1 files changed, 29 insertions, 0 deletions
diff --git a/cad/PrusaSlicer/files/patch-src_libslic3r_Print.cpp b/cad/PrusaSlicer/files/patch-src_libslic3r_Print.cpp
new file mode 100644
index 000000000000..497cce5467a7
--- /dev/null
+++ b/cad/PrusaSlicer/files/patch-src_libslic3r_Print.cpp
@@ -0,0 +1,29 @@
+--- src/libslic3r/Print.cpp.orig	2021-07-16 10:14:03 UTC
++++ src/libslic3r/Print.cpp
+@@ -36,7 +36,7 @@ template class PrintState<PrintObjectStep, posCount>;
+ 
+ void Print::clear() 
+ {
+-	tbb::mutex::scoped_lock lock(this->state_mutex());
++	std::scoped_lock<std::mutex> lock(this->state_mutex());
+     // The following call should stop background processing if it is running.
+     this->invalidate_all_steps();
+ 	for (PrintObject *object : m_objects)
+@@ -262,7 +262,7 @@ bool Print::is_step_done(PrintObjectStep step) const
+ {
+     if (m_objects.empty())
+         return false;
+-    tbb::mutex::scoped_lock lock(this->state_mutex());
++    std::scoped_lock<std::mutex> lock(this->state_mutex());
+     for (const PrintObject *object : m_objects)
+         if (! object->is_step_done_unguarded(step))
+             return false;
+@@ -617,7 +617,7 @@ Print::ApplyStatus Print::apply(const Model &model, Dy
+         update_apply_status(false);
+ 
+     // Grab the lock for the Print / PrintObject milestones.
+-	tbb::mutex::scoped_lock lock(this->state_mutex());
++	std::scoped_lock<std::mutex> lock(this->state_mutex());
+ 
+     // The following call may stop the background processing.
+     if (! print_diff.empty())