From 0bfc84b0aa40741e404e21677730b77ba85f0fb7 Mon Sep 17 00:00:00 2001
From: "Yury G. Kudryashov" <urkud.urkud@gmail.com>
Date: Sat, 23 Apr 2011 06:59:04 +0000
Subject: [PATCH] Cross-compile zlib for Windows

svn path=/nixpkgs/trunk/; revision=26928
---
 pkgs/development/libraries/zlib/default.nix | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/zlib/default.nix b/pkgs/development/libraries/zlib/default.nix
index a4a91960c0bc0d6..f1b8a006ecfd3a2 100644
--- a/pkgs/development/libraries/zlib/default.nix
+++ b/pkgs/development/libraries/zlib/default.nix
@@ -19,7 +19,15 @@ stdenv.mkDerivation (rec {
 
   crossAttrs = {
     dontStrip = if static then true else false;
-  };
+  } // (if stdenv.cross.libc == "msvcrt" then {
+    configurePhase=''
+      installFlags="BINARY_PATH=$out/bin INCLUDE_PATH=$out/include LIBRARY_PATH=$out/lib"
+    '';
+    makeFlags = [
+      "-f" "win32/Makefile.gcc"
+      "PREFIX=${stdenv.cross.config}-"
+    ] ++ (if static then [] else [ "SHARED_MODE=1" ]);
+  } else {});
 
   # zlib doesn't like the automatic --disable-shared from the Cygwin stdenv.
   cygwinConfigureEnableShared = true;