IfcOpenShell · aothms · Dec 2, 2025 · Jan 4, 2026 · Jan 6, 2026 · Jan 6, 2026
diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
@@ -55,14 +55,15 @@ option(MINIMAL_BUILD "The build is to make a minimal version of IFC converter fr
 option(WASM_BUILD "Build a WebAssembly binary." OFF)
 
 option(ENABLE_BUILD_OPTIMIZATIONS "Enable certain compiler and linker optimizations on RelWithDebInfo and Release builds." OFF)
-option(BUILD_SHARED_LIBS "Build IfcParse and IfcGeom as shared libs (SO/DLL)." OFF)
+option(BUILD_SHARED_LIBS "Build IfcParse and IfcGeom as shared libs (SO/DLL)." ON)
 option(MSVC_PARALLEL_BUILD "Multi-threaded compilation in Microsoft Visual Studio (/MP)" OFF)
 option(USE_VLD "Use Visual Leak Detector for debugging memory leaks, MSVC-only." OFF)
 option(USE_MMAP "Adds a command line options to parse IFC files from memory mapped files using Boost.Iostreams" OFF)
 option(NO_WARN "Disable all warnings" OFF)
 
 option(BUILD_IFCGEOM "Build IfcGeom." ON)
 option(BUILD_IFCPYTHON "Build IfcPython." ON)
+option(BUILD_IFCPARSE_EXPERIMENTAL_WRAPPER "Build the experimental Clang-generated ifcparse Python wrapper." OFF)
 option(BUILD_CONVERT "Build IfcConvert executable." ON)
 option(BUILD_DOCUMENTATION "Build IfcOpenShell Documentation." OFF)
 option(BUILD_EXAMPLES "Build example applications." ON)
@@ -73,13 +74,13 @@ option(BUILD_PACKAGE "" OFF)
 
 option(WITH_OPENCASCADE "Enable geometry interpretation using Open CASCADE" ON)
 option(WITH_CGAL "Enable geometry interpretation using CGAL" ON)
+option(WITH_MANIFOLD "Enable geometry interpretation using Manifold" OFF)
 option(COLLADA_SUPPORT "Build IfcConvert with COLLADA support (requires OpenCOLLADA)." ON)
 option(GLTF_SUPPORT "Build IfcConvert with glTF support (requires json.hpp)." OFF)
 option(HDF5_SUPPORT "Enable HDF5 support (requires HDF5, zlib)" ON)
 option(WITH_PROJ "Enable output of Earth-Centered Earth-Fixed glTF output using the PROJ library" OFF)
 option(IFCXML_SUPPORT "Build IfcParse with ifcXML support (requires libxml2)." ON)
 option(USD_SUPPORT "Build IfcConvert with USD support (requires pixar's USD library)." OFF)
-option(WITH_RELATIONSHIP_VALIDATION "Build IfcConvert with option to validate geometrical relationships." OFF)
 option(WITH_ROCKSDB "Support a RocksDB key-value store as a file backend in IfcOpenShell" OFF)
 option(WITH_ZSTD "Use Zstd compression in RocksDB writes" OFF)
 
@@ -119,6 +120,10 @@ if(MINIMAL_BUILD)
     set(USD_SUPPORT OFF)
 endif()
 
+if(NOT BUILD_SHARED_LIBS)
+    message(FATAL_ERROR "IfcOpenShell now requires BUILD_SHARED_LIBS=ON.")
+endif()
+
 if((BUILD_CONVERT OR BUILD_GEOMSERVER OR BUILD_IFCPYTHON) AND(NOT BUILD_IFCGEOM))
     message(STATUS "'IfcGeom' is required with current outputs")
     set(BUILD_IFCGEOM ON)
@@ -168,14 +173,11 @@ if(NOT IS_ABSOLUTE ${INCLUDEDIR})
 endif()
 message(STATUS "INCLUDEDIR: ${INCLUDEDIR}")
 
