[Andrew Schreiber]

Originally Posted by wireties

The command-based robot does not link to any extra libraries, only to WPILib.a, so that is not the problem. Do you include a customized version of CommandBase.cpp in your project? I see that class has 3 static members - init, OI and examplesubsystem)? Do you have instances of all 3 declared somewhere?

CommandBase.cpp has been modified to look like:

#include "CommandBase.h"

#include "Commands/Scheduler.h"


CommandBase::CommandBase(const char *name) : Command(name) {
}

CommandBase::CommandBase() : Command() {
}

// Initialize a single static instance of all of your subsystems to NULL
OI* CommandBase::oi = NULL;
DriveTrain *CommandBase::chassis = NULL;
Elevator *CommandBase::elevator = NULL;
Intake *CommandBase::intake = NULL;
Shooter *CommandBase::shooter = NULL;

void CommandBase::init() {
    // Create a single static instance of all of your subsystems. The following
	// line should be repeated for each subsystem in the project.
	//examplesubsystem = new ExampleSubsystem();
	chassis = new DriveTrain();
	elevator = new Elevator();
	intake = new Intake();
	shooter = new Shooter();
	
	oi = new OI();
}

#ifndef COMMAND_BASE_H
#define COMMAND_BASE_H

#include "Commands/Command.h"
#include "Subsystems/DriveTrain.h"
#include "Subsystems/Elevator.h"
#include "Subsystems/Intake.h"
#include "Subsystems/Shooter.h"
#include "OI.h"


/**
 * The base for all commands. All atomic commands should subclass CommandBase.
 * CommandBase stores creates and stores each control system. To access a
 * subsystem elsewhere in your code in your code use CommandBase.examplesubsystem
 */
class CommandBase: public Command {
public:
	CommandBase(const char *name);
	CommandBase();
	static void init();
	// Create a single static instance of all of your subsystems
	static DriveTrain *chassis;
	static Elevator *elevator;
	static Intake *intake;
	static Shooter *shooter;
	static OI *oi;
};

#endif