New 2018 and later build setup (#1001)

wpilibcExamples/src/main/cpp/examples/AxisCameraSample/src/Robot.cpp

@@ -57,7 +57,7 @@ private:
 		}
 	}
 
-	void RobotInit() {
+	void RobotInit() override {
 		// We need to run our vision program in a separate Thread.
 		// If not, our robot program will not run
 		std::thread visionThread(VisionThread);

wpilibcExamples/src/main/cpp/examples/GearsBot/src/Subsystems/Elevator.h

@@ -32,14 +32,14 @@ public:
 	 * Use the potentiometer as the PID sensor. This method is automatically
 	 * called by the subsystem.
 	 */
-	double ReturnPIDInput();
+	double ReturnPIDInput() override;
 
 	/**
 	 * Use the motor as the PID output. This method is automatically called
 	 * by
 	 * the subsystem.
 	 */
-	void UsePIDOutput(double d);
+	void UsePIDOutput(double d) override;
 
 private:
 	frc::Spark m_motor{5};

wpilibcExamples/src/main/cpp/examples/IntermediateVision/src/Robot.cpp

@@ -9,6 +9,7 @@
 
 #include <CameraServer.h>
 #include <IterativeRobot.h>
+#include <llvm/raw_ostream.h>
 #include <opencv2/core/core.hpp>
 #include <opencv2/core/types.hpp>
 #include <opencv2/imgproc/imgproc.hpp>
@@ -21,6 +22,7 @@
  * processing.
  */
 class Robot : public frc::IterativeRobot {
+#if defined(__linux__)
 private:
 	static void VisionThread() {
 		// Get the USB camera from CameraServer
@@ -58,12 +60,18 @@ private:
 			outputStream.PutFrame(mat);
 		}
 	}
+#endif
 
-	void RobotInit() {
-		// We need to run our vision program in a separate Thread.
-		// If not, our robot program will not run
+	void RobotInit() override {
+	// We need to run our vision program in a separate Thread.
+	// If not, our robot program will not run
+#if defined(__linux__)
 		std::thread visionThread(VisionThread);
 		visionThread.detach();
+#else
+		llvm::errs() << "Vision only available on Linux.\n";
+		llvm::errs().flush();
+#endif
 	}
 };
 

wpilibcExamples/src/main/cpp/examples/MecanumDrive/src/Robot.cpp

@@ -16,7 +16,7 @@
  */
 class Robot : public frc::IterativeRobot {
 public:
-	void RobotInit() {
+	void RobotInit() override {
 		// Invert the left side motors
 		// You may need to change or remove this to match your robot
 		m_frontLeft.SetInverted(true);

wpilibcExamples/src/main/cpp/examples/PotentiometerPID/src/Robot.cpp

@@ -44,7 +44,7 @@ private:
 	static constexpr int kJoystickChannel = 0;
 
 	// Bottom, middle, and top elevator setpoints
-	static constexpr std::array<double, 3> kSetPoints = {1.0, 2.6, 4.3};
+	static constexpr std::array<double, 3> kSetPoints = {{1.0, 2.6, 4.3}};
 
 	/* proportional, integral, and derivative speed constants; motor
 	 * inverted

wpilibcExamples/src/main/cpp/examples/QuickVision/src/Robot.cpp

@@ -7,6 +7,7 @@
 
 #include <CameraServer.h>
 #include <IterativeRobot.h>
+#include <llvm/raw_ostream.h>
 
 /**
  * Uses the CameraServer class to automatically capture video from a USB webcam
@@ -17,8 +18,13 @@
  */
 class Robot : public frc::IterativeRobot {
 public:
-	void RobotInit() {
+	void RobotInit() override {
+#if defined(__linux__)
 		CameraServer::GetInstance()->StartAutomaticCapture();
+#else
+		llvm::errs() << "Vision only available on Linux.\n";
+		llvm::errs().flush();
+#endif
 	}
 };