-if(BUILD_SHARED_LIBS)
-    add_definitions(-DIFC_SHARED_BUILD)
-    if(MSVC)
-        message(WARNING "Building DLLs against the static VC run-time. This is not recommended if the DLLs are to be redistributed.")
-        # C4521: 'identifier' : class 'type' needs to have dll-interface to be used by clients of class 'type2'
-        # There will be couple hundreds of these so suppress them away, https://msdn.microsoft.com/en-us/library/esew7y1w.aspx
-        add_definitions(-wd4251)
-    endif()
+if(MSVC)
+    message(WARNING "Building DLLs against the static VC run-time. This is not recommended if the DLLs are to be redistributed.")
+    # C4521: 'identifier' : class 'type' needs to have dll-interface to be used by clients of class 'type2'
+    # There will be couple hundreds of these so suppress them away, https://msdn.microsoft.com/en-us/library/esew7y1w.aspx
+    add_definitions(-wd4251)
 endif()
 
 UNIFY_ENVVARS_AND_CACHE(BOOST_ROOT)
@@ -214,6 +216,26 @@ if(BUILD_IFCGEOM AND WITH_OPENCASCADE)
     list(APPEND GEOMETRY_KERNELS opencascade)
 endif()
 
+message(STATUS "BUILD_IFCGEOM WITH_MANIFOLD: ${BUILD_IFCGEOM} ${WITH_MANIFOLD}")
+
+if(BUILD_IFCGEOM AND WITH_MANIFOLD)
+    find_package(manifold CONFIG REQUIRED)
+    if(TARGET manifold::manifold)
+        set(MANIFOLD_LIBRARIES manifold::manifold)
+    elseif(TARGET manifold)
+        set(MANIFOLD_LIBRARIES manifold)
+    else()
+        message(FATAL_ERROR "Unable to determine manifold target")
+    endif()
+    add_definitions(-DIFOPSH_WITH_MANIFOLD)
+    set(SWIG_DEFINES ${SWIG_DEFINES} -DIFOPSH_WITH_MANIFOLD)
+    list(APPEND GEOMETRY_KERNELS manifold)
+endif()
+
+if(BUILD_IFCGEOM)
+    list(APPEND GEOMETRY_KERNELS passthrough)
+endif()
+
 if(GLTF_SUPPORT)
     UNIFY_ENVVARS_AND_CACHE(JSON_INCLUDE_DIR)
     if(NOT JSON_INCLUDE_DIR)
@@ -540,9 +562,15 @@ if(NOT Boost_VERSION LESS 105800)
     add_definitions(-DBOOST_OPTIONAL_USE_OLD_DEFINITION_OF_NONE)
 endif()
 
+add_subdirectory(../src/plugin plugin)
+
 add_subdirectory(../src/ifcparse ifcparse)
 set(IFCOPENSHELL_LIBRARIES IfcParse)
 
+if(BUILD_IFCPARSE_EXPERIMENTAL_WRAPPER)
+    add_subdirectory(../src/wrappergen wrappergen)
+endif()
+
 if(BUILD_IFCGEOM)
     # CGAL::CGAL target already has dependencies resolved.
     if(WITH_CGAL AND CGAL_DIR)

diff --git a/src/bcf/bcf/v2/visinfo.py b/src/bcf/bcf/v2/visinfo.py
@@ -316,7 +316,7 @@ def build_viewpoint(element: entity_instance) -> mdl.VisualizationInfo:
     Returns:
         The BCF viewpoint definition.
     """
-    ifc_file = element.wrapped_data.file
+    ifc_file = element.file
     unit_scale = ifcopenshell.util.unit.calculate_unit_scale(ifc_file)
     elem_placement = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
     elem_placement[:3, 3] *= unit_scale

diff --git a/src/bcf/bcf/v3/visinfo.py b/src/bcf/bcf/v3/visinfo.py
@@ -316,7 +316,7 @@ def build_viewpoint(element: entity_instance) -> mdl.VisualizationInfo:
     Returns:
         The BCF viewpoint definition.
     """
-    ifc_file = element.wrapped_data.file
+    ifc_file = element.file
     unit_scale = ifcopenshell.util.unit.calculate_unit_scale(ifc_file)
     elem_placement = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
     elem_placement[:3, 3] *= unit_scale

diff --git a/src/bonsai/bonsai/bim/helper.py b/src/bonsai/bonsai/bim/helper.py
@@ -181,7 +181,7 @@ def import_attributes(
         info = {a.name(): None for a in attributes}
         info["type"] = element
     else:
-        assert (entity := element.wrapped_data.declaration().as_entity())
+        assert (entity := element.declaration().as_entity())
         attributes = entity.all_attributes()
         info = element.get_info()
     for attribute in attributes:

