Adjust link_order_callback API

configure.py

@@ -15,9 +15,10 @@
 import argparse
 import sys
 from pathlib import Path
-from typing import List
+from typing import List, Sequence, Union
 
 from tools.project import (
+    BuildConfigUnit,
     Object,
     ProgressCategory,
     ProjectConfig,
@@ -1409,9 +1410,13 @@ for lib in config.libs:
             obj.options["extra_clang_flags"].append("-Wno-return-type")
 
 
-def link_order_callback(module_id: int, units: List[str]) -> List[str]:
+def link_order_callback(
+    module_id: int, units: List[str]
+) -> Sequence[Union[str, BuildConfigUnit]]:
     if module_id == 0:  # DOL
-        return units + ["dummy.c"]
+        return units + [
+            {"object": "dummy.o", "name": "dummy.c", "autogenerated": False}
+        ]
     return units
 
 

tools/project.py

@@ -20,6 +20,7 @@ from pathlib import Path
 from typing import (
     Any,
     Callable,
+    Sequence,
     cast,
     Dict,
     IO,
@@ -192,9 +193,9 @@ class ProjectConfig:
         self.scratch_preset_id: Optional[int] = (
             None  # Default decomp.me preset ID for scratches
         )
-        self.link_order_callback: Optional[Callable[[int, List[str]], List[str]]] = (
-            None  # Callback to add/remove/reorder units within a module
-        )
+        self.link_order_callback: Optional[
+            Callable[[int, List[str]], Sequence[Union[str, BuildConfigUnit]]]
+        ] = None  # Callback to add/remove/reorder units within a module
 
         # Progress output, progress.json and report.json config
         self.progress = True  # Enable report.json generation and CLI progress output
@@ -371,16 +372,19 @@ def load_build_config(
         modules: List[BuildConfigModule] = [build_config, *build_config["modules"]]
         for module in modules:
             unit_names = list(map(lambda u: u["name"], module["units"]))
-            unit_names = config.link_order_callback(module["module_id"], unit_names)
+            new_units = config.link_order_callback(module["module_id"], unit_names)
             units: List[BuildConfigUnit] = []
-            for unit_name in unit_names:
-                # Find existing unit or create a new one
-                unit = next(
-                    (u for u in module["units"] if u["name"] == unit_name), None
-                )
-                if not unit:
-                    unit = {"object": None, "name": unit_name, "autogenerated": False}
-                units.append(unit)
+            for new_unit in new_units:
+                if isinstance(new_unit, str):
+                    units.append(
+                        # Find existing unit or create a new one
+                        next(
+                            (u for u in module["units"] if u["name"] == new_unit),
+                            {"object": None, "name": new_unit, "autogenerated": False},
+                        )
+                    )
+                else:
+                    units.append(new_unit)
             module["units"] = units
 
     return build_config