extra

Author: mcspr

tools/build.py

@@ -46,7 +46,7 @@ def compile(tmp_dir, sketch, cache, ide_path, f, args):
         ['-libraries', args.library_path],
         ['-hardware', args.hardware_path]]
     for flag, paths in flag_paths:
-        for path in paths:
+        for path in paths or []:
             cmd += [flag, path]
 
     # Debug=Serial,DebugLevel=Core____