Redeclaration issues in c++ - preprocessor directive

[raymondturrisi]

bindings.h should include a preprocessor directive to prevent redeclarations when used in libraries, and in applications which use these libraries (easy issue to run into in MOOS or ROS). i.e.

bindings.h

#ifndef XYZ_HEADER
#define XYZ_HEADER
// Declarations
#endif

or

bindings.h

#pragma once
// Declarations

Currently I get compiler issues and have to manually add #pragma once at the top of the file after it is downloaded/installed, if I end up cleaning the build system.