rust/compiler/rustc_codegen_cranelift/build_system/usage.txt

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The build system of cg_clif.
USAGE:
./y.sh prepare [--out-dir DIR] [--download-dir DIR]
./y.sh build [--sysroot none|clif|llvm] [--out-dir DIR] [--download-dir DIR] [--no-unstable-features] [--frozen]
./y.sh test [--sysroot none|clif|llvm] [--out-dir DIR] [--download-dir DIR] [--no-unstable-features] [--frozen] [--skip-test TESTNAME]
./y.sh abi-cafe [--sysroot none|clif|llvm] [--out-dir DIR] [--download-dir DIR] [--no-unstable-features] [--frozen]
./y.sh bench [--sysroot none|clif|llvm] [--out-dir DIR] [--download-dir DIR] [--no-unstable-features] [--frozen]
OPTIONS:
--sysroot none|clif|llvm
Which sysroot libraries to use:
`none` will not include any standard library in the sysroot.
`clif` will build the standard library using Cranelift.
`llvm` will use the pre-compiled standard library of rustc which is compiled with LLVM.
--out-dir DIR
Specify the directory in which the download, build and dist directories are stored.
By default this is the working directory.
--download-dir DIR
Specify the directory in which the download directory is stored. Overrides --out-dir.
--no-unstable-features
Some features are not yet ready for production usage. This option will disable these
features. This includes the JIT mode and inline assembly support.
--frozen
Require Cargo.lock and cache are up to date
--skip-test TESTNAME
Skip testing the TESTNAME test. The test name format is the same as config.txt.
--use-backend NAME
Use the existing Cranelift (or other) backend of the rustc with which we built.
Warning: This is meant for use in rust's CI only!
REQUIREMENTS:
* Rustup: By default rustup is used to install the right nightly version. If you don't want to
use rustup, you can manually install the nightly version indicated by rust-toolchain.toml and
point the CARGO, RUSTC and RUSTDOC env vars to the right executables.
* Git: Git is used for downloading test repos and applying patches.
* [Hyperfine](https://github.com/sharkdp/hyperfine/): Used for benchmarking with `./y.sh bench`.