no gen_version if debug

libs/hbb_common/src/lib.rs

@@ -180,6 +180,10 @@ pub fn get_version_from_url(url: &str) -> String {
 }
 
 pub fn gen_version() {
+    if Ok("release".to_owned()) != std::env::var("PROFILE") {
+        return;
+    }
+    println!("cargo:rerun-if-changed=Cargo.toml");
     use std::io::prelude::*;
     let mut file = File::create("./src/version.rs").unwrap();
     for line in read_lines("Cargo.toml").unwrap().flatten() {