From 239f2a8ef38d30282592d61b5fb947d99d18a4dc Mon Sep 17 00:00:00 2001
From: Micha Reiser <micha@reiser.io>
Date: Sat, 15 Aug 2026 12:59:55 +0200
Subject: [PATCH] Fix s390x stacker assembly in release builds (#27776)

## Summary

Pass the s390x architecture flag to release builds so that stacker
builds successfully

## Test Plan

Testing: Focused repository hooks passed.
---
 .github/workflows/build-binaries.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/build-binaries.yml b/.github/workflows/build-binaries.yml
index e25be8d8e6..7caae1789b 100644
--- a/.github/workflows/build-binaries.yml
+++ b/.github/workflows/build-binaries.yml
@@ -411,6 +411,7 @@ jobs:
           - target: s390x-unknown-linux-gnu
             arch: s390x
             manylinux: 2_17
+            maturin_docker_options: -e CFLAGS_s390x_unknown_linux_gnu=-march=z10
           - target: powerpc64le-unknown-linux-gnu
             arch: ppc64le
             manylinux: 2_17