FreeBSD-ports/math/lean4/files/patch-src_runtime_stack__overflow.cpp

--- src/runtime/stack_overflow.cpp.orig	2025-05-06 09:12:17 UTC
+++ src/runtime/stack_overflow.cpp
@@ -21,6 +21,9 @@ Port of the corresponding Rust code (see links below).
 #include <initializer_list>
 #include "runtime/stack_overflow.h"
 
+#include <pthread_np.h>
+#define pthread_getattr_np pthread_attr_get_np
+
 namespace lean {
 // stack guard of the main thread
 static stack_guard * g_stack_guard;