add ci jobs

fix missing clean

rename job name

stash

.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: gomod
+    directory: /
+    open-pull-requests-limit: 10
+    schedule:
+      interval: monthly
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly

.github/workflows/build.yml

@@ -0,0 +1,38 @@
+name: Build programs
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.21'
+
+      - name: Install dependencies
+        run: |
+          set -e
+          sudo apt-get update
+          sudo apt-get install --yes build-essential pkgconf libelf-dev llvm-12 clang-12
+          for tool in "clang" "llc" "llvm-strip"; do
+            path=$(which $tool-12)
+            test $(which $tool) && sudo mv $(which $tool){,.bak}
+            sudo ln -sf $path ${path%-*}
+          done
+
+          git submodule update --init --recursive
+
+      - name: build programs
+        run: |
+          set -e
+          bash ci.sh

chapter13/memfd-create/Makefile

@@ -2,3 +2,6 @@
 
 build:
 	go build
+
+clean:
+	rm -rf ./memfd-create

chapter14/inspect-ebpf-helpers/Makefile

@@ -6,3 +6,6 @@ build:
 
 run:
 	sudo ./inspect-ebpf-helpers
+
+clean:
+	rm -rf ./inspect-ebpf-helpers

ci.sh

@@ -0,0 +1,38 @@
+#!/bin/env bash
+
+set -e
+
+
+function test_dir() {
+    if test -f Makefile; then
+        echo -e "\033[33m=== start build $1  ===\033[0;39m"
+        make clean && make
+        echo -e "\033[32m=== finish build $1 ===\033[0;39m"
+    fi
+}
+
+function test_multiple_dir() {
+    local dir=$1
+
+    for sub in $(ls ./); do
+        local subpath="$dir/$sub"
+        if test -d "$sub"; then
+            ( cd "$sub" && test_multiple_dir "$subpath" )
+        elif test -f $sub; then
+            if [[ "$sub" == *Makefile ]]; then
+                test_dir "$dir"
+            fi
+        fi
+    done
+}
+
+
+function main() {
+    local dir="${1:-chapter*}"
+    echo $dir
+    for i in $(find $dir -maxdepth 0 -type d);  do
+        ( cd $i && test_multiple_dir "$i")
+    done
+}
+
+main "$@"

common.Makefile

@@ -49,8 +49,10 @@ CGO_EXTLDFLAGS_DYN = '-w'
 
 PROGRAM = main
 
-all:
+build:
 	$(MAKE) -C . $(PROGRAM)
+
+run:
 	sudo ./${PROGRAM}
 
 # vmlinux header file