Not sure why it occurred only now, maybe after recent changes with shared libraries this problem just got more apparent and previously it was masked by some other library after mappings also using IfcGeom.
But the issue was that mapping were not linked against IfcGeom, though it's symbols were used in them. E.g. IfcSectionedSurface.cpp was using `has_loft` from `infra_sweep_helper`.
Issue occurred only on Linux - msvc and clang are less strict and probably do multiple passes to fetch symbols.
Example errors:
```
libgeometry_mapping_ifc4x3.a(IfcSectionedSolidHorizontal.cpp.o): In function `ifcopenshell::geometry::mapping_Ifc4x3::map_impl(Ifc4x3::IfcSectionedSolidHorizontal const*)':
IfcSectionedSolidHorizontal.cpp:(.text._ZN12ifcopenshell8geometry14mapping_Ifc4x38map_implEPKN6Ifc4x327IfcSectionedSolidHorizontalE+0x19a4): undefined reference to `ifcopenshell::geometry::make_loft(ifcopenshell::geometry::Settings const&, IfcUtil::IfcBaseClass const*, std::shared_ptr<ifcopenshell::geometry::taxonomy::function_item> const&, std::vector<ifcopenshell::geometry::cross_section, std::allocator<ifcopenshell::geometry::cross_section> >&)'
libgeometry_mapping_ifc4x3.a(IfcSectionedSurface.cpp.o): In function `ifcopenshell::geometry::mapping_Ifc4x3::map_impl(Ifc4x3::IfcSectionedSurface const*)':
IfcSectionedSurface.cpp:(.text._ZN12ifcopenshell8geometry14mapping_Ifc4x38map_implEPKN6Ifc4x319IfcSectionedSurfaceE+0x19c4): undefined reference to `ifcopenshell::geometry::make_loft(ifcopenshell::geometry::Settings const&, IfcUtil::IfcBaseClass const*, std::shared_ptr<ifcopenshell::geometry::taxonomy::function_item> const&, std::vector<ifcopenshell::geometry::cross_section, std::allocator<ifcopenshell::geometry::cross_section> >&)'
libgeometry_mapping_ifc4x3_tc1.a(IfcSectionedSolidHorizontal.cpp.o): In function `ifcopenshell::geometry::mapping_Ifc4x3_tc1::map_impl(Ifc4x3_tc1::IfcSectionedSolidHorizontal const*)':
IfcSectionedSolidHorizontal.cpp:(.text._ZN12ifcopenshell8geometry18mapping_Ifc4x3_tc18map_implEPKN10Ifc4x3_tc127IfcSectionedSolidHorizontalE+0x19a4): undefined reference to `ifcopenshell::geometry::make_loft(ifcopenshell::geometry::Settings const&, IfcUtil::IfcBaseClass const*, std::shared_ptr<ifcopenshell::geometry::taxonomy::function_item> const&, std::vector<ifcopenshell::geometry::cross_section, std::allocator<ifcopenshell::geometry::cross_section> >&)'
libgeometry_mapping_ifc4x3_tc1.a(IfcSectionedSurface.cpp.o): In function `ifcopenshell::geometry::mapping_Ifc4x3_tc1::map_impl(Ifc4x3_tc1::IfcSectionedSurface const*)':
IfcSectionedSurface.cpp:(.text._ZN12ifcopenshell8geometry18mapping_Ifc4x3_tc18map_implEPKN10Ifc4x3_tc119IfcSectionedSurfaceE+0x19c4): undefined reference to `ifcopenshell::geometry::make_loft(ifcopenshell::geometry::Settings const&, IfcUtil::IfcBaseClass const*, std::shared_ptr<ifcopenshell::geometry::taxonomy::function_item> const&, std::vector<ifcopenshell::geometry::cross_section, std::allocator<ifcopenshell::geometry::cross_section> >&)'
libgeometry_mapping_ifc4x3_add1.a(IfcSectionedSolidHorizontal.cpp.o): In function `ifcopenshell::geometry::mapping_Ifc4x3_add1::map_impl(Ifc4x3_add1::IfcSectionedSolidHorizontal const*)':
IfcSectionedSolidHorizontal.cpp:(.text._ZN12ifcopenshell8geometry19mapping_Ifc4x3_add18map_implEPKN11Ifc4x3_add127IfcSectionedSolidHorizontalE+0x19a4): undefined reference to `ifcopenshell::geometry::make_loft(ifcopenshell::geometry::Settings const&, IfcUtil::IfcBaseClass const*, std::shared_ptr<ifcopenshell::geometry::taxonomy::function_item> const&, std::vector<ifcopenshell::geometry::cross_section, std::allocator<ifcopenshell::geometry::cross_section> >&)'
libgeometry_mapping_ifc4x3_add1.a(IfcSectionedSurface.cpp.o):IfcSectionedSurface.cpp:(.text._ZN12ifcopenshell8geometry19mapping_Ifc4x3_add18map_implEPKN11Ifc4x3_add119IfcSectionedSurfaceE+0x19c4): more undefined references to `ifcopenshell::geometry::make_loft(ifcopenshell::geometry::Settings const&, IfcUtil::IfcBaseClass const*, std::shared_ptr<ifcopenshell::geometry::taxonomy::function_item> const&, std::vector<ifcopenshell::geometry::cross_section, std::allocator<ifcopenshell::geometry::cross_section> >&)' follow
collect2: error: ld returned 1 exit status
```
Andrej730