May 2017 release of OR-Tools

We have just released a new version of OR-Tools on

Release notes:


New directory structure in C++

We have changed the source/include structure of or-tools when using C++. The goal is to provide better encapsulation of the C++ include files. It also has the benefit of aligning the C++ and the python directory structures.
  • src/ has been renamed ortools/.
  • All #include command in C++ files now have the prefix ortools added. #include "constraint/constraint_solver.h" is now #include "ortools/constraint/constraint_solver.h".

New features

Bazel support

You can now build or-tools with bazel, Google's build tool. It works on Linux and Mac OS X. After downloading bazel version 0.4.5 or later, change directory to or-tools and build the examples: bazel build examples/cpp/....

Routing

We have implemented the support for breaks (e.g., vehicle downtime due to drivers eating lunch)in the routing library. This feature is shown in the cvrptw_with_breaks.cc example.

SCIP support

The linear solver wrapper now support SCIP 4.0. You now need to build SCIP first, and then tell or-tools that you will use it. Instructions are available here.

GLPK support

We have also changed the way with build with GLPK. See here.

Cleanups

  • We have removed all usage of hash_map, hash_set in the C++ codebase as they are deprecated. They were replaced by unordered_map and unordered_set from the STL.
  • Cleanup of the C# makefiles, courtesy of Michael Powell.

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