[wpimath] Explicitly export wpimath symbols

Co-authored-by: Tyler Veness <calcmogul@gmail.com>

wpimath/src/main/native/include/frc/kinematics/ChassisSpeeds.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <wpi/SymbolExports.h>
+
 #include "frc/geometry/Rotation2d.h"
 #include "units/angular_velocity.h"
 #include "units/velocity.h"
@@ -20,7 +22,7 @@ namespace frc {
  * never have a dy component because it can never move sideways. Holonomic
  * drivetrains such as swerve and mecanum will often have all three components.
  */
-struct ChassisSpeeds {
+struct WPILIB_DLLEXPORT ChassisSpeeds {
   /**
    * Represents forward velocity w.r.t the robot frame of reference. (Fwd is +)
    */

wpimath/src/main/native/include/frc/kinematics/DifferentialDriveKinematics.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <wpi/SymbolExports.h>
+
 #include "frc/kinematics/ChassisSpeeds.h"
 #include "frc/kinematics/DifferentialDriveWheelSpeeds.h"
 #include "units/angle.h"
@@ -19,7 +21,7 @@ namespace frc {
  * velocity components whereas forward kinematics converts left and right
  * component velocities into a linear and angular chassis speed.
  */
-class DifferentialDriveKinematics {
+class WPILIB_DLLEXPORT DifferentialDriveKinematics {
  public:
   /**
    * Constructs a differential drive kinematics object.

wpimath/src/main/native/include/frc/kinematics/DifferentialDriveOdometry.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <wpi/SymbolExports.h>
+
 #include "DifferentialDriveKinematics.h"
 #include "frc/geometry/Pose2d.h"
 #include "units/length.h"
@@ -21,7 +23,7 @@ namespace frc {
  * It is important that you reset your encoders to zero before using this class.
  * Any subsequent pose resets also require the encoders to be reset to zero.
  */
-class DifferentialDriveOdometry {
+class WPILIB_DLLEXPORT DifferentialDriveOdometry {
  public:
   /**
    * Constructs a DifferentialDriveOdometry object.

wpimath/src/main/native/include/frc/kinematics/DifferentialDriveWheelSpeeds.h

@@ -4,13 +4,15 @@
 
 #pragma once
 
+#include <wpi/SymbolExports.h>
+
 #include "units/velocity.h"
 
 namespace frc {
 /**
  * Represents the wheel speeds for a differential drive drivetrain.
  */
-struct DifferentialDriveWheelSpeeds {
+struct WPILIB_DLLEXPORT DifferentialDriveWheelSpeeds {
   /**
    * Speed of the left side of the robot.
    */

wpimath/src/main/native/include/frc/kinematics/MecanumDriveKinematics.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <wpi/SymbolExports.h>
+
 #include "Eigen/Core"
 #include "Eigen/QR"
 #include "frc/geometry/Translation2d.h"
@@ -35,7 +37,7 @@ namespace frc {
  * Forward kinematics is also used for odometry -- determining the position of
  * the robot on the field using encoders and a gyro.
  */
-class MecanumDriveKinematics {
+class WPILIB_DLLEXPORT MecanumDriveKinematics {
  public:
   /**
    * Constructs a mecanum drive kinematics object.

wpimath/src/main/native/include/frc/kinematics/MecanumDriveOdometry.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <wpi/SymbolExports.h>
 #include <wpi/timestamp.h>
 
 #include "frc/geometry/Pose2d.h"
@@ -22,7 +23,7 @@ namespace frc {
  * path following. Furthermore, odometry can be used for latency compensation
  * when using computer-vision systems.
  */
-class MecanumDriveOdometry {
+class WPILIB_DLLEXPORT MecanumDriveOdometry {
  public:
   /**
    * Constructs a MecanumDriveOdometry object.

wpimath/src/main/native/include/frc/kinematics/MecanumDriveWheelSpeeds.h

@@ -4,13 +4,15 @@
 
 #pragma once
 
+#include <wpi/SymbolExports.h>
+
 #include "units/velocity.h"
 
 namespace frc {
 /**
  * Represents the wheel speeds for a mecanum drive drivetrain.
  */
-struct MecanumDriveWheelSpeeds {
+struct WPILIB_DLLEXPORT MecanumDriveWheelSpeeds {
   /**
    * Speed of the front-left wheel.
    */

wpimath/src/main/native/include/frc/kinematics/SwerveModuleState.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <wpi/SymbolExports.h>
+
 #include "frc/geometry/Rotation2d.h"
 #include "units/angle.h"
 #include "units/math.h"
@@ -13,7 +15,7 @@ namespace frc {
 /**
  * Represents the state of one swerve module.
  */
-struct SwerveModuleState {
+struct WPILIB_DLLEXPORT SwerveModuleState {
   /**
    * Speed of the wheel of the module.
    */