Tested on amd64 only.

Index: Makefile
===================================================================
RCS file: /cvs/ports/cad/openscad/Makefile,v
diff -u -p -r1.56 Makefile
--- Makefile	28 Apr 2025 07:19:19 -0000	1.56
+++ Makefile	21 Nov 2025 17:55:36 -0000
@@ -1,10 +1,9 @@
-BROKEN =		update to git snapshot to build with 1.87
 COMMENT =		the programmer's solid 3D CAD modeller
 BROKEN-sparc64=	SIGILL on src/cgalutils.cc with CGAL-4.6.3
 
 V =			2021.01
 DISTNAME =		openscad-${V}
-REVISION =		12
+REVISION =		13
 
 CATEGORIES =		cad
 
Index: patches/patch-src_filemodule_cc
===================================================================
RCS file: patches/patch-src_filemodule_cc
diff -N patches/patch-src_filemodule_cc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ patches/patch-src_filemodule_cc	21 Nov 2025 17:55:36 -0000
@@ -0,0 +1,12 @@
+Index: src/filemodule.cc
+--- src/FileModule.cc.orig	Fri Nov 21 10:07:49 2025
++++ src/FileModule.cc	Fri Nov 21 10:09:46 2025
+@@ -65,7 +65,7 @@
+ 	auto ext = fs::path(path).extension().generic_string();
+ 
+ 	if (boost::iequals(ext, ".otf") || boost::iequals(ext, ".ttf")) {
+-		if (fs::is_regular(path)) {
++		if (fs::is_regular_file(path)) {
+ 			FontCache::instance()->register_font_file(path);
+ 		} else {
+ 			LOG(message_group::Error,Location::NONE,"","Can't read font with path '%1$s'",path);