2 files changed, 7 insertions, 0 deletions
diff --git a/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.H b/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.H
index 9a3d06086..1f0332103 100644
--- a/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.H
+++ b/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.H
@@ -42,6 +42,7 @@ class Fl_Cocoa_Gl_Window_Driver : public Fl_Gl_Window_Driver {
   virtual char *alpha_mask_for_string(const char *str, int n, int w, int h, Fl_Fontsize fs);
   virtual Fl_RGB_Image* capture_gl_rectangle(int x, int y, int w, int h);
   virtual bool need_scissor() { return true; }
+  virtual void* GetProcAddress(const char *procName);
   void apply_scissor();
 };
 
diff --git a/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.cxx b/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.cxx
index a77ff7776..4d47c3015 100644
--- a/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.cxx
+++ b/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.cxx
@@ -25,6 +25,7 @@
 #include <FL/Fl_Graphics_Driver.H>
 #include <OpenGL/OpenGL.h>
 #include <FL/Fl_Image_Surface.H>
+#include <dlfcn.h>
 
 extern void gl_texture_reset();
 
@@ -293,6 +294,11 @@ Fl_RGB_Image* Fl_Cocoa_Gl_Window_Driver::capture_gl_rectangle(int x, int y, int
 }
 
 
+void* Fl_Cocoa_Gl_Window_Driver::GetProcAddress(const char *procName) {
+  return dlsym(RTLD_DEFAULT, procName);
+}
+
+
 FL_EXPORT NSOpenGLContext *fl_mac_glcontext(GLContext rc) {
   return (NSOpenGLContext*)rc;
 }