Show --benchmark_cooldown in benchmark_zlib --help output

Use the custom help printer callback in benchmark::Initialize to
append the --benchmark_cooldown flag to the standard help text.

diff --git a/test/benchmarks/benchmark_main.cc b/test/benchmarks/benchmark_main.cc
index 90c949d96daf8b9d0e6babc172690cc9c6f510d7..191773527373ef9ac6410ae1784e056fe915a14e 100644 (file)
--- a/test/benchmarks/benchmark_main.cc
+++ b/test/benchmarks/benchmark_main.cc
@@ -82,7 +82,10 @@ int main(int argc, char** argv) {
         }
     }
 
-    ::benchmark::Initialize(&argc, argv);
+    ::benchmark::Initialize(&argc, argv, []() {
+        ::benchmark::PrintDefaultHelp();
+        printf("          [--benchmark_cooldown=<seconds>]\n");
+    });
 
     if (cooldown_secs > 0) {
         benchmark::BenchmarkReporter *display = benchmark::CreateDefaultDisplayReporter();