From 087c442567fc9aa44794c251f89333fe8ddf95a0 Mon Sep 17 00:00:00 2001
From: Campbell Barton <campbell@blender.org>
Date: Tue, 19 Aug 2025 12:31:17 +1000
Subject: [PATCH] Build: unbreak lite builds (WITH_TBB=OFF)

---
 source/blender/blenkernel/intern/mesh_normals.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/blender/blenkernel/intern/mesh_normals.cc b/source/blender/blenkernel/intern/mesh_normals.cc
index 1207c465135..7c365e4b68f 100644
--- a/source/blender/blenkernel/intern/mesh_normals.cc
+++ b/source/blender/blenkernel/intern/mesh_normals.cc
@@ -1337,7 +1337,8 @@ void normals_calc_corners(const Span<float3> vert_positions,
 
   Vector<int> space_groups_count;
   Vector<Vector<CornerSpaceGroup, 0>> all_space_groups;
-  for (auto &groups : space_groups) {
+  /* WARNING: can't use `auto` here, causes build failure on GCC 15.2, WITH_TBB=OFF. */
+  for (Vector<CornerSpaceGroup, 0> &groups : space_groups) {
     space_groups_count.append(groups.size());
     all_space_groups.append(std::move(groups));
   }