Index: head/math/vtk8/files/patch-Rendering_Qt_vtkQtStringToImage.cxx
===================================================================
--- head/math/vtk8/files/patch-Rendering_Qt_vtkQtStringToImage.cxx
+++ head/math/vtk8/files/patch-Rendering_Qt_vtkQtStringToImage.cxx
@@ -0,0 +1,10 @@
+--- Rendering/Qt/vtkQtStringToImage.cxx.orig	2020-06-05 04:36:21 UTC
++++ Rendering/Qt/vtkQtStringToImage.cxx
+@@ -31,6 +31,7 @@
+ #include <QFontMetrics>
+ #include <QImage>
+ #include <QPainter>
++#include <QPainterPath>
+ #include <QPixmap>
+ #include <QTextDocument>
+ #include <QTextStream>