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new 2747cb30ad ci: Print native CPU target features in release test job
(#11212)
2747cb30ad is described below
commit 2747cb30ad2f7e3d9f53d81c8e6dffb6fc586d55
Author: Andrew Lamb <[email protected]>
AuthorDate: Fri Sep 25 09:41:39 2026 -0400
ci: Print native CPU target features in release test job (#11212)
# Which issue does this PR close?
- Follow on to https://github.com/apache/arrow-rs/pull/11192
# Rationale for this change
https://github.com/apache/arrow-rs/pull/11192 added a `Display runner
CPU features` step to the release test job which I hoped would show what
`target_feature`s (e.g. `bmi2`) the tests are compiled with.
However, apparently `rustc --print cfg` does not read the `RUSTFLAGS`
environment variable. Here is [what it shows on
main](https://github.com/apache/arrow-rs/actions/runs/36118737961/job/108018908145):
<img width="796" height="355" alt="Screenshot 2026-09-25 at 6 28 57 AM"
src="https://github.com/user-attachments/assets/62ea8c2e-c865-49be-9d25-543f3de48335";
/>
# What changes are included in this PR?
Pass `-C target-cpu=native` explicitly to `rustc --print cfg`
Now it shows all the actual features. For example:
https://github.com/apache/arrow-rs/actions/runs/36121475027/job/108027743321?pr=11212
<img width="2049" height="918" alt="Screenshot 2026-09-25 at 6 28 00 AM"
src="https://github.com/user-attachments/assets/ed560eb5-7736-4a34-893a-84525a304162";
/>
# Are these changes tested?
By CI.
# Are there any user-facing changes?
No
Co-authored-by: Claude Fable 5.1 <[email protected]>
---
.github/workflows/arrow.yml | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/.github/workflows/arrow.yml b/.github/workflows/arrow.yml
index e5d11488d6..71d4bda10f 100644
--- a/.github/workflows/arrow.yml
+++ b/.github/workflows/arrow.yml
@@ -133,7 +133,10 @@ jobs:
# portable fallback. The portable fallbacks are tested in debug builds
run: echo "RUSTFLAGS=${RUSTFLAGS} -C target-cpu=native" >> $GITHUB_ENV
- name: Display runner CPU features
- run: rustc --print cfg | grep target_feature
+ # `rustc --print cfg` does not read RUSTFLAGS, so pass
+ # `-C target-cpu=native` explicitly to show the features that
+ # the tests below are actually compiled with
+ run: rustc --print cfg -C target-cpu=native | grep target_feature
# Note only run the low level crates in release mode
# which are the most likely to have overflow tests
- name: Test arrow-buffer
