[CI] build precompiles (#165)

Add a CI job to check that precompiles compile.

.github/workflows/ci.yaml

@@ -45,3 +45,19 @@ jobs:
 
       - name: Run clippy
         run: cd tests && cargo clippy --all-targets --all-features -- -D warnings
+
+  build-precompiles:
+    name: "Build precompiles"
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Build precompiles"
+        uses: actions/checkout@v3
+
+      - name: "Setup requirements"
+        run: make setup
+
+      - name: copy-precompiles
+        run: make copy-precompiles
+
+      - name: "Build precompiles"
+        run: make build-precompiles

Makefile

@@ -9,11 +9,16 @@ setup:
 update:
 	git submodule update
 
-run:
-	cp -r precompiles/ submodules/era-test-node/etc/system-contracts/contracts/precompiles && \
-	cd submodules/era-test-node && \
-	make build-precompiles && \
-	cargo run -- --show-calls=all --resolve-hashes run
+.PHONY: copy-precompiles
+copy-precompiles:
+	cp precompiles/*.yul submodules/era-test-node/etc/system-contracts/contracts/precompiles/
+
+.PHONY: build-precompiles
+build-precompiles: copy-precompiles
+	cd submodules/era-test-node && make build-precompiles
+
+run: build-precompiles
+	cd submodules/era-test-node && cargo run -- --show-calls=all --resolve-hashes run
 
 test:
 	cd tests && \