add autogeneration header to output artifacts

libs/bio-lib/src/c/clang2rustasm.py

@@ -22,7 +22,7 @@ import argparse
 import re
 import sys
 import os
-
+from datetime import datetime
 
 # ============================================================================
 # Register translation: x16-x31 ABI names -> raw xN form
@@ -1301,6 +1301,7 @@ def format_output(fn_name, start_label, end_label, converted_lines, data_objects
     # C-routines that are `static`-free could use `bio_code` and save the alignment
     # overhead, but the cost of confusing new programmers is not worth the savings
     # of a few kiB of code space.
+    parts.append(f"// AUTOGENERATED CODE on {datetime.now().isoformat()} - do not edit directly!\n")
     parts.append("use bao1x_api::bio_code_aligned;\n")
     parts.append("#[rustfmt::skip]")
     parts.append(f"bio_code_aligned!({fn_name}, {start_label}, {end_label},")