Index: openmp/trunk/cmake/HandleOpenMPOptions.cmake
===================================================================
--- openmp/trunk/cmake/HandleOpenMPOptions.cmake
+++ openmp/trunk/cmake/HandleOpenMPOptions.cmake
@@ -13,4 +13,7 @@
   append_if(OPENMP_HAVE_WERROR_FLAG "-Werror" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
 endif()
 
-append_if(OPENMP_HAVE_STD_CPP11_FLAG "-std=c++11" CMAKE_CXX_FLAGS)
\ No newline at end of file
+append_if(OPENMP_HAVE_STD_GNUPP11_FLAG "-std=gnu++11" CMAKE_CXX_FLAGS)
+if (NOT OPENMP_HAVE_STD_GNUPP11_FLAG)
+  append_if(OPENMP_HAVE_STD_CPP11_FLAG "-std=c++11" CMAKE_CXX_FLAGS)
+endif()
Index: openmp/trunk/cmake/config-ix.cmake
===================================================================
--- openmp/trunk/cmake/config-ix.cmake
+++ openmp/trunk/cmake/config-ix.cmake
@@ -3,4 +3,5 @@
 
 check_c_compiler_flag(-Werror OPENMP_HAVE_WERROR_FLAG)
 
-check_cxx_compiler_flag(-std=c++11 OPENMP_HAVE_STD_CPP11_FLAG)
\ No newline at end of file
+check_cxx_compiler_flag(-std=gnu++11 OPENMP_HAVE_STD_GNUPP11_FLAG)
+check_cxx_compiler_flag(-std=c++11 OPENMP_HAVE_STD_CPP11_FLAG)