From 489f2cf089321e8ccc6eeb342bfd2a2e2a12b0dd Mon Sep 17 00:00:00 2001
From: Nick Cao <nickcao@nichi.co>
Date: Mon, 12 Dec 2022 14:35:01 +0800
Subject: [PATCH] bgpdump: fix cross compilation

---
 pkgs/tools/networking/bgpdump/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/tools/networking/bgpdump/default.nix b/pkgs/tools/networking/bgpdump/default.nix
index f60b60c3992..5e98228da2e 100644
--- a/pkgs/tools/networking/bgpdump/default.nix
+++ b/pkgs/tools/networking/bgpdump/default.nix
@@ -11,6 +11,10 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-1HXMf9mHManR7jhonU2Agon0YFXOlM9APIN1Zm840AM=";
   };
 
+  postPatch = ''
+    substituteInPlace Makefile.in --replace 'ar r libbgpdump.a' '$(AR) r libbgpdump.a'
+  '';
+
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ zlib bzip2 ];