diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1ca54af5f..20208bd23 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -133,6 +133,7 @@ if(NOT MSVC)
   if(COMPILER_SUPPORT_WERROR)
     set(CMAKE_REQUIRED_FLAGS "-Werror")
   endif()
+  ei_add_cxx_compiler_flag("-static")
   ei_add_cxx_compiler_flag("-pedantic")
   ei_add_cxx_compiler_flag("-Wall")
   ei_add_cxx_compiler_flag("-Wextra")
diff --git a/Eigen/src/Core/arch/CUDA/PacketMathHalf.h b/Eigen/src/Core/arch/CUDA/PacketMathHalf.h
index 4f8958c38..d670f3718 100644
--- a/Eigen/src/Core/arch/CUDA/PacketMathHalf.h
+++ b/Eigen/src/Core/arch/CUDA/PacketMathHalf.h
@@ -839,11 +839,6 @@ template<> EIGEN_STRONG_INLINE Packet8h pmul<Packet8h>(const Packet8h& a, const
   return float2half(rf);
 }
 
-template<> EIGEN_STRONG_INLINE half predux<Packet8h>(const Packet8h& from) {
-  Packet8f from_float = half2float(from);
-  return half(predux(from_float));
-}
-
 template<> EIGEN_STRONG_INLINE Packet8h pgather<Eigen::half, Packet8h>(const Eigen::half* from, Index stride)
 {
   Packet8h result;