From e6ca3a37f13ab997bf66e3f00af01ee9851ba00e Mon Sep 17 00:00:00 2001
From: Ryan Burns <rtburns@protonmail.com>
Date: Sat, 30 Oct 2021 16:55:53 -0700
Subject: [PATCH] libselinux: fix cross-compilation from x86_32

libselinux incorrectly initializes the host platform's arch using uname -m,
which actually returns the build platform's arch. This results in an invalid
compile flag (-mno-tls-direct-seg-refs) when compiling from x86_32.
So we need to set the host arch variable explicitly.
---
 pkgs/os-specific/linux/libselinux/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/os-specific/linux/libselinux/default.nix b/pkgs/os-specific/linux/libselinux/default.nix
index fbf7e4bd995a..fcea787ed79c 100644
--- a/pkgs/os-specific/linux/libselinux/default.nix
+++ b/pkgs/os-specific/linux/libselinux/default.nix
@@ -39,6 +39,7 @@ stdenv.mkDerivation rec {
     "SHLIBDIR=$(out)/lib"
 
     "LIBSEPOLA=${lib.getLib libsepol}/lib/libsepol.a"
+    "ARCH=${stdenv.hostPlatform.linuxArch}"
   ] ++ optionals enablePython [
     "PYTHON=${python3.pythonForBuild.interpreter}"
     "PYTHONLIBDIR=$(py)/${python3.sitePackages}"