From ae3d56121f9b1ea7f51ad98f2ddfadfd323c3e14 Mon Sep 17 00:00:00 2001
From: Mircho Rodozov <mrodozov@cern.ch>
Date: Wed, 22 Apr 2020 17:54:44 +0200
Subject: [PATCH] fix for eigen on powerpc. see
 https://gitlab.com/libeigen/eigen/issues/1718

---
 eigen-altivec-fix.patch | 13 +++++++++++++
 eigen.spec              |  2 ++
 2 files changed, 15 insertions(+)
 create mode 100644 eigen-altivec-fix.patch

diff --git a/eigen-altivec-fix.patch b/eigen-altivec-fix.patch
new file mode 100644
index 00000000000..2d15e9f36cf
--- /dev/null
+++ b/eigen-altivec-fix.patch
@@ -0,0 +1,13 @@
+diff --git a/Eigen/src/Core/arch/AltiVec/PacketMath.h b/Eigen/src/Core/arch/AltiVec/PacketMath.h
+index 9464264..eda73ec 100755
+--- a/Eigen/src/Core/arch/AltiVec/PacketMath.h
++++ b/Eigen/src/Core/arch/AltiVec/PacketMath.h
+@@ -452,7 +452,7 @@ template<> EIGEN_STRONG_INLINE Packet4f pandnot<Packet4f>(const Packet4f& a, con
+ template<> EIGEN_STRONG_INLINE Packet4i pandnot<Packet4i>(const Packet4i& a, const Packet4i& b) { return vec_and(a, vec_nor(b, b)); }
+ 
+ template<> EIGEN_STRONG_INLINE Packet4f pselect(const Packet4f& mask, const Packet4f& a, const Packet4f& b) {
+-  return vec_sel(b, a, mask);
++  return vec_sel(b, a, reinterpret_cast<Packet4ui>(mask));
+ }
+ 
+ template<> EIGEN_STRONG_INLINE Packet4f pround<Packet4f>(const Packet4f& a) { return vec_round(a); }
diff --git a/eigen.spec b/eigen.spec
index 4eeafd9e266..231317c4bfa 100644
--- a/eigen.spec
+++ b/eigen.spec
@@ -11,9 +11,11 @@
 %define source_prefix eigen-git-mirror-%{tag}
 Source: %{source0}
 BuildRequires: cmake
+Patch0: eigen-altivec-fix
 
 %prep
 %setup -n %{source_prefix}
+%patch0 -p1
 
 %build
 mkdir build