From 79987057c4bb8364941e1ed9a95f2b5724bb9c83 Mon Sep 17 00:00:00 2001
From: Joe Hermaszewski <git@monoid.al>
Date: Thu, 18 Jun 2020 17:27:27 +0800
Subject: [PATCH] exfat: fix cross compilation

---
 pkgs/os-specific/linux/exfat/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/os-specific/linux/exfat/default.nix b/pkgs/os-specific/linux/exfat/default.nix
index e66ac4d65ab..59f9c709e5f 100644
--- a/pkgs/os-specific/linux/exfat/default.nix
+++ b/pkgs/os-specific/linux/exfat/default.nix
@@ -21,6 +21,9 @@ stdenv.mkDerivation rec {
 
   makeFlags = [
     "KDIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
+    "ARCH=${stdenv.hostPlatform.platform.kernelArch}"
+  ] ++ stdenv.lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) [
+    "CROSS_COMPILE=${stdenv.cc.targetPrefix}"
   ];
 
   installPhase = ''