rename + safe guard

Author: Jason2866

builder/frameworks/arduino.py

@@ -602,6 +602,8 @@ def has_psram_config():
     new_build_unflags = build_unflags.split()
     env.Replace(BUILD_UNFLAGS=new_build_unflags)
 
+    if not env.get('BUILD_FLAGS'):  # Initialize if not set
+        env['BUILD_FLAGS'] = []
     # Check if BUILD_FLAGS contains -flto=auto
     build_flags = env.get('BUILD_FLAGS', [])
     if isinstance(build_flags, str):
@@ -933,7 +935,7 @@ def get_frameworks_in_current_env():
     # Handle LTO flags if flag_lto is set
     if flag_lto:
         # First remove existing -fno-lto flags, then add LTO flags
-        component_manager.remove_lto_flags()
+        component_manager.remove_no_lto_flags()
         component_manager.add_lto_flags()
 
     silent_action = env.Action(component_manager.restore_pioarduino_build_py)

builder/frameworks/component_manager.py

@@ -1272,7 +1272,7 @@ def print_changes_summary(self) -> None:
         """
         self.logger.print_changes_summary()
 
-    def remove_lto_flags(self) -> bool:
+    def remove_no_lto_flags(self) -> bool:
         """
         Remove all -fno-lto flags from pioarduino-build.py.