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-rw-r--r--pkgs/os-specific/linux/pktgen/default.nix2
1 files changed, 2 insertions, 0 deletions
diff --git a/pkgs/os-specific/linux/pktgen/default.nix b/pkgs/os-specific/linux/pktgen/default.nix
index 56ef935920b..456e9a4679c 100644
--- a/pkgs/os-specific/linux/pktgen/default.nix
+++ b/pkgs/os-specific/linux/pktgen/default.nix
@@ -16,6 +16,8 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  NIX_CFLAGS_COMPILE = [ "-march=core2" ];
+
   patchPhase = ''
     sed -i -e s:/usr/local:$out:g lib/lua/src/luaconf.h
     sed -i -e s:/usr/bin/lscpu:${utillinux}/bin/lscpu:g lib/common/wr_lscpu.h