From b05c32675b662aeb7a8d471c828f2ce9a4a88a8b Mon Sep 17 00:00:00 2001
From: Christopher Lackner <clackner@cerbsim.com>
Date: Mon, 14 Apr 2025 08:34:59 +0200
Subject: [PATCH] check for binary output for older occ versions

---
 libsrc/occ/python_occ_shapes.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libsrc/occ/python_occ_shapes.cpp b/libsrc/occ/python_occ_shapes.cpp
index ea6a8f0f..00bd925c 100644
--- a/libsrc/occ/python_occ_shapes.cpp
+++ b/libsrc/occ/python_occ_shapes.cpp
@@ -14,7 +14,9 @@
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
 
+#if OCC_VERSION_MAJOR>=7 && OCC_VERSION_MINOR>=6
 #include <BinTools_ShapeWriter.hxx>
+#endif // OCC_VERSION_MAJOR>=7 && OCC_VERSION_MINOR>=4
 #include <BOPAlgo_Builder.hxx>
 #include <BOPTools_AlgoTools.hxx>
 #include <BRepAlgoAPI_Common.hxx>
@@ -840,8 +842,12 @@ DLL_HEADER void ExportNgOCCShapes(py::module &m)
     {
       if(binary)
         {
+#if OCC_VERSION_MAJOR>=7 && OCC_VERSION_MINOR>=6
           BinTools_FormatVersion v = version ? BinTools_FormatVersion(*version) : BinTools_FormatVersion_CURRENT;
           BinTools::Write(shape, filename.c_str(), withTriangles, withNormals, v);
+# else // OCC_VERSION_MAJOR>=7 && OCC_VERSION_MINOR>=6
+          throw Exception("Binary BREP export not supported in this version of OpenCascade");
+#endif // OCC_VERSION_MAJOR>=7 && OCC_VERSION_MINOR>=6
         }
       else
         {