From d1f7bc7bcfd2a0a48d22c98c5c626231291c5ea4 Mon Sep 17 00:00:00 2001
From: Andreas Herrmann <andreash87@gmx.ch>
Date: Sun, 15 Jun 2014 13:26:44 +0200
Subject: [PATCH] hdf5: Add szip as an optional dependency

This adds additional compression modes to hdf5.

Note: The szip license may not be compatible with everyone's use case. Hence,
it is an optional dependency.
---
 pkgs/tools/misc/hdf5/default.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/misc/hdf5/default.nix b/pkgs/tools/misc/hdf5/default.nix
index 8b1f8a3b964..1f5fb78d100 100644
--- a/pkgs/tools/misc/hdf5/default.nix
+++ b/pkgs/tools/misc/hdf5/default.nix
@@ -2,6 +2,7 @@
 { stdenv
 , fetchurl
 , zlib ? null
+, szip ? null
 }:
 stdenv.mkDerivation {
   name = "hdf5-1.8.10-patch1";
@@ -11,7 +12,10 @@ stdenv.mkDerivation {
   };
 
   buildInputs = []
-    ++ stdenv.lib.optional (zlib != null) zlib;
+    ++ stdenv.lib.optional (zlib != null) zlib
+    ++ stdenv.lib.optional (szip != null) szip;
+
+  configureFlags = if szip != null then "--with-szlib=${szip}" else "";
   
   patches = [./bin-mv.patch];