Merge #12197: Log debug build status and warn when running benchmarks

34328b4 Use PACKAGE_NAME instead of hardcoding application name in log message (Wladimir J. van der Laan)
0c74e2e Log debug build status and warn when running benchmarks (Wladimir J. van der Laan)

Pull request description:

  Log whether the starting instance of bitcoin core is a debug or release build (--enable-debug).

  Also warn when running the benchmarks with a debug build, to prevent mistakes comparing debug to non-debug results.

Tree-SHA512: f612dcb7d0a8435016cff0df8aef4942144dfb88be8a00df45cc8830d2aba4b167f6d397b83f8f57d57685888babd04ba88d4dac5a202d3dbd91bcbea3708ef0

Author: laanwj

src/bench/bench.cpp

@@ -100,6 +100,9 @@ void benchmark::BenchRunner::RunAll(Printer& printer, uint64_t num_evals, double
     if (!std::ratio_less_equal<benchmark::clock::period, std::micro>::value) {
         std::cerr << "WARNING: Clock precision is worse than microsecond - benchmarks may be less accurate!\n";
     }
+#ifdef DEBUG
+    std::cerr << "WARNING: This is a debug build - may result in slower benchmarks.\n";
+#endif
 
     std::regex reFilter(filter);
     std::smatch baseMatch;

src/init.cpp

@@ -808,7 +808,13 @@ void InitLogging()
     fLogIPs = gArgs.GetBoolArg("-logips", DEFAULT_LOGIPS);
 
     LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
-    LogPrintf("Bitcoin version %s\n", FormatFullVersion());
+    std::string version_string = FormatFullVersion();
+#ifdef DEBUG
+    version_string += " (debug build)";
+#else
+    version_string += " (release build)";
+#endif
+    LogPrintf(PACKAGE_NAME " version %s\n", version_string);
 }
 
 namespace { // Variables internal to initialization process only