From b94711cb6ed8c0ce6082e9ad6db652e03871a629 Mon Sep 17 00:00:00 2001
From: Andrew D Smith <andrewds@usc.edu>
Date: Mon, 17 Aug 2026 18:29:58 -0700
Subject: [PATCH] src/falco_utils.hpp: if __APPLE__ is defined, the
 std:chrono::hh_mm_ss is not used and each part of the time output is
 calculated separately. This is to avoid using additional libraries which even
 gcc seems to need when formatting time on macos

---
 src/falco_utils.hpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/falco_utils.hpp b/src/falco_utils.hpp
index 85b60fe..7888847 100644
--- a/src/falco_utils.hpp
+++ b/src/falco_utils.hpp
@@ -128,7 +128,17 @@ get_run_duration(const auto start_time) {
       std::chrono::duration_cast<std::chrono::duration<double>>(d - dm);
     return std::format("{}:{:05.2f}", dm.count(), ds.count());
   }
+#if defined(__APPLE__)
+  using std::chrono::floor;
+  const auto hrs = floor<std::chrono::hours>(d_ms);
+  const auto mins = floor<std::chrono::minutes>(d_ms - hrs);
+  const auto secs = floor<std::chrono::seconds>(d_ms - hrs - mins);
+  const auto milli = floor<std::chrono::milliseconds>(d_ms - hrs - mins - secs);
+  return std::format("{:02}:{:02}:{:02}.{:03}", hrs.count(), mins.count(),
+                     secs.count(), milli.count());
+#else
   return std::format("{}", std::chrono::hh_mm_ss{d_ms});
+#endif
 }
 
 inline constexpr auto end_module_tag = ">>END_MODULE\n";