From e100cf5a345b18321f5a6d836a3afd3110a08e4f Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Fri, 14 Aug 2026 17:38:47 +0500
Subject: [PATCH] Fix examples linking errors for shared build (incorrect
 attributes order)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

E.g. IfcAdvancedHouse:
```
/usr/bin/x86_64-linux-gnu-ld.bfd: CMakeFiles/IfcAdvancedHouse.dir/IfcAdvancedHouse.cpp.o: in function `main':
IfcAdvancedHouse.cpp:(.text.startup.main+0x137): undefined reference to `hierarchy_helper<Ifc4x3_add2>::addBuilding(Ifc4x3_add2::IfcSite, Ifc4x3_add2::IfcOwnerHistory)'
/usr/bin/x86_64-linux-gnu-ld.bfd: IfcAdvancedHouse.cpp:(.text.startup.main+0x7c7): undefined reference to `hierarchy_helper<Ifc4x3_add2>::getRepresentationContext(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
/usr/bin/x86_64-linux-gnu-ld.bfd: IfcAdvancedHouse.cpp:(.text.startup.main+0x931): undefined reference to `hierarchy_helper<Ifc4x3_add2>::getRepresentationContext(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
```

Noticed by addressing gcc warning gcc warning that attribute order is incorrect:
```
//src/ifcparse/hierarchy_helper.i:721:31: warning: attribute ignored in explicit instantiation ‘class hierarchy_helper<Ifc2x3>’ [-Wattributes]
  721 | template IFC_SCHEMA_API class hierarchy_helper<IfcSchema>;
      |                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~
//src/ifcparse/hierarchy_helper.i:721:31: note: no attribute can be applied to an explicit instantiation
```
---
 src/ifcparse/hierarchy_helper.i | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ifcparse/hierarchy_helper.i b/src/ifcparse/hierarchy_helper.i
index c6ba3b2b92..245033ec5b 100644
--- a/src/ifcparse/hierarchy_helper.i
+++ b/src/ifcparse/hierarchy_helper.i
@@ -718,7 +718,7 @@ typename Schema::IfcGeometricRepresentationSubContext hierarchy_helper<Schema>::
     return rep_subcontext;
 }
 
-template IFC_SCHEMA_API class hierarchy_helper<IfcSchema>;
+template class IFC_SCHEMA_API hierarchy_helper<IfcSchema>;
 
 template IFC_SCHEMA_API ifcopenshell::hierarchy_detail::surface_style_type<IfcSchema>
 addStyleAssignment<IfcSchema>(hierarchy_helper<IfcSchema>&, double, double, double, double);