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Fix command to run custom rustc #317

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Merged
merged 1 commit into from
Aug 17, 2023
Merged

Fix command to run custom rustc #317

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10 changes: 7 additions & 3 deletions Readme.md
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Expand Up @@ -77,12 +77,16 @@ $ ./test.sh --release

## Usage

`$cg_gccjit_dir` is the directory you cloned this repo into in the following instructions.
`$CG_GCCJIT_DIR` is the directory you cloned this repo into in the following instructions:

```bash
export CG_GCCJIT_DIR=[the full path to rustc_codegen_gcc]
```

### Cargo

```bash
$ CHANNEL="release" $cg_gccjit_dir/cargo.sh run
$ CHANNEL="release" $CG_GCCJIT_DIR/cargo.sh run
```

If you compiled cg_gccjit in debug mode (aka you didn't pass `--release` to `./test.sh`) you should use `CHANNEL="debug"` instead or omit `CHANNEL="release"` completely.
Expand All @@ -92,7 +96,7 @@ If you compiled cg_gccjit in debug mode (aka you didn't pass `--release` to `./t
> You should prefer using the Cargo method.

```bash
$ rustc +$(cat $cg_gccjit_dir/rust-toolchain) -Cpanic=abort -Zcodegen-backend=$cg_gccjit_dir/target/release/librustc_codegen_gcc.so --sysroot $cg_gccjit_dir/build_sysroot/sysroot my_crate.rs
$ LIBRARY_PATH=$(cat gcc_path) LD_LIBRARY_PATH=$(cat gcc_path) rustc +$(cat $CG_GCCJIT_DIR/rust-toolchain | grep 'channel' | cut -d '=' -f 2 | sed 's/"//g' | sed 's/ //g') -Cpanic=abort -Zcodegen-backend=$CG_GCCJIT_DIR/target/release/librustc_codegen_gcc.so --sysroot $CG_GCCJIT_DIR/build_sysroot/sysroot my_crate.rs
```

## Env vars
Expand Down