1 files changed, 10 insertions, 0 deletions
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;
+}
+
 }