From a2ab758457c4433d91ef98177f1a5f2e9b3b1cd2 Mon Sep 17 00:00:00 2001
From: Franz Pletz <fpletz@fnordicwalking.de>
Date: Tue, 5 Nov 2019 01:55:18 +0100
Subject: [PATCH] dpdk: fix build with gcc9

---
 pkgs/os-specific/linux/dpdk/default.nix | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkgs/os-specific/linux/dpdk/default.nix b/pkgs/os-specific/linux/dpdk/default.nix
index 9a74b0bb4a8..0c7e2566f00 100644
--- a/pkgs/os-specific/linux/dpdk/default.nix
+++ b/pkgs/os-specific/linux/dpdk/default.nix
@@ -21,8 +21,12 @@ in stdenv.mkDerivation rec {
   RTE_KERNELDIR = if mod then "${kernel.dev}/lib/modules/${kver}/build" else "/var/empty";
   RTE_TARGET = "x86_64-native-linuxapp-gcc";
 
-  # we need sse3 instructions to build
-  NIX_CFLAGS_COMPILE = [ "-msse3" ];
+  NIX_CFLAGS_COMPILE = [
+    # we need sse3 instructions to build
+    "-msse3"
+    # gcc9 compatibility
+    "-Wno-error=address-of-packed-member"
+  ];
   hardeningDisable = [ "pic" ];
 
   postPatch = ''