-void retrace_call_cgl(Trace::Call &call);
-void retrace_call_glx(Trace::Call &call);
-void retrace_call_wgl(Trace::Call &call);
+extern const retrace::Entry gl_callbacks[];
+extern const retrace::Entry cgl_callbacks[];
+extern const retrace::Entry glx_callbacks[];
+extern const retrace::Entry wgl_callbacks[];