From 46c2e619e856ad679ae41005e8ba2a9dac39ff77 Mon Sep 17 00:00:00 2001
From: Ben Gamari <ben@smart-cactus.org>
Date: Sun, 15 Oct 2017 13:04:42 -0400
Subject: [PATCH] linux-pam: Add necessary build dependencies for
 cross-compilation

Ensure that we use the correct `ar` and add explicit dependency on the build CC.

(cherry picked from commit 5efb768011f6bce870f4ce814295a399d5a89c10)
---
 pkgs/os-specific/linux/pam/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/os-specific/linux/pam/default.nix b/pkgs/os-specific/linux/pam/default.nix
index 3de7916bff6..fc2a7ea61d2 100644
--- a/pkgs/os-specific/linux/pam/default.nix
+++ b/pkgs/os-specific/linux/pam/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, flex, cracklib }:
+{ stdenv, buildPackages, fetchurl, flex, cracklib }:
 
 stdenv.mkDerivation rec {
   name = "linux-pam-${version}";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "doc" "man" /* "modules" */ ];
 
-  nativeBuildInputs = [ flex ];
+  nativeBuildInputs = [ buildPackages.stdenv.cc flex ];
 
   buildInputs = [ cracklib ];
 
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   crossAttrs = {
     propagatedBuildInputs = [ flex.crossDrv cracklib.crossDrv ];
     preConfigure = preConfigure + ''
-      ar x ${flex.crossDrv}/lib/libfl.a
+      $crossConfig-ar x ${flex.crossDrv}/lib/libfl.a
       mv libyywrap.o libyywrap-target.o
       ar x ${flex}/lib/libfl.a
       mv libyywrap.o libyywrap-host.o