From a510d1748416ff29b1ed3cab92ac0ad943b6e590 Mon Sep 17 00:00:00 2001
From: Jade Lovelace <lix@jade.fyi>
Date: Fri, 23 Aug 2024 16:57:26 -0700
Subject: build-time: hide boost stacktrace in a .cc file

Saves about 16s of CPU time. Not a lot but not nothing. Feels more like
the principle of the thing.

Change-Id: I0992d4024317c20d6985a7977d5649edfb9f46bb
---
 src/libutil/fmt.cc | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/libutil/fmt.cc')

diff --git a/src/libutil/fmt.cc b/src/libutil/fmt.cc
index 400fb7ea0..bff5af020 100644
--- a/src/libutil/fmt.cc
+++ b/src/libutil/fmt.cc
@@ -1,4 +1,9 @@
 #include "fmt.hh" // IWYU pragma: keep
+// Darwin and FreeBSD stdenv do not define _GNU_SOURCE but do have _Unwind_Backtrace.
+#if __APPLE__ || __FreeBSD__
+#define BOOST_STACKTRACE_GNU_SOURCE_NOT_REQUIRED
+#endif
+#include <boost/stacktrace/stacktrace.hpp>
 
 template class boost::basic_format<char>;
 
@@ -11,4 +16,9 @@ template HintFmt::HintFmt(const std::string &, const uint64_t &, const char * co
 
 HintFmt::HintFmt(const std::string & literal) : HintFmt("%s", Uncolored(literal)) {}
 
+void printStackTrace()
+{
+    std::cerr << boost::stacktrace::stacktrace() << std::endl;
+}
+
 }
-- 
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