fixed linker being slow on OSX

platform/osx/detect.py

@@ -76,6 +76,7 @@ def configure(env):
     elif env["target"] == "debug":
         env.Prepend(CCFLAGS=["-g3"])
         env.Prepend(CPPDEFINES=["DEBUG_ENABLED"])
+        env.Prepend(LINKFLAGS=["-Xlinker", "-no_deduplicate"])
 
     ## Architecture