cocoadisplay: Add missing EXPCL_PANDA_COCOADISPLAY

panda/src/cocoadisplay/cocoaGraphicsBuffer.h

@@ -21,7 +21,7 @@
  * This is a light wrapper around GLGraphicsBuffer (ie. FBOs) to interface
  * with Cocoa contexts, so that it can be used without a host window.
  */
-class CocoaGraphicsBuffer : public GLGraphicsBuffer {
+class EXPCL_PANDA_COCOADISPLAY CocoaGraphicsBuffer : public GLGraphicsBuffer {
 public:
   CocoaGraphicsBuffer(GraphicsEngine *engine, GraphicsPipe *pipe,
                       const std::string &name,

panda/src/cocoadisplay/cocoaGraphicsPipe.h

@@ -33,7 +33,7 @@ class FrameBufferProperties;
  * This graphics pipe represents the interface for creating OpenGL graphics
  * windows on a Cocoa-based (e.g.  Mac OS X) client.
  */
-class CocoaGraphicsPipe : public GraphicsPipe {
+class EXPCL_PANDA_COCOADISPLAY CocoaGraphicsPipe : public GraphicsPipe {
 public:
   CocoaGraphicsPipe(CGDirectDisplayID display = CGMainDisplayID());
   virtual ~CocoaGraphicsPipe();

panda/src/cocoadisplay/cocoaGraphicsStateGuardian.h

@@ -26,7 +26,7 @@
  * A tiny specialization on GLGraphicsStateGuardian to add some Cocoa-specific
  * information.
  */
-class CocoaGraphicsStateGuardian : public GLGraphicsStateGuardian {
+class EXPCL_PANDA_COCOADISPLAY CocoaGraphicsStateGuardian : public GLGraphicsStateGuardian {
 public:
   INLINE const FrameBufferProperties &get_fb_properties() const;
   void get_properties(FrameBufferProperties &properties,

panda/src/cocoadisplay/cocoaGraphicsWindow.h

@@ -29,7 +29,7 @@
  * An interface to the Cocoa system for managing OpenGL windows under Mac OS
  * X.
  */
-class CocoaGraphicsWindow : public GraphicsWindow {
+class EXPCL_PANDA_COCOADISPLAY CocoaGraphicsWindow : public GraphicsWindow {
 public:
   CocoaGraphicsWindow(GraphicsEngine *engine, GraphicsPipe *pipe,
                       const std::string &name,