diff --git a/src/bonsai/bonsai/bim/module/cost/data.py b/src/bonsai/bonsai/bim/module/cost/data.py
@@ -206,7 +206,7 @@ def _load_cost_item_quantities(cls, cost_item: ifcopenshell.entity_instance, dat
                 data["UnitSymbol"] = ifcopenshell.util.unit.get_unit_symbol(unit)
             if quantity.is_a("IfcPhysicalSimpleQuantity"):
                 measure_class = (
-                    quantity.wrapped_data.declaration()
+                    quantity.declaration()
                     .as_entity()
                     .attribute_by_index(3)
                     .type_of_attribute()

diff --git a/src/bonsai/bonsai/bim/module/debug/operator.py b/src/bonsai/bonsai/bim/module/debug/operator.py
@@ -89,7 +89,7 @@ def poll(cls, context):
         return tool.Ifc.get()
 
     def execute(self, context):
-        print(tool.Ifc.get().wrapped_data.to_string())
+        print(tool.Ifc.get().to_string())
         return {"FINISHED"}
 
 

diff --git a/src/bonsai/bonsai/bim/module/geometry/operator.py b/src/bonsai/bonsai/bim/module/geometry/operator.py
@@ -785,7 +785,7 @@ def lock_error_message(name: str) -> str:
 
 
 def calc_delete_is_batch(ifc_file: ifcopenshell.file, context: bpy.types.Context) -> bool:
-    total_elements = len(tool.Ifc.get().wrapped_data.entity_names())
+    total_elements = len(tool.Ifc.get().entity_names())
     total_polygons = sum([len(o.data.polygons) for o in context.selected_objects if o.type == "MESH"])
     # These numbers are a bit arbitrary, but basically batching is only
     # really necessary on large models and large geometry removals.

diff --git a/src/bonsai/bonsai/bim/module/search/data.py b/src/bonsai/bonsai/bim/module/search/data.py
@@ -93,7 +93,7 @@ def colourscheme_key(cls):
         element = tool.Ifc.get_entity(obj)
         if not element:
             return default
-        keys = [a.name() for a in element.wrapped_data.declaration().as_entity().all_attributes()]
+        keys = [a.name() for a in element.declaration().as_entity().all_attributes()]
         psets = ifcopenshell.util.element.get_psets(element)
         for pset, properties in psets.items():
             if pset.endswith("Common"):
@@ -124,7 +124,7 @@ def element_key(cls):
         element = tool.Ifc.get_entity(obj)
         if not element:
             return []
-        keys = [a.name() for a in element.wrapped_data.declaration().as_entity().all_attributes()]
+        keys = [a.name() for a in element.declaration().as_entity().all_attributes()]
         psets = ifcopenshell.util.element.get_psets(element, psets_only=True)
         for pset, properties in psets.items():
             if pset.endswith("Common"):

diff --git a/src/bonsai/bonsai/tool/geometry.py b/src/bonsai/bonsai/tool/geometry.py
@@ -1800,7 +1800,7 @@ def import_item_attributes(cls, obj: bpy.types.Object) -> None:
         item = tool.Ifc.get().by_id(props.ifc_definition_id)
         allowed_attributes = [
             a.name()
-            for a in item.wrapped_data.declaration().as_entity().all_attributes()
+            for a in item.declaration().as_entity().all_attributes()
             if a.type_of_attribute()._is("IfcLengthMeasure")
         ]
 

diff --git a/src/examples/IfcAdvancedHouse.cpp b/src/examples/IfcAdvancedHouse.cpp
@@ -40,9 +40,8 @@
 
 #define IfcSchema Ifc2x3
 #include "../ifcparse/macros.h"
-#include "../ifcparse/Ifc2x3.h"
-#include "../ifcparse/IfcBaseClass.h"
-#include "../ifcparse/IfcHierarchyHelper.h"
+#include "../ifcparse/schemas/Ifc2x3.h"
+#include "../ifcparse/hierarchy_helper.h"
 
 #include "../ifcgeom/Serialization/Serialization.h"
 
