2.1 Example directories

The examples are in‘/usr/share/swi-prolog/doc/packages/examples/protobufs`, which is part of the swi-prolog-doc package. Each directory has a README. To run these, you will need to copy them to a writeable directory.

• bootstrap - This contains the file common.mk file, which is used by the demo and interop Makefiles.
• demo - the test goal runs some examples.
• interop - used for testing interoperability with C++ and Python Additional tests are in test\_protobufs.pl.

  See also Addressbook example (section 1.3.3).

  The protobuf compiler (protoc) uses two protobuf formats to communicate with the plugin:

• plugin.proto
• descriptor.proto The Prolog code that were generated from these, as part of the bootstrap process, are:
• plugin\_pb.pl
• descriptor\_pb.pl