{ stdenv, fetchurl }:

let version = "4.11"; in

stdenv.mkDerivation {
  name = "nspr-${version}";

  src = fetchurl {
    url = "http://ftp.mozilla.org/pub/mozilla.org/nspr/releases/v${version}/src/nspr-${version}.tar.gz";
    sha256 = "cb320a9eee7028275ac0fce7adc39dee36f14f02fd8432fce1b7e1aa5e3685c2";
  };

  preConfigure = ''
    cd nspr
  '';

  configureFlags = [
    "--enable-optimize"
    "--disable-debug"
  ] ++ stdenv.lib.optional stdenv.is64bit "--enable-64bit";

  postInstall = ''
    find $out -name "*.a" -delete
  '';

  enableParallelBuilding = true;

  meta = {
    homepage = http://www.mozilla.org/projects/nspr/;
    description = "Netscape Portable Runtime, a platform-neutral API for system-level and libc-like functions";
    platforms = stdenv.lib.platforms.all;
  };
}