@@ -57,18 +56,18 @@ void createGroundShape(TopoDS_Shape& shape);
 
 int main() {
 
-	// The IfcHierarchyHelper is a subclass of the regular IfcFile that provides several
+	// The hierarchy_helper is a subclass of the regular file that provides several
 	// convenience functions for working with geometry in IFC files.
-	IfcHierarchyHelper<IfcSchema> file;
-	file.header().file_name()->setname("IfcAdvancedHouse.ifc");
+	hierarchy_helper<IfcSchema> file;
+	file.header().file_name().setname("IfcAdvancedHouse.ifc");
 
-	IfcSchema::IfcBuilding* building = file.addBuilding();
+	auto building = file.addBuilding();
 	// By adding a building, a hierarchy has been automatically created that consists of the following
 	// structure: IfcProject > IfcSite > IfcBuilding
 
 	// Lateron changing the name of the IfcProject can be done by obtaining a reference to the 
 	// project, which has been created automatically.
-	file.getSingle<IfcSchema::IfcProject>()->setName("IfcAdvancedHouse"s);
+	file.getSingle<IfcSchema::IfcProject>().setName("IfcAdvancedHouse"s);
 
 	// To demonstrate the ability to serialize arbitrary opencascade solids a building envelope is
 	// constructed by applying boolean operations. Naturally, in IFC, building elements should be 
@@ -91,13 +90,13 @@ int main() {
 	// IfcFacetedBRep. If it would not be a polyhedron, serialise() can only be successful when linked
 	// to the IFC4 model and with `advanced` set to `true` which introduces IfcAdvancedFace. It would
 	// return `0` otherwise.
-	IfcSchema::IfcProductDefinitionShape* building_shape = IfcGeom::serialise(STRINGIFY(IfcSchema), building_shell, false)->as<IfcSchema::IfcProductDefinitionShape>();
+	auto building_shape = IfcGeom::serialise(file, building_shell, false).as<IfcSchema::IfcProductDefinitionShape>();
 
-	file.addEntity(building_shape);
-	IfcSchema::IfcRepresentation* rep = *building_shape->Representations()->begin();
+	file.add_entity(building_shape);
+	auto rep = building_shape.Representations().begin();
 	rep->setContextOfItems(file.getRepresentationContext("model"));
 
-	building->setRepresentation(building_shape);
+	building.setRepresentation(building_shape);
 
 	// A pale white colour is assigned to the building.
 	setSurfaceColour(file, building_shape, 0.75, 0.73, 0.68);
@@ -107,18 +106,18 @@ int main() {
 	TopoDS_Shape shape;
 	createGroundShape(shape);
 
-	auto ground_representation = IfcGeom::serialise(STRINGIFY(IfcSchema), shape, true);
+	auto ground_representation = IfcGeom::serialise(file, shape, true);
 	if (!ground_representation) {
-		ground_representation = IfcGeom::tesselate(STRINGIFY(IfcSchema), shape, 100.);
+        ground_representation = IfcGeom::tesselate(file, shape, 100.);
 	}
-	file.getSingle<IfcSchema::IfcSite>()->setRepresentation(ground_representation->as<IfcSchema::IfcProductDefinitionShape>());
+	file.getSingle<IfcSchema::IfcSite>().setRepresentation(ground_representation.as<IfcSchema::IfcProductDefinitionShape>());
 
-	IfcSchema::IfcRepresentation::list::ptr ground_reps = file.getSingle<IfcSchema::IfcSite>()->Representation()->Representations();
-	for (IfcSchema::IfcRepresentation::list::it it = ground_reps->begin(); it != ground_reps->end(); ++it) {
-		(*it)->setContextOfItems(file.getRepresentationContext("Model"));
+	auto ground_reps = file.getSingle<IfcSchema::IfcSite>().Representation().Representations();
+	for (auto& rep : ground_reps) {
+		rep.setContextOfItems(file.getRepresentationContext("Model"));
 	}
-	file.addEntity(ground_representation);
-	setSurfaceColour(file, ground_representation->as<IfcSchema::IfcProductDefinitionShape>(), 0.15, 0.25, 0.05);
+	file.add_entity(ground_representation);
+	setSurfaceColour(file, ground_representation.as<IfcSchema::IfcProductDefinitionShape>(), 0.15, 0.25, 0.05);
 
     /*
     // Note that IFC lacks elementary surfaces that STEP does have, such as spherical_surface.