Clean build cache for non-vendored builds

bpf/build_ebpf.go

@@ -19,7 +19,7 @@ import (
 	"unicode"
 )
 
-const DEBUG = false
+const DEBUG = true
 const OCI_BIN = "docker"
 const GEN_IMG = "ghcr.io/grafana/beyla-ebpf-generator:main"
 
@@ -400,6 +400,20 @@ func ensureDirsWritable(files []string) error {
 	return nil
 }
 
+func isModuleVendored(wd string) bool {
+	return strings.Contains(wd, "/vendor/")
+}
+
+func cleanBuildCache() error {
+	cmd := exec.Command("go", "clean", "-cache")
+
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("failed to clean build cache: %w", err)
+	}
+
+	return nil
+}
+
 func bail(err error) {
 	fmt.Fprintln(os.Stderr, err)
 	os.Exit(1)
@@ -485,4 +499,10 @@ func main() {
 	if err := cmd.Wait(); err != nil {
 		bail(fmt.Errorf("error waiting for child process: %w", err))
 	}
+
+	if !isModuleVendored(wd) {
+		if err := cleanBuildCache(); err != nil {
+			bail(err)
+		}
+	}
 }