diff --git a/.github/workflows/revive-llvm-test.yml b/.github/workflows/revive-llvm-test.yml
new file mode 100644
index 0000000..fc3a6fc
--- /dev/null
+++ b/.github/workflows/revive-llvm-test.yml
@@ -0,0 +1,43 @@
+on:
+  pull_request:
+    types: [assigned, opened, synchronize, reopened]
+    paths:
+      - 'LLVM.lock'
+      - 'crates/llvm-builder/**'
+      - '.github/workflows/revive-llvm-test.yml'
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        runner: [parity-large, macos-14, macos-13]
+    runs-on: ${{ matrix.runner }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install apt dependencies
+        if: matrix.runner == 'parity-large'
+        run: |
+          sudo apt update && sudo apt-get install -y cmake ninja-build curl git libssl-dev pkg-config clang lld musl
+
+      - name: Install macos dependencies
+        if: matrix.runner == 'macos-14' || matrix.runner == 'macos-13'
+        run: |
+          brew install ninja
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: stable
+          components: rust-src
+          rustflags: ""
+
+      - run: |
+          rustup show
+          cargo --version
+          cmake --version
+          bash --version
+
+      - name: Test llvm-builder
+        run: make test-llvm-builder
+        env:
+          RUST_LOG: trace
diff --git a/crates/llvm-builder/tests/build.rs b/crates/llvm-builder/tests/build.rs
index 2173555..d68a24f 100644
--- a/crates/llvm-builder/tests/build.rs
+++ b/crates/llvm-builder/tests/build.rs
@@ -53,6 +53,16 @@ fn clone_build_and_clean_musl() -> anyhow::Result<()> {
         .assert()
         .success();
 
+    Command::cargo_bin(common::REVIVE_LLVM)?
+        .current_dir(test_dir.path())
+        .arg("build")
+        .arg("--llvm-projects")
+        .arg("clang")
+        .arg("--llvm-projects")
+        .arg("lld")
+        .assert()
+        .success();
+
     Command::cargo_bin(common::REVIVE_LLVM)?
         .arg("--target-env")
         .arg("musl")
@@ -65,12 +75,6 @@ fn clone_build_and_clean_musl() -> anyhow::Result<()> {
         .assert()
         .success();
 
-    Command::cargo_bin(common::REVIVE_LLVM)?
-        .current_dir(test_dir.path())
-        .arg("builtins")
-        .assert()
-        .success();
-
     Command::cargo_bin(common::REVIVE_LLVM)?
         .current_dir(test_dir.path())
         .arg("clean")
@@ -100,6 +104,10 @@ fn debug_build_with_tests_coverage() -> anyhow::Result<()> {
         .arg("--enable-tests")
         .arg("--build-type")
         .arg("Debug")
+        .arg("--llvm-projects")
+        .arg("clang")
+        .arg("--llvm-projects")
+        .arg("lld")
         .assert()
         .success();
 
@@ -123,6 +131,10 @@ fn build_with_sanitizers() -> anyhow::Result<()> {
         .arg("build")
         .arg("--sanitizer")
         .arg("Address")
+        .arg("--llvm-projects")
+        .arg("lld")
+        .arg("--llvm-projects")
+        .arg("clang")
         .assert()
         .success();
 
@@ -136,10 +148,31 @@ fn clone_build_and_clean_emscripten() -> anyhow::Result<()> {
     let test_dir = common::TestDir::with_lockfile(None)?;
     let command = Command::cargo_bin(common::REVIVE_LLVM)?;
     let program = command.get_program().to_string_lossy();
+
+    Command::cargo_bin(common::REVIVE_LLVM)?
+        .current_dir(test_dir.path())
+        .arg("clone")
+        .assert()
+        .success();
+
+    Command::cargo_bin(common::REVIVE_LLVM)?
+        .current_dir(test_dir.path())
+        .arg("build")
+        .arg("--llvm-projects")
+        .arg("lld")
+        .arg("--llvm-projects")
+        .arg("clang")
+        .assert()
+        .success();
+
+    // Two little shell-dependent things here:
+    // Doing `. ./emsdk_env.sh` instead of `source`, as `source` might be missing in some shells
+    // `cd {} && . ./emsdk_env.sh && cd ..` helps the script to locate `emsdk.py`
+    // @see https://github.com/emscripten-core/emsdk/blob/9dbdc4b3437750b85d16931c7c801bb71a782122/emsdk_env.sh#L61-L69
     let emsdk_wrapped_build_command = format!(
         "{program} --target-env emscripten clone && \
-        source {}emsdk_env.sh && \
-        {program} --target-env emscripten build --llvm-projects clang --llvm-projects lld",
+        cd {} && . ./emsdk_env.sh && cd .. && \
+        {program} --target-env emscripten build --llvm-projects lld",
         revive_llvm_builder::LLVMPath::DIRECTORY_EMSDK_SOURCE,
     );