could not compile `cardwire-ebpf` on aerynOS 2026.08 (08/18/2026)

[hphilm]

Describe the bug
compiling cardwire on aerynOS 2026.08 fails with error: could not compile cardwire-ebpf (bin "cardwire-ebpf") due to 1 previous error.

To Reproduce

• setup a chroot build environment via https://github.com/aerynOS/os-tools#-onboarding
• get the package recipes from: https://github.com/aerynOS/recipes
• compile cardwire
• try again by checking out commit 496dd67e2383e71cb6f32f94f6bea9b703018681
• it will fail to compile: cardwire-0.12.1-aerynos-2026.08.build.log
• older version compiles fine: cardwire-0.11.1-aerynos-2026.08.build.log

Expected behavior
Compile newer versions than v0.11.1 on aerynOS

Environment details

rustc 1.97.1 (8bab26f4f 2026-07-14) (AerynOS)
binary: rustc
commit-hash: 8bab26f4f68e0e26f0bb7960be334d5b520ea452
commit-date: 2026-07-14
host: x86_64-unknown-linux-gnu
release: 1.97.1
LLVM version: 22.1.8
lib___.rlib
lib___.so
lib___.so
lib___.a
lib___.so
/usr
off
packed
unpacked
___
emscripten_wasm_eh
fmt_debug="full"
panic="unwind"
proc_macro
relocation_model="pic"
target_abi=""
target_arch="x86_64"
target_endian="little"
target_env="gnu"
target_family="unix"
target_feature="cmpxchg16b"
target_feature="fxsr"
target_feature="lahfsahf"
target_feature="popcnt"
target_feature="sse"
target_feature="sse2"
target_feature="sse3"
target_feature="sse4.1"
target_feature="sse4.2"
target_feature="ssse3"
target_feature="x87"
target_has_atomic
target_has_atomic="16"
target_has_atomic="32"
target_has_atomic="64"
target_has_atomic="8"
target_has_atomic="ptr"
target_has_atomic_load_store
target_has_atomic_load_store="16"
target_has_atomic_load_store="32"
target_has_atomic_load_store="64"
target_has_atomic_load_store="8"
target_has_atomic_load_store="ptr"
target_has_atomic_primitive_alignment="16"
target_has_atomic_primitive_alignment="32"
target_has_atomic_primitive_alignment="64"
target_has_atomic_primitive_alignment="8"
target_has_atomic_primitive_alignment="ptr"
target_has_reliable_f128
target_has_reliable_f16
target_has_reliable_f16_math
target_object_format="elf"
target_os="linux"
target_pointer_width="64"
target_thread_local
target_vendor="unknown"
unix
lib___.rlib
lib___.so
lib___.so
lib___.a
lib___.so
/usr
off
packed
unpacked
___
debug_assertions
emscripten_wasm_eh
fmt_debug="full"
overflow_checks
panic="unwind"
proc_macro
relocation_model="pic"
target_abi=""
target_arch="x86_64"
target_endian="little"
target_env="gnu"
target_family="unix"
target_feature="fxsr"
target_feature="sse"
target_feature="sse2"
target_feature="x87"
target_has_atomic
target_has_atomic="16"
target_has_atomic="32"
target_has_atomic="64"
target_has_atomic="8"
target_has_atomic="ptr"
target_has_atomic_load_store
target_has_atomic_load_store="16"
target_has_atomic_load_store="32"
target_has_atomic_load_store="64"
target_has_atomic_load_store="8"
target_has_atomic_load_store="ptr"
target_has_atomic_primitive_alignment="16"
target_has_atomic_primitive_alignment="32"
target_has_atomic_primitive_alignment="64"
target_has_atomic_primitive_alignment="8"
target_has_atomic_primitive_alignment="ptr"
target_has_reliable_f128
target_has_reliable_f16
target_has_reliable_f16_math
target_object_format="elf"
target_os="linux"
target_pointer_width="64"
target_thread_local
target_vendor="unknown"
ub_checks
unix

Additional context
Let me know what might be the problem within aerynOS during packaging cardwire ...

[hphilm]

Commit of initial failed recipe for cardwire: aerynOS/recipes@496dd67

[xantrk]

Same here:

error: failed to run custom build command for `cardwire-ebpf-userspace v0.12.1 (/home/furkan/.cache/paru/clone/cardwire/src/cardwire-0.12.1/crates/cardwire-ebpf-userspace)`

Caused by:
  process didn't exit successfully: `/home/furkan/.cache/paru/clone/cardwire/src/cardwire-0.12.1/target/release/build/cardwire-ebpf-userspace-00524ef7237d38f4/build-script-build` (exit status: 1)
  --- stdout
  cargo:rerun-if-env-changed=AYA_BUILD_SKIP
  cargo:rerun-if-changed=/home/furkan/.cache/paru/clone/cardwire/src/cardwire-0.12.1/crates/cardwire-ebpf
  cargo:warning=error: "/home/furkan/.rustup/toolchains/nightly-2026-08-12-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/Cargo.lock" does not exist, unable to build with the standard library, try:
  cargo:warning=        rustup component add rust-src --toolchain nightly-2026-08-12-x86_64-unknown-linux-gnu

  --- stderr
  Error: env -u RUSTC -u RUSTC_WORKSPACE_WRAPPER CARGO_ENCODED_RUSTFLAGS="--cfg=bpf_target_arch=\"x86_64\"\u{1f}-Cdebuginfo=2\u{1f}-Clink-arg=--btf" "/usr/bin/rustup" "run" "nightly-2026-08-12" "cargo" "build" "--package" "cardwire-ebpf" "--bins" "--message-format=json" "--release" "--target" "bpfel-unknown-none" "-Z" "build-std=core" "--features" "" "--target-dir" "/home/furkan/.cache/paru/clone/cardwire/src/cardwire-0.12.1/target/release/build/cardwire-ebpf-userspace-84bdad20228f2e56/out/aya-build/target/cardwire-ebpf" failed: ExitStatus(unix_wait_status(25856))

[hphilm]

@xantrk I think your issue is slightly different and you might missed to call:

rustup toolchain install nightly-2026-08-12 --component rust-src
cargo +nightly-2026-08-12 install --locked bpf-linker@0.10.4
cargo fetch --locked

[hphilm]

most likely related to aya-rs/aya#1329

[hphilm]

Still doesn't compile: cardwire-0.12.1-aerynos-2026.08.bpf-build.log

[hphilm]

Seems there is an issue with bpf-linker v0.11.0. Downgrading to v0.10.4 makes it work ... aerynOS/recipes@50ebbb2

[hphilm]

So I managed to make it compile on aerynOS now. I had to modify rustc to have the bpf targets via aerynOS/recipes@4ed6aa4 and update the recipe like this: aerynOS/recipes@9e62954

[christopherdolan]

I've been having the same issue with the AUR package for Arch. I'm not so intimately familiar with this project's build process, so please let me know if there's anything I can share that would be helpful in diagnosis.

[hphilm]

@christopherdolan please use these instead https://github.com/OpenGamingCollective/cardwire/tree/main/packages/arch-linux

[luytan]

From my findings, this is caused by llvm <=22.
When building cardwire-ebpf on a machine where either bpf-linker uses the dynamically linked llvm 22 or was statically linked to llvm 22, i get a memset error.
On a machine with bpf-linker installed with their official installation method (cargo binstall), which downloads a bpf-linker bin statically linked to llvm23, i can compile the crate with no issue.

LLVM 23 commit that fixed the issue: llvm/llvm-project@8446b9f