Add missing EXPCL_PANDAPHYSX symbols

panda/src/physx/physxJointDriveDesc.h

@@ -25,7 +25,7 @@
 // Description : Used to describe drive properties for a
 //               PhysxD6Joint.
 ////////////////////////////////////////////////////////////////////
-class PhysxJointDriveDesc : public PhysxEnums {
+class EXPCL_PANDAPHYSX PhysxJointDriveDesc : public PhysxEnums {
 
 PUBLISHED:
   INLINE PhysxJointDriveDesc();

panda/src/physx/physxJointLimitDesc.h

@@ -23,7 +23,7 @@
 //       Class : PhysxJointLimitDesc
 // Description : Describes a joint limit.
 ////////////////////////////////////////////////////////////////////
-class PhysxJointLimitDesc {
+class EXPCL_PANDAPHYSX PhysxJointLimitDesc {
 
 PUBLISHED:
   INLINE PhysxJointLimitDesc();

panda/src/physx/physxJointLimitSoftDesc.h

@@ -23,7 +23,7 @@
 //       Class : PhysxJointLimitSoftDesc
 // Description : Describes a joint limit.
 ////////////////////////////////////////////////////////////////////
-class PhysxJointLimitSoftDesc {
+class EXPCL_PANDAPHYSX PhysxJointLimitSoftDesc {
 
 PUBLISHED:
   INLINE PhysxJointLimitSoftDesc();

panda/src/physx/physxMotorDesc.h

@@ -28,7 +28,7 @@
 //               - PhysxPulleyJoint
 //               - PhysxRevoluteJoint
 ////////////////////////////////////////////////////////////////////
-class PhysxMotorDesc {
+class EXPCL_PANDAPHYSX PhysxMotorDesc {
 
 PUBLISHED:
   INLINE PhysxMotorDesc();

panda/src/physx/physxSpringDesc.h

@@ -25,7 +25,7 @@
 //               integrated, so even high spring and damper
 //               coefficients should be robust.
 ////////////////////////////////////////////////////////////////////
-class PhysxSpringDesc {
+class EXPCL_PANDAPHYSX PhysxSpringDesc {
 
 PUBLISHED:
   INLINE PhysxSpringDesc();