From a231eabbe186e19bff77ac7dcb7cf00586df19be Mon Sep 17 00:00:00 2001
From: Orion Poplawski <orion@nwra.com>
Date: Mon, 22 Nov 2021 18:01:46 -0700
Subject: [PATCH] Try reducing parallel build ncpus on x86_64 due to possible
 build issue

---
 vtk.spec | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/vtk.spec b/vtk.spec
index f63b14a..05e7801 100644
--- a/vtk.spec
+++ b/vtk.spec
@@ -475,6 +475,10 @@ export JAVA_TOOL_OPTIONS=-Xmx2048m
 # Likely running out of memory during build
 %global _smp_ncpus_max 3
 %endif
+%ifarch x86_64
+# Parallel build issue https://gitlab.kitware.com/vtk/vtk/-/issues/18394
+%global _smp_ncpus_max 3
+%endif
 %endif
 
 %global vtk_cmake_options \\\