[xen master] automation/gitlab: introduce macOS build jobs

[patchbot@xxxxxxx]

commit 278953f6c1551e392585b7f2229aa28086bb1f39
Author:     Roger Pau Monne <roger.pau@xxxxxxxxxx>
AuthorDate: Thu Apr 23 18:19:38 2026 +0200
Commit:     Roger Pau Monne <roger.pau@xxxxxxxxxx>
CommitDate: Tue May 5 20:52:48 2026 +0200

    automation/gitlab: introduce macOS build jobs
    
    With the imminent decommission of CirrusCI we will lose the limited macOS
    build testing done there.  Introduce two Gitlab macOS build jobs that
    reproduce the ones present on CirrusCI.
    
    According to the "Community programs" Gitlab documentation [0] we get
    50,000 compute minutes per month.  The arm64 job takes ~1m 15s, and the
    x86_64 one ~2m.  I think it's likely enough given the amount of minutes we
    have available.  We might need to reconsider if we add more tasks that
    consume compute minutes.
    
    [0] 
https://docs.gitlab.com/subscriptions/community_programs/#gitlab-for-open-source
    
    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 automation/gitlab-ci/build.yaml | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/automation/gitlab-ci/build.yaml b/automation/gitlab-ci/build.yaml
index eff96beaa5..463ed2f96d 100644
--- a/automation/gitlab-ci/build.yaml
+++ b/automation/gitlab-ci/build.yaml
@@ -815,3 +815,33 @@ debian-13-riscv64-gcc-randconfig:
     KBUILD_DEFCONFIG: tiny64_defconfig
     RANDCONFIG: y
     <<: *riscv-fixed-randconfig
+
+# macOS build jobs
+.macos-26:
+  <<: *build
+  tags:
+    - saas-macos-medium-m1
+  image: macos-26-xcode-26
+  variables:
+    HOMEBREW_NO_AUTO_UPDATE: 1
+    HOSTCC: clang
+    HYPERVISOR_ONLY: y
+    <<: *gcc
+  script:
+    - brew install ${CROSS_COMPILE}gcc ${CROSS_COMPILE}binutils
+    - alias nproc="sysctl -n hw.ncpu"
+    - ./automation/scripts/build 2>&1 | tee build.log
+
+macos-26-x86_64:
+  extends:
+    - .macos-26
+  variables:
+    XEN_TARGET_ARCH: x86_64
+    CROSS_COMPILE: x86_64-elf-
+
+macos-26-arm64:
+  extends:
+    - .macos-26
+  variables:
+    XEN_TARGET_ARCH: arm64
+    CROSS_COMPILE: aarch64-elf-
--
generated by git-patchbot for /home/xen/git/xen.git#master