From e45745f1f40efd1a510928c043530ab1c215762d Mon Sep 17 00:00:00 2001
From: Marko Durkovic <marko@miding.de>
Date: Thu, 23 Oct 2014 22:46:09 +0200
Subject: [PATCH] cygwin: libatomic_ops: add missing interlibrary dep

---
 .../libraries/libatomic_ops/default.nix         | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/pkgs/development/libraries/libatomic_ops/default.nix b/pkgs/development/libraries/libatomic_ops/default.nix
index 35ffe6d5fa59..cf74ed3b5f65 100644
--- a/pkgs/development/libraries/libatomic_ops/default.nix
+++ b/pkgs/development/libraries/libatomic_ops/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl}:
+{ stdenv, fetchurl, autoconf, automake, libtool }:
 let
   s = # Generated upstream information
   rec {
@@ -9,15 +9,22 @@ let
     url="http://www.ivmaisoft.com/_bin/atomic_ops/libatomic_ops-7.4.2.tar.gz";
     sha256="1pdm0h1y7bgkczr8byg20r6bq15m5072cqm5pny4f9crc9gn3yh4";
   };
-  buildInputs = [
-  ];
-in
-stdenv.mkDerivation {
+  
+  buildInputs = stdenv.lib.optionals stdenv.isCygwin [ autoconf automake libtool ];
+
+in stdenv.mkDerivation {
   inherit (s) name version;
   inherit buildInputs;
+
   src = fetchurl {
     inherit (s) url sha256;
   };
+
+  preConfigure = if stdenv.isCygwin then ''
+      sed -i -e "/libatomic_ops_gpl_la_SOURCES/a libatomic_ops_gpl_la_LIBADD = libatomic_ops.la" src/Makefile.am
+      ./autogen.sh
+  '' else null;
+
   meta = {
     inherit (s) version;
     description = ''A library for semi-portable access to hardware-provided atomic memory update operations'';