On Thu Nov 20, 2025 at 1:19 PM CET, Gyorgy Sarvari via lists.openembedded.org
wrote:
> This patch is a workaround for
> https://bugzilla.yoctoproject.org/show_bug.cgi?id=15976
>
> cc-rs crate is used by a number of projects, including rust's bootstrap also
> to invoke the systems c/c++ compiler.
>
> A few updates ago it has changed the way CFLAGS/CXXFLAGS are handled: it now
> merges them with HOST_C*FLAGS and TARGET_C*FLAGS.
>
> This is a problem when a recipe is cross compiled, but it has a build
> dependency
> which uses this crate to be built. In this case the C*FLAGS variable contains
> target flags, while the HOST_C*FLAGS contains host-specific flags, and when
> the
> two are mixed, the output is not what one expects.
>
> This change tries to filter out the incorrect flags:
> - If the wrapper is invoked as a c or c++ compiler wrapper,
> - then determines if it compiles for host or for target
> - Depending on the on above, it considers the TARGET_*FLAGS or HOST*FLAGS
> correct, and the C*FLAGS variable content incorrect.
> - It subtracts the correct set from the incorrect set, and drops the
> remainder from the compiler flags. (Which might be often an empty list, so
> the flags are frequently unchanged)
>
> Signed-off-by: Gyorgy Sarvari <[email protected]>
> ---
Hi Gyorgy,
Thanks for your patch.
I suspect one of the commit of this series is responsible of this rust
test failure:
2025-11-20 21:59:48,098 - oe-selftest - INFO - FAIL:
rust.RustSelfTestSystemEmulated.test_rust (subunit.RemotedTestCase)
...
File
"/srv/pokybuild/yocto-worker/qemux86-64-tc/build/layers/openembedded-core/meta/lib/oeqa/core/decorator/__init__.py",
line 35, in wrapped_f
return func(*args, **kwargs)
File
"/srv/pokybuild/yocto-worker/qemux86-64-tc/build/layers/openembedded-core/meta/lib/oeqa/selftest/cases/rust.py",
line 131, in test_rust
retval = runCmd(cmd)
File
"/srv/pokybuild/yocto-worker/qemux86-64-tc/build/layers/openembedded-core/meta/lib/oeqa/utils/commands.py",
line 214, in runCmd
raise AssertionError("Command '%s' returned non-zero exit status %d:\n%s" %
(command, result.status, exc_output))
AssertionError: Command 'export TARGET_VENDOR="-poky"; export
PATH=/srv/pokybuild/yocto-worker/qemux86-64-tc/build/build-st-1700604/tmp/work/x86-64-v3-poky-linux/rust/1.90.0/recipe-sysroot-native/usr/bin/python3-native:/srv/pokybuild/yocto-worker/qemux86-64-tc/build/build-st-1700604/tmp/work/x86-64-v3-poky-linux/rust/1.90.0/recipe-sysroot-native/usr/bin:/srv/pokybuild/yocto-worker/qemux86-64-tc/build/build-st-1700604/tmp/work/x86-64-v3-poky-linux/rust/1.90.0/recipe-sysroot-native/usr/bin/x86_64-poky-linux:/srv/pokybuild/yocto-worker/qemux86-64-tc/build/build-st-1700604/tmp/hosttools:$PATH;
export
RUST_TARGET_PATH=/srv/pokybuild/yocto-worker/qemux86-64-tc/build/build-st-1700604/tmp/work/x86-64-v3-poky-linux/rust/1.90.0/rust-targets;
export RUSTFLAGS='-C strip=debuginfo'; export
TEST_DEVICE_ADDR="192.168.7.6:12345"; cd
/srv/pokybuild/yocto-worker/qemux86-64-tc/build/build-st-1700604/tmp/work/x86-64-v3-poky-linux/rust/1.90.0/sources/rustc-1.90.0-src;
python3 src/bootstrap/bootstrap.py test --exclude src/bootstrap --exclude
src/doc/rustc --exclude src/doc/rustdoc --exclude src/doc/unstable-book
--exclude src/etc/test-float-parse --exclude src/librustdoc --exclude
src/rustdoc-json-types --exclude src/tools/coverage-dump --exclude
src/tools/jsondoclint --exclude src/tools/lint-docs --exclude
src/tools/replace-version-placeholder --exclude src/tools/rust-analyzer
--exclude src/tools/rustdoc-themes --exclude src/tools/rust-installer
--exclude src/tools/test-float-parse --exclude src/tools/suggest-tests
--exclude src/tools/tidy --exclude
tests/assembly-llvm/asm/aarch64-outline-atomics.rs --exclude
tests/codegen-llvm/issues/issue-122805.rs --exclude
tests/codegen-llvm/thread-local.rs --exclude tests/mir-opt/ --exclude
tests/run-make --exclude tests/run-make-fulldeps --exclude tests/rustdoc
--exclude tests/rustdoc-json --exclude tests/rustdoc-js-std --exclude
tests/ui/abi/stack-probes-lto.rs --exclude tests/ui/abi/stack-probes.rs
--exclude tests/ui/codegen/mismatched-data-layouts.rs --exclude
tests/codegen-llvm/rust-abi-arch-specific-adjustment.rs --exclude
tests/ui/debuginfo/debuginfo-emit-llvm-ir-and-split-debuginfo.rs --exclude
tests/ui/feature-gates/version_check.rs --exclude tests/ui-fulldeps/
--exclude tests/ui/process/nofile-limit.rs --exclude tidyselftest --no-doc
--no-fail-fast --bless --target x86_64-poky-linux-gnu' returned non-zero exit
status 1:
...
https://autobuilder.yoctoproject.org/valkyrie/#/builders/66/builds/2691
Can you have a look at this error?
Thanks,
Mathieu
--
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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