Fix mingw builds (?)

[simgrid.git] / include / simgrid / s4u / Mutex.hpp

diff --git a/include/simgrid/s4u/Mutex.hpp b/include/simgrid/s4u/Mutex.hpp
index f9cd035..d52df2d 100644 (file)
--- a/include/simgrid/s4u/Mutex.hpp
+++ b/include/simgrid/s4u/Mutex.hpp
@@ -35,8 +35,8 @@ class XBT_PUBLIC Mutex {
   explicit Mutex(simgrid::kernel::activity::MutexImpl * mutex) : mutex_(mutex) {}
 
   /* refcounting */
-  friend void intrusive_ptr_add_ref(Mutex* mutex);
-  friend void intrusive_ptr_release(Mutex* mutex);
+  friend XBT_PUBLIC void intrusive_ptr_add_ref(Mutex* mutex);
+  friend XBT_PUBLIC void intrusive_ptr_release(Mutex* mutex);
 
 public:
   using Ptr = boost::intrusive_ptr<Mutex>;