Add BENCHMARK_TEMPLATE1 macro

include/benchmark/benchmark_api.h

@@ -445,7 +445,7 @@ class Benchmark {
 // BENCHMARK_TEMPLATE(BM_Foo, 1);
 //
 // will register BM_Foo<1> as a benchmark.
-#define BENCHMARK_TEMPLATE(n, a)                             \
+# define BENCHMARK_TEMPLATE1(n, a)                           \
   static ::benchmark::internal::Benchmark* BENCHMARK_CONCAT( \
       __benchmark_, n, __LINE__) BENCHMARK_UNUSED =          \
       (new ::benchmark::internal::Benchmark(#n "<" #a ">", n<a>))
@@ -455,6 +455,16 @@ class Benchmark {
       __benchmark_, n, __LINE__) BENCHMARK_UNUSED =          \
       (new ::benchmark::internal::Benchmark(#n "<" #a "," #b ">", n<a, b>))
 
+#if __cplusplus >= 201103L
+#define BENCHMARK_TEMPLATE(n, ...)                           \
+  static ::benchmark::internal::Benchmark* BENCHMARK_CONCAT( \
+      _benchmark_, n, __LINE__) BENCHMARK_UNUSED =           \
+      (new ::benchmark::internal::Benchmark(                 \
+        #n "<" #__VA_ARGS__ ">", n< __VA_ARGS__ > ))
+#else
+#define BENCHMARK_TEMPLATE(n, a) BENCHMARK_TEMPLATE1(n, a)
+#endif
+
 // Helper macro to create a main routine in a test that runs the benchmarks
 #define BENCHMARK_MAIN()                             \
   int main(int argc, const char** argv) {            \