Comments (4)
rockboynton
commented on July 23, 2024
2
Adding quotes around the value seemed to fix the issue
[env]
AVR_CPU_FREQUENCY_HZ = "16000000"from blink.
chinoto
commented on July 23, 2024
1
Same problem, same version. If I comment it out, I get an error compiling.
❯ cargo build
Compiling core v0.0.0 (/home/damian/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core)
warning: target json file contains unused fields: no-compiler-rt
Compiling rustc-std-workspace-core v1.99.0 (/home/damian/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/rustc-std-workspace-core)
error: ran out of registers during register allocation
Compiling compiler_builtins v0.1.73
warning: `rustc-std-workspace-core` (lib) generated 1 warning (1 duplicate)
warning: `core` (lib) generated 1 warning
error: could not compile `core` due to previous error; 1 warning emitted
warning: build failed, waiting for other jobs to finish...
warning: `compiler_builtins` (lib) generated 1 warning (1 duplicate)
core compiles if I use release mode (maybe that has always been required?), but then avr_delay complains that llvm_asm macro and feature doesn't exist, which sort of makes sense since there has been talk of deprecating it, though shouldn't it still exist for quite awhile?
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stappersg
commented on July 23, 2024
According https://doc.rust-lang.org/nightly/cargo/reference/config.html#env should it work.
Does it work for you? (So that I know it is just me)
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stappersg
commented on July 23, 2024
Thank you @chinoto, there are now these commits
Compiling with and without ``--release` makes indeed a difference:
stappers@myhost:~/src/rust/RustAVR/blink
$ cargo build
Compiling proc-macro2 v1.0.24
Compiling unicode-xid v0.2.1
Compiling compiler_builtins v0.1.73
Compiling syn v1.0.60
Compiling core v0.0.0 (/home/stappers/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core)
Compiling json v0.12.4
Compiling xml-rs v0.8.3
Compiling lazy_static v1.4.0
Compiling target-cpu-fetch v0.1.3
Compiling xmltree v0.10.2
Compiling target-cpu-macro v0.1.3
Compiling avr-mcu v0.3.5
Compiling quote v1.0.8
Compiling ruduino v0.3.2
Compiling const_env_impl--value v0.1.2
Compiling const_env--value v0.1.2
Compiling rustc-std-workspace-core v1.99.0 (/home/stappers/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/rustc-std-workspace-core)
error: ran out of registers during register allocation
error: could not compile `core` due to previous error
warning: build failed, waiting for other jobs to finish...
stappers@myhost:~/src/rust/RustAVR/blink
$ cargo build --release
Compiling proc-macro2 v1.0.24
Compiling unicode-xid v0.2.1
Compiling compiler_builtins v0.1.73
Compiling syn v1.0.60
Compiling core v0.0.0 (/home/stappers/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core)
Compiling json v0.12.4
Compiling xml-rs v0.8.3
Compiling lazy_static v1.4.0
Compiling target-cpu-fetch v0.1.3
Compiling xmltree v0.10.2
Compiling target-cpu-macro v0.1.3
Compiling avr-mcu v0.3.5
Compiling quote v1.0.8
Compiling ruduino v0.3.2
Compiling const_env_impl--value v0.1.2
Compiling const_env--value v0.1.2
Compiling rustc-std-workspace-core v1.99.0 (/home/stappers/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/rustc-std-workspace-core)
Compiling avr-config v1.0.0
Compiling avr-std-stub v1.0.2
Compiling avr-config v2.0.1
Compiling avr_delay v0.3.1
error: cannot find macro `llvm_asm` in this scope
--> /home/stappers/.cargo/registry/src/github.com-1ecc6299db9ec823/avr_delay-0.3.1/src/lib.rs:34:17
|
34 | unsafe {llvm_asm!("1: sbiw $0,1
| ^^^^^^^^
error: cannot find macro `llvm_asm` in this scope
--> /home/stappers/.cargo/registry/src/github.com-1ecc6299db9ec823/avr_delay-0.3.1/src/lib.rs:41:13
|
41 | unsafe {llvm_asm!("1: sbiw $0,1
| ^^^^^^^^
error[E0635]: unknown feature `llvm_asm`
--> /home/stappers/.cargo/registry/src/github.com-1ecc6299db9ec823/avr_delay-0.3.1/src/lib.rs:1:12
|
1 | #![feature(llvm_asm)]
| ^^^^^^^^
For more information about this error, try `rustc --explain E0635`.
error: could not compile `avr_delay` due to 3 previous errors
warning: build failed, waiting for other jobs to finish...
stappers@myhost:~/src/rust/RustAVR/blink
$
This issue is now left open as reminder to revert commit 6276e6a.
Work can continue when avr-rust/delay#21 and avr-rust/delay#19 have been solved. (yes, help is appricated)
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