ci: add actions

.github/dependabot.yml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+  - package-ecosystem: gomod
+    directory: /
+    open-pull-requests-limit: 10
+    schedule:
+      interval: monthly

.github/workflows/test.yml

@@ -0,0 +1,34 @@
+name: Test
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ "master", "dev" ]
+  pull_request:
+    branches: [ "master", "dev" ]
+
+permissions:
+  contents: read
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.21'
+
+    - name: Set up deps
+      run: |
+        sudo apt-get install -y gcc flex bison make
+
+    - name: Build
+      run: make build
+
+    - name: Test
+      run: go test -v ./...
+

Makefile

@@ -27,7 +27,7 @@ $(LIBPCAP_OBJ): $(LIBPCAP_SRC) $(wildcard $(LIBPCAP_SRC)/*.[ch]) | $(LIBPCAP_DIS
 	  $(MAKE) install prefix=$(LIBPCAP_DIST_DIR)
 
 $(LIBPCAP_SRC):
-ifeq ($(wildcard $@), )
+ifeq ($(wildcard $@/configure), )
 	echo "INFO: updating submodule 'libpcap'"
 	$(GIT) submodule update --init --recursive
 endif