From d9be549a4c3523935437d6167a16c387e1c6d4ff Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Tue, 8 Oct 2013 13:17:55 +0200
Subject: [PATCH] libusb1: Fix "libgcc_s.so.1 must be installed for
 pthread_cancel to work" error

---
 pkgs/development/libraries/libusb1/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/libraries/libusb1/default.nix b/pkgs/development/libraries/libusb1/default.nix
index c01baa2fd0f6..d4504a26b7f3 100644
--- a/pkgs/development/libraries/libusb1/default.nix
+++ b/pkgs/development/libraries/libusb1/default.nix
@@ -11,6 +11,8 @@ stdenv.mkDerivation rec {
   buildInputs = [ pkgconfig ];
   propagatedBuildInputs = stdenv.lib.optional (stdenv.isLinux) udev;
 
+  NIX_LDFLAGS = "-lgcc_s";
+
   meta = {
     homepage = http://www.libusb.org;
     description = "User-space USB library";