Unexpected consequence of #7365 - previously `OPENCASCADE_LIBRARIES` supposed to be a list of libraries filepaths, but after refactor `OpenCASCADE_LIBRARIES` end up being both list of library names and list of filepaths.
And since link directories for the names was not provided, it failed to find the libraries to link.
If using OpenCASCADEconfig it wouldn't fail as cmake would evaluate library names as imported target names.
To fix it and simplify it even further, in case of manually provided paths, it now creates `OpenCASCADE_INTERFACE` target and stores it in `OpenCASCADE_LIBRARIES` - target will automatically have all the includes, library names and library dirs.
`EIgen::Eigen` target used in #7340 for linking exists only if there's a cmake config, while there are cases when there's just include directory. Added same name interface target to mimic config.
Noticed testing command from #7277. I believe Serializers it not actually needed to build IfcGeomServer.
Example error:
```
/usr/bin/ld: cannot find -lSerializers: No such file or directory
```
The issue was with ci.yml - it was using system boost shared libraries (since Boost_USE_STATIC_LIBS by default is OFF), but CGALConfig was overriding leading to compilation issues.
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
```
Esteban DUGUEPEROUX