diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e7779ef..e40434f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,10 +8,14 @@ on:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v3
     - name: build disk image
       run: make image.bin
+  llvm:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: LLVM build
+      run: make LLVM=on image.bin