nixpkgs-suyu/pkgs/development/libraries/adns/default.nix

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{ stdenv, fetchurl, version, versionHash, static }:
stdenv.mkDerivation
{
name = "adns-${version}";
meta =
{
homepage = "http://www.chiark.greenend.org.uk/~ian/adns/";
description = "Asynchronous DNS Resolver Library";
license = "LGPL-v2";
};
src = fetchurl
{
url = "ftp://ftp.chiark.greenend.org.uk/users/ian/adns/adns-${version}.tar.gz";
sha256 = "${versionHash}";
};
configureFlags = if static then "--disable-dynamic" else "--enable-dynamic";
CPPFLAGS = "-DNDEBUG";
CFLAGS = "-O3";
doCheck = 1;
# adns doesn't understand the automatic --disable-shared from the Cygwin stdenv.
cygwinConfigureEnableShared = true;
}