chore(ci): check linked glibc version on zig.

Signed-off-by: Federico Di Pierro <nierro92@gmail.com>

.github/workflows/ci.yml

@@ -76,6 +76,15 @@ jobs:
           KERNELDIR=/lib/modules/$(ls /lib/modules)/build make -j4
           make run-unit-tests
 
+      # On zig, build also sinsp-example and check the glibc linked versions
+      # to make sure we are actually using the correct glibc version.
+      - name: Install zig
+        if: matrix.name == 'zig'
+        run: |
+          cd build
+          linked_glibc=$(objdump -T libsinsp/test/unit-test-libsinsp | grep -Eo 'GLIBC_\S+' | sort -u -t "." -k1,1n -k2,2n -k3,3n | tail -n1 | tr -d ')')
+          [[ "$linked_glibc" != "GLIBC_2.17" ]] && exit 1
+
   build-libs-linux-amd64-static:
     name: build-libs-linux-amd64-static 🎃
     runs-on: ubuntu-latest