Cannot build the Hermit application

[Ivan-Velickovic]

Hello, I'd like to try out Hermit and thought this might be an appropriate place to start.

I followed the README instructions and downloaded the Rust Standard Library for Hermit for x86_64 and AArch64, I unpacked both of these and ran the respective ./install.sh script. Everything seemed to be fine, no errors reported.

I then ran the README command: cargo build --target x86_64-unknown-hermit but got the following error:

   Compiling hermit v0.7.2
error[E0463]: can't find crate for `std`
  |
  = note: the `x86_64-unknown-hermit` target may not be installed
  = help: consider downloading the target with `rustup target add x86_64-unknown-hermit`

error: cannot find macro `include_str` in this scope
 --> /home/ivanv/.cargo/registry/src/index.crates.io-6f17d22bba15001f/hermit-0.7.2/src/lib.rs:1:10
  |
1 | #![doc = include_str!("../README.md")]
  |          ^^^^^^^^^^^

error: requires `sized` lang_item

For more information about this error, try `rustc --explain E0463`.
The following warnings were emitted during compilation:

warning: $ cd "/tmp/hermit-rs-template/target/x86_64-unknown-hermit/debug/build/hermit-152bff166c6f440c/out/kernel-0.6.6" && env -u CARGO -u CARGO_CFG_PANIC -u CARGO_CFG_TARGET_ARCH -u CARGO_CFG_TARGET_ENDIAN -u CARGO_CFG_TARGET_ENV -u CARGO_CFG_TARGET_FEATURE -u CARGO_CFG_TARGET_HAS_ATOMIC -u CARGO_CFG_TARGET_OS -u CARGO_CFG_TARGET_POINTER_WIDTH -u CARGO_CFG_TARGET_VENDOR -u CARGO_ENCODED_RUSTFLAGS -u CARGO_FEATURE_ACPI -u CARGO_FEATURE_DEFAULT -u CARGO_FEATURE_DHCPV4 -u CARGO_FEATURE_FS -u CARGO_FEATURE_FSGSBASE -u CARGO_FEATURE_PCI -u CARGO_FEATURE_PCI_IDS -u CARGO_FEATURE_SMP -u CARGO_FEATURE_TCP -u CARGO_FEATURE_UDP -u CARGO_HOME -u CARGO_MAKEFLAGS -u CARGO_MANIFEST_DIR -u CARGO_MANIFEST_LINKS -u CARGO_PKG_AUTHORS -u CARGO_PKG_DESCRIPTION -u CARGO_PKG_HOMEPAGE -u CARGO_PKG_LICENSE -u CARGO_PKG_LICENSE_FILE -u CARGO_PKG_NAME -u CARGO_PKG_README -u CARGO_PKG_REPOSITORY -u CARGO_PKG_RUST_VERSION -u CARGO_PKG_VERSION -u CARGO_PKG_VERSION_MAJOR -u CARGO_PKG_VERSION_MINOR -u CARGO_PKG_VERSION_PATCH -u CARGO_PKG_VERSION_PRE -u LD_LIBRARY_PATH -u RUSTC -u RUSTDOC -u RUSTUP_HOME -u RUSTUP_TOOLCHAIN -u RUST_RECURSION_COUNT "/home/ivanv/.cargo/bin/cargo" "run" "--package=xtask" "--target-dir" "/tmp/hermit-rs-template/target/x86_64-unknown-hermit/debug/build/hermit-152bff166c6f440c/out/target" "--" "build" "--arch" "x86_64" "--profile" "dev" "--target-dir" "/tmp/hermit-rs-template/target/x86_64-unknown-hermit/debug/build/hermit-152bff166c6f440c/out/target" "--no-default-features" "--features" "acpi dhcpv4 fsgsbase pci pci-ids smp tcp udp fs"

error: could not compile `hermit` (lib) due to 3 previous errors

Apologies if I'm missing anything simple, I am not super familiar with building Rust projects.

[mkroening]

Thanks for the issue. I forgot to bump the toolchain here after releasing 1.74.1, which you have probably installed. That's why cargo was still looking for the 1.74.0 installation, which it could not find.

I opened #52 to fix this.

Let me know, if there are any problems after that. :)

[Ivan-Velickovic]

Works now, thank you!