https://bugs.gentoo.org/851189
From https://github.com/openscad/openscad/commit/9aa0d7e9f2914fe5f547bdde69202161d1c6064d Mon Sep 17 00:00:00 2001
From: Jordan Brown <github@jordan.maileater.net>
Date: Sun, 18 Jul 2021 21:01:46 -0700
Subject: [PATCH 05/11] Fix build failure with "generic_print_polyhedron" on
 CGAL-5.3.

--- a/src/cgalutils-polyhedron.cc
+++ b/src/cgalutils-polyhedron.cc
@@ -337,19 +337,6 @@ namespace CGALUtils {
     }
 	};
 
-	template <typename Polyhedron>
-	std::string printPolyhedron(const Polyhedron &p) {
-		std::ostringstream sstream;
-		sstream.precision(20);
-
-    Polyhedron_writer writer;
-    generic_print_polyhedron(sstream, p, writer);
-		
-		return sstream.str();
-	}
-
-	template std::string printPolyhedron(const CGAL_Polyhedron &p);
-
 }; // namespace CGALUtils
 
 #endif /* ENABLE_CGAL */
--- a/src/cgalutils.h
+++ b/src/cgalutils.h
@@ -45,7 +45,6 @@ namespace CGALUtils {
 	bool is_approximately_convex(const PolySet &ps);
 	Geometry const* applyMinkowski(const Geometry::Geometries &children);
 
-	template <typename Polyhedron> std::string printPolyhedron(const Polyhedron &p);
 	template <typename Polyhedron> bool createPolySetFromPolyhedron(const Polyhedron &p, PolySet &ps);
 	template <typename Polyhedron> bool createPolyhedronFromPolySet(const PolySet &ps, Polyhedron &p);
 	template <class Polyhedron_A, class Polyhedron_B> 
-- 
2.35.1