From a3837fb8e080c2e545c7a0df94d47f553240f463 Mon Sep 17 00:00:00 2001
From: Sandro Mani <manisandro@gmail.com>
Date: Wed, 11 Nov 2020 11:07:19 +0100
Subject: [PATCH] Disable LTO

---
 vtk.spec | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/vtk.spec b/vtk.spec
index e95127b..d667f8a 100644
--- a/vtk.spec
+++ b/vtk.spec
@@ -1,5 +1,10 @@
 %undefine __cmake_in_source_build
 
+# State Nov 11 2020, LTO causes
+# TestXMLHyperTreeGridIO.cxx.o (symbol from plugin): undefined reference to symbol
+# '_ZZNSt8__detail18__to_chars_10_implIjEEvPcjT_E8__digits@@LLVM_11'
+%global _lto_cflags %{nil}
+
 # Disable OSMesa builds for now - see Bug 744434
 %bcond_without OSMesa
 %bcond_without java