From b26e0bac8dab068e54b0c8ee1bf8fd5fe5683b39 Mon Sep 17 00:00:00 2001
From: Andrew Childs <lorne@cons.org.nz>
Date: Thu, 19 Nov 2020 16:57:41 +0900
Subject: [PATCH] bintools-wrapper: set -arch on darwin

---
 pkgs/build-support/bintools-wrapper/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/build-support/bintools-wrapper/default.nix b/pkgs/build-support/bintools-wrapper/default.nix
index 8fef2ca6624c..c255f43dfcd8 100644
--- a/pkgs/build-support/bintools-wrapper/default.nix
+++ b/pkgs/build-support/bintools-wrapper/default.nix
@@ -305,6 +305,10 @@ stdenv.mkDerivation {
       done
     ''
 
+    + optionalString stdenv.targetPlatform.isDarwin ''
+      echo "-arch ${targetPlatform.darwinArch}" >> $out/nix-support/libc-ldflags
+    ''
+
     + ''
       for flags in "$out/nix-support"/*flags*; do
         substituteInPlace "$flags" --replace $'\n' ' '