diff --git a/config/BGQ_Clang++11_ToolChain.cmake b/config/BGQ_Clang++11_ToolChain.cmake
index e0f948e4d..4aa43ef51 100644
--- a/config/BGQ_Clang++11_ToolChain.cmake
+++ b/config/BGQ_Clang++11_ToolChain.cmake
@@ -1,7 +1,7 @@
 set(CMAKE_C_COMPILER mpiclang) 
 set(CMAKE_CXX_COMPILER mpiclang++11)
 
-set(GNU_OPTS "-O3 -g -ffast-math -fopenmp -fstrict-aliasing -Wno-deprecated -Wno-unused-value -Wno-type-safety") 
+set(GNU_OPTS "-O3 -g -ffast-math -fopenmp -fstrict-aliasing -Wno-deprecated -Wno-unused-value -Wno-type-safety -Wno-undefined-var-template")
 set(GNU_FLAGS "-Drestrict=__restrict__ -DADD_ -DHAVE_MASS -DHAVE_MASSV -DSPLINEFLOAT -DBGQPX -D__forceinline=inline")
 set(CMAKE_CXX_FLAGS "${GNU_FLAGS} ${GNU_OPTS} -ftemplate-depth-60")
 set(CMAKE_C_FLAGS "${GNU_FLAGS} ${GNU_OPTS} -std=c99" )