diff --git a/CMakeLists.txt b/CMakeLists.txt
index d1ed70f91..7950aeb29 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -112,6 +112,9 @@ if(APPLE)
     if(DARWIN_VERSION GREATER 12)
         message(STATUS "Activating -std=c++11 flag for >= OS X 10.9")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -stdlib=libc++")
+    elseif(OSXLIBSTD)
+      message("Overriding default stdlib implementation ${OSXLIBSTD}")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=${OSXLIBSTD}")
     endif()
 endif()