Workaround gcc 4.8's new -Wunused-local-typedefs interaction with nvcc

Author: jaredhoberock

thrust/detail/config/config.h

@@ -33,4 +33,5 @@
 #include <thrust/detail/config/compiler_fence.h>
 #include <thrust/detail/config/forceinline.h>
 #include <thrust/detail/config/hd_warning_disable.h>
+#include <thrust/detail/config/global_workarounds.h>
 

thrust/detail/config/global_workarounds.h

@@ -0,0 +1,27 @@
+/*
+ *  Copyright 2008-2013 NVIDIA Corporation
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#pragma once
+
+#include <thrust/detail/config/compiler.h>
+
+// XXX workaround gcc 4.8+'s complaints about unused local typedefs by silencing them globally
+#if defined(THRUST_GCC_VERSION) && (THRUST_GCC_VERSION >= 40800)
+#  if defined(__NVCC__) && (CUDA_VERSION >= 6000)
+#    pragma GCC diagnostic ignored "-Wunused-local-typedefs"
+#  endif // nvcc & cuda 6+
+#endif // gcc 4.8
+