-05-30 13:19:15 -07:00
parent dad95474cb
commit cdf7a057f1
1 changed files with 3 additions and 2 deletions
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README.md
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@@ -61,6 +61,8 @@ miri hits a call to such a function, execution terminates. To fix this, it is
possible to compile libstd with full MIR:
```sh
rustup component add rust-src
chmod +x -R ~/.rustup/toolchains/*/lib/rustlib/src/rust/src/jemalloc/include/jemalloc/
cargo install xargo
cd xargo/
RUSTFLAGS='-Zalways-encode-mir' xargo build --target `rustc -vV | egrep '^host: ' | sed 's/^host: //'`
@@ -73,8 +75,7 @@ cargo run --bin miri -- --sysroot ~/.xargo/HOST tests/run-pass/vecs.rs
```
Notice that you will have to re-run the last step of the preparations above when
your toolchain changes (e.g., when you update the nightly). Also, xargo doesn't
currently work with nightlies newer than 2017-04-23.
your toolchain changes (e.g., when you update the nightly).
## Contributing and getting help