Exception Handling

Compiling code with exception handling adds some overhead in terms of both executable size and performance.

PathEngine uses a call-back based approach to error handling and does not throw or catch any exceptions explicitly, but we do include some STL headers, which, by default, do generally add a requirement for exception handling.

In many cases it's possible to turn off exception code in the STL, by adding a suitable preprocessor define, with suitable compiler switches then added to turn off exception handling instrumentation.