Zbar: nix expression for linux->mingw cross-compilation, both 32 and 64-bit.

zbar.nix

{stdenv, fetchurl, pkgconfig, xmlto, imagemagick, libiconv}:

stdenv.mkDerivation rec {
  name = "zbar-0-10";

  src = fetchurl {
    url = http://downloads.sourceforge.net/project/zbar/zbar/0.10/zbar-0.10.tar.bz2;
    sha256 = "1imdvf5k34g1x2zr6975basczkz3zdxg6xnci50yyp5yvcwznki3";
  };

  nativeBuildInputs = [pkgconfig];
  buildInputs = [imagemagick libiconv];

  configureFlags = [
    "--disable-video"
    "--without-gtk"
    "--without-qt"
    "--without-x"
    "--without-python"
    #"--without-imagemagick"
    "--enable-pthread=no"
    "--enable-shared=no"
    #"CFLAGS=-DNDEBUG"
  ]
    ++ stdenv.lib.optional (stdenv.cross.libc or null == "msvcrt") "--without-jpeg"
    ;

  #doCheck = true;

  meta = {
    homepage = http://zbar.sourceforge.net/;
    description = "ZBar bar code reader";
    #license = stdenv.lib.licenses.lgpl2-1;
  };
}