From 8af1c4d03ddea0e654a96ca7e5c7cee0e1340547 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 24 Jul 2020 09:18:41 +0200
Subject: [PATCH] oneDNN: compile without -msse4.1

---
 pkgs/development/libraries/oneDNN/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/libraries/oneDNN/default.nix b/pkgs/development/libraries/oneDNN/default.nix
index c20a06fc6bc..80daf83de83 100644
--- a/pkgs/development/libraries/oneDNN/default.nix
+++ b/pkgs/development/libraries/oneDNN/default.nix
@@ -20,6 +20,12 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
+  cmakeFlags = [
+    # oneDNN compiles with -msse4.1 by default, but not all x86_64
+    # CPUs support SSE 4.1.
+    "-DDNNL_ARCH_OPT_FLAGS="
+  ];
+
   # The test driver doesn't add an RPath to the build libdir
   preCheck = ''
     export LD_LIBRARY_PATH=$LD_LIBRARY_PATH''${LD_LIBRARY_PATH:+:}$PWD/src