OpenVDB 4.0.0: error: no matching function for call to ‘std::vector<std::shared_ptr<openvdb::v4_0_0::GridBase> >::push_back(openvdb::v4_0_0::GridBase::ConstPtr)’ m_grids->push_back(grid.copyGrid()); about openvdb

[OpenVDB-DevTeam]

This is probably due to the API change to Grid::copyGrid() in OpenVDB 4.0.0, which addressed a const-correctness issue. The simplest fix would be to add a const_cast (e.g., m_grids->push_back(const_cast<GridBase&>(grid).copyGrid())). There might be other, possibly better solutions, but that would be for the author of that Blender code to decide.

[dracwyrm]

Thanks for the reply. I guess I had something different in mind with the ABI 3 Compatibility in making it the same interface for programs, but that's API. XD

[OpenVDB-DevTeam]

In ABI 3 compatibility mode you should get the old behavior, but it doesn't look like you're building with ABI 3 compatibility. Keep in mind that OpenVDB is mostly header code, so macros like OPENVDB_3_ABI_COMPATIBLE need to be defined when you compile any code that includes OpenVDB headers, not just when you compile the OpenVDB library.

[dracwyrm]

Compiling Blender with the added gcc command line of "-DOPENVDB_3_ABI_COMPATIBLE" worked perfectly. Thanks for mentioning that the programs including OpenVDB need to have that set as well. I didn't need to modify the Blender code at all.

Sorry if I missed the mentioning that programs including OpenVDB need to enable ABI 3 macro in the documentation. If it's not documented, can it be mentioned somewhere?

Thanks. :)