Compile Error

[Behkar]

warning: 1 warning emitted

Finished dev [unoptimized + debuginfo] target(s) in 0.01s

cd kernel && cargo xbuild --target=riscv64gc-unknown-none-elf
WARNING: There is no root package to read the cargo-xbuild config from.
Compiling riscv v0.5.6
Compiling bare-metal v0.2.4
Compiling core-os-riscv v0.1.0 (/home/mahdi/xv6_riscv_rust/core-os-riscv/kernel)
error[E0557]: feature has been removed
--> kernel/src/lib.rs:13:12
|
13 | #![feature(const_in_array_repeat_expressions)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
|
= note: removed due to causing promotable bugs

warning: the feature const_generics is incomplete and may not be safe to use and/or cause compiler crashes
--> kernel/src/lib.rs:12:12
|
12 | #![feature(const_generics)]
| ^^^^^^^^^^^^^^
|
= note: #[warn(incomplete_features)] on by default
= note: see issue #44580 rust-lang/rust#44580 for more information

error: aborting due to previous error; 1 warning emitted

For more information about this error, try rustc --explain E0557.
error: could not compile core-os-riscv

To learn more, run the command again with --verbose.
make: *** [Makefile:43: target/riscv64gc-unknown-none-elf/debug/libkernel.a] Error 101

[skyzh]

You may need to downgrade rustc. I'll try adapting and testing this on latest rustc.

[skyzh]

I have fixed the compile error of rustc in #12. However, we are still blocked by rust-embedded/riscv#69, where riscv would produce wrong float abi and would cause link error later.

[skyzh]

If you really want to play with core-os-riscv, the best way to do for now is to use a nightly toolchain published in 2020.