{ stdenv, fetchurl, libebml }: stdenv.mkDerivation rec { name = "libmatroska-1.4.1"; src = fetchurl { url = "http://dl.matroska.org/downloads/libmatroska/${name}.tar.bz2"; sha256 = "1dzglkl0hpimld1kahkrrp857hw5pg1r7xxbpnx7jmlj7s3j2vq8"; }; configurePhase = "cd make/linux"; makeFlags = "prefix=$(out) LIBEBML_INCLUDE_DIR=${libebml}/include LIBEBML_LIB_DIR=${libebml}/lib" + stdenv.lib.optionalString stdenv.isDarwin " CXX=clang++"; propagatedBuildInputs = [ libebml ]; meta = with stdenv.lib; { description = "A library to parse Matroska files"; homepage = http://matroska.org/; license = licenses.lgpl21; maintainers = [ maintainers.spwhitt ]; platforms = platforms.unix; }; }