Can't build crash-context on arm-unknown-linux-gnueabihf

[msirringhaus]

I'm unable to build crash-context on arm-unknown-linux-gnueabihf, either locally (using a raspberry pi) or using github actions: https://github.com/msirringhaus/minidump_writer_linux/actions/runs/1992494641

Unfortunately, the error is only

error: could not compile crash-context

even when running --verbose.
Is this supposed to work?

[msirringhaus]

These are working fine:
- x86_64-unknown-linux-gnu
- x86_64-unknown-linux-musl
- i686-unknown-linux-gnu
- aarch64-unknown-linux-gnu

https://github.com/msirringhaus/minidump_writer_linux/actions/runs/1992598643

[Jake-Shadle]

Hmm, I will install cross locally and try and figure out what the actual error is, as you say the error output from GHA is useless.

[msirringhaus]

I get the same unhelpful error message locally, too.

[Jake-Shadle]

I can't even get cross working locally at all because I use podman and using main switched to GHCR which doesn't have proper image tags. 😛

[Jake-Shadle]

Ahh nvm

[target.arm-unknown-linux-gnueabihf]
image = "ghcr.io/cross-rs/arm-unknown-linux-gnueabihf@sha256:2c7f685d79baa15a6437c9ccb76381ad2f597eec62e1a27f9c11fea5ce2adbf6"

[Jake-Shadle]

I suspected it was the global_asm! and sure enough I had missed replacing a preprocessor define with its constant during the port. It gives a not great error when building the package directly, but at least show the line that was problematic, but appears to just entirely give up when being compiled as a dependency, even for crates in the same workspace.

[Jake-Shadle]

I've bumped and published crash-context to 0.0.2.

[msirringhaus]

Just to confirm: This seems to indeed fix it: https://github.com/msirringhaus/minidump_writer_linux/actions/runs/1993088807
Building locally works now, too.

[dkc6gh]

@Jake-Shadle @msirringhaus
I am still having the same issue for ARM v7 cross compilatoin. Somehow inserting "nop" into arm.rs source seems to fix the problem for me. Could someone look into this again?

// Return 0
"mov   r0, #0",
"nop",
"bx    lr",

[Jake-Shadle]

Can you please add what target triple doesn't compile and what the compile error actually is? armv7-unknown-linux-gnueabihf compiles just fine.

[dkc6gh]

Can you please add what target triple doesn't compile and what the compile error actually is? armv7-unknown-linux-gnueabihf compiles just fine.

Here is the mysterious error message:

error: :23:1: invalid instruction, any one of the following would fix this:
bx lr
^

error: could not compile crash-context (lib)

[Jake-Shadle]

Ok well I'm not seeing that, either you are using a different target triple or you're on an older version of rustc?

[dkc6gh]

Ok well I'm not seeing that, either you are using a different target triple or you're on an older version of rustc?

The error only occurs when using the 'release' flag. Building without the flag is successful.

[Jake-Shadle]

#89