ci: test aya-bpf-macros on nightly

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>

.github/workflows/build-aya-bpf.yml

@@ -35,6 +35,9 @@ jobs:
 
       - uses: Swatinem/rust-cache@v1
 
+      - name: Prereqs
+        run: cargo install cross --git https://github.com/cross-rs/cross
+
       - name: Build
         env:
           CARGO_CFG_BPF_TARGET_ARCH: ${{ matrix.arch }}
@@ -50,3 +53,37 @@ jobs:
           pushd bpf
           cargo test --workspace --exclude aya-bpf-macros --verbose
           popd
+
+  build-macros:
+    strategy:
+      matrix:
+        arch:
+          - x86_64-unknown-linux-gnu
+          - aarch64-unknown-linux-gnu
+          - armv7-unknown-linux-gnueabi
+          - riscv64gc-unknown-none-elf
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          override: true
+
+      - uses: Swatinem/rust-cache@v1
+
+      - name: Prereqs
+        run: cargo install cross --git https://github.com/cross-rs/cross
+
+      - name: Build bpf macros
+        run: |
+          pushd bpf
+          cross build -p aya-bpf-macros --verbose
+          popd
+
+      - name: Test bpf macros
+        run: |
+          pushd bpf
+          RUST_BACKTRACE=full cross test -p aya-bpf-macros --verbose
+          popd

.github/workflows/build-aya.yml

@@ -35,12 +35,6 @@ jobs:
       - name: Run test
         run: RUST_BACKTRACE=full cross test --verbose
 
-      - name: Build bpf macros
-        run: cross build --manifest-path ./bpf/Cargo.toml -p aya-bpf-macros --verbose
-
-      - name: Test bpf macros
-        run: RUST_BACKTRACE=full cross test --manifest-path ./bpf/Cargo.toml -p aya-bpf-macros --verbose
-
   test:
     runs-on: ubuntu-20.04
     needs: build