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| author | bjorn3 <bjorn3@users.noreply.github.com> | 2018-11-17 12:24:35 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-11-17 12:24:35 +0100 |
| commit | e3bbef764c6d2b8655a8d2f8540b5aaffa1924ef (patch) | |
| tree | 0d874b82d9e47c446842c3fe833c234ae53196a0 | |
| parent | b2f7386f7ed34f24f293c201779a89cbc08f8243 (diff) | |
| download | rust-e3bbef764c6d2b8655a8d2f8540b5aaffa1924ef.tar.gz rust-e3bbef764c6d2b8655a8d2f8540b5aaffa1924ef.zip | |
Some changes to Readme.md
`rustup override set nightly` is not needed, because there is a `rust-toolchain` file. cc #165
| -rw-r--r-- | Readme.md | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Readme.md b/Readme.md index f43f909e9c7..85f7bd9a72f 100644 --- a/Readme.md +++ b/Readme.md @@ -22,7 +22,7 @@ $ rustc -Zcodegen-backend=$(pwd)/target/debug/librustc_codegen_cranelift.so my_c ## Build sysroot and test ```bash -$ rustup component add rust-src # Make sure the sysroot source is availablr +$ rustup component add rust-src # Make sure the sysroot source is available $ ./prepare_libcore.sh # Patch the sysroot source for some not yet supported things $ ./build.sh ``` @@ -36,3 +36,13 @@ $ ./build.sh * libstd (needs varargs and some other stuff) ([tracked here](https://github.com/bjorn3/rustc_codegen_cranelift/issues/146)) * u128 and i128 ([no cranelift support](https://github.com/CraneStation/cranelift/issues/354)) * SIMD (huge amount of work to get all intrinsics implemented, so may never be supported) + +## Troubleshooting + +### Can't compile + +Try updating your nightly compiler. You can try to use an nightly a day or two older if updating rustc doesn't fix it. If you still can't compile it, please fill an issue. + +### error[E0463]: can't find crate for `std` while compiling a no_std crate + +If you use `RUSTFLAGS` to pass `-Zcodegen-backend` to rustc, cargo will compile `build-dependencies` with those flags too. Because this project doesn't support libstd yet, that will result in an error. I don't know of any way to fix this. :( |