ortools and protobuf-lite ?

[cquenelle]

I'm using OR-Tools 7.8 and protobuf 3.12.2.

I'm trying to make OR-Tools use protobuf-lite to get rid of the static initializers that it creates in the ortools library. This is a performance issue for me.

If my project is not using the parts of OR-Tools that depend on non-lite pieces of protobuf, I'm wondering how hard it would be to disable them.

I'm looking at PORTABLE_PLATFORM in the OR-Tools code base. It seems to disable some external dependencies. But I haven't found any documentation for it yet. How is PORTABLE_PLATFORM normally used?

Does anyone have any guidance to offer before I start down this road?

Chris

[lperron]

Basically, if you define PORTABLE_PLATFORM, it disable non proto-lite usage in port/proto_utils.h

I am not sure you want to define PORTABLE_PLATFORM everywhere.

[lperron]

On master, I have pushed both portable and non portable versions of the code in the ortools/port/ directory.

If you compile with 'PORTABLE_PLATFORM' defined, it should only use proto-lite compatible APIs.

[cquenelle]

Thanks for the info, I figured out my issue.