From 0de5f61bafabcc89eb12c56a90b3aadbfc5435ac Mon Sep 17 00:00:00 2001
From: Giles Bathgate <giles.bathgate@gmail.com>
Date: Wed, 18 Jan 2023 21:37:59 +0000
Subject: [PATCH] Include required header in External_structure_builder.h

---
 .../CGAL/Convex_decomposition_3/External_structure_builder.h     | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Convex_decomposition_3/include/CGAL/Convex_decomposition_3/External_structure_builder.h b/Convex_decomposition_3/include/CGAL/Convex_decomposition_3/External_structure_builder.h
index 823a9b7c4ce..8c4c546590d 100644
--- a/Convex_decomposition_3/include/CGAL/Convex_decomposition_3/External_structure_builder.h
+++ b/Convex_decomposition_3/include/CGAL/Convex_decomposition_3/External_structure_builder.h
@@ -17,6 +17,7 @@
 
 
 #include <CGAL/Nef_3/SNC_decorator.h>
+#include <CGAL/Nef_3/SNC_external_structure.h>
 #include <CGAL/Nef_3/SNC_intersection.h>
 
 #undef CGAL_NEF_DEBUG