Merge pull request #976 from dave-tucker/fix-codegen-2

ci: Fix codegen and prep for s390/ppc64el

.github/workflows/gen.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Install headers
         run: |
           sudo apt -y update
-          sudo apt -y install libc6-dev libc6-dev-{arm64,armel,riscv64}-cross
+          sudo apt -y install libelf-dev libc6-dev libc6-dev-{arm64,armel,riscv64,ppc64el,s390x}-cross
 
       - name: Run codegen
         run: |