diff --git a/modules/calib3d/src/five-point.cpp b/modules/calib3d/src/five-point.cpp
index b8d0b43edc..9fda9f73f1 100644
--- a/modules/calib3d/src/five-point.cpp
+++ b/modules/calib3d/src/five-point.cpp
@@ -36,6 +36,13 @@
 namespace cv
 {
 
+// for some compilers it takes very long time to compile
+// automatically generated code in EMEstimatorCallback::runKernel(),
+// so we temporarily disable optimizations here
+#if defined __hexagon__ && defined __clang__
+#pragma clang optimize off
+#endif
+
 class EMEstimatorCallback CV_FINAL : public PointSetRegistrator::Callback
 {
 public:
@@ -401,6 +408,11 @@ protected:
     }
 };
 
+// restore optimizations (if any)
+#if defined __hexagon__ && defined __clang__
+#pragma clang optimize on
+#endif
+
 // Find essential matrix given undistorted points and two cameras.
 static Mat findEssentialMat_( InputArray _points1, InputArray _points2,
                              InputArray cameraMatrix1, InputArray cameraMatrix2,