ci: add a musl (Alpine) build job

.github/workflows/pr.yml

@@ -71,3 +71,32 @@ jobs:
         with:
           name: no-libsystemd-meson-testlog
           path: build/meson-logs/testlog.txt
+
+  musl:
+    runs-on: ubuntu-latest
+    container: alpine:latest
+    steps:
+      - name: Install system build dependencies
+        run: >
+          apk add --no-cache
+          build-base linux-headers meson ninja git py3-pip
+
+      - uses: actions/checkout@v4
+
+      - name: Install python dependencies for mctp tests
+        run: pip install --break-system-packages -r tests/requirements.txt
+
+      - name: Configure mctp build
+        run: meson setup build
+
+      - name: Build mctp
+        run: meson compile -C build
+
+      - name: Test mctp
+        run: meson test -C build --verbose
+
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: musl-meson-testlog
+          path: build/meson-logs/testlog.txt

CHANGELOG.md

@@ -18,6 +18,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
    To support this, the minimum meson version has been bumped to 0.60,
    previously 0.59.
 
+3. CI now includes a musl (Alpine Linux) build, to catch portability issues
+   before they affect the meta-openembedded bump process.
+
 ### Fixes
 
 1. In v2.6. we lost the peer initial MTU sematics, which gave us a safe minimum