From 20648fc2cc7bcf0512f422bb6b481ed9941b4a18 Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Wed, 23 Feb 2022 22:58:34 -0500
Subject: [PATCH] icoutils: fix build on aarch64-darwin

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

diff --git a/pkgs/tools/graphics/icoutils/default.nix b/pkgs/tools/graphics/icoutils/default.nix
index 62b4ab6b303e..07f605a4cbff 100644
--- a/pkgs/tools/graphics/icoutils/default.nix
+++ b/pkgs/tools/graphics/icoutils/default.nix
@@ -13,6 +13,10 @@ stdenv.mkDerivation rec {
   buildInputs = [ libpng perl ];
   propagatedBuildInputs = [ perlPackages.LWP ];
 
+  # Fixes a build failure on aarch64-darwin. Define for all Darwin targets for when x86_64-darwin
+  # upgrades to a newer SDK.
+  NIX_CFLAGS_COMPILE = lib.optional stdenv.isDarwin "-DTARGET_OS_IPHONE=0";
+
   patchPhase = ''
     patchShebangs extresso/extresso
     patchShebangs extresso/extresso.in