{ stdenv, fetchurl, zlib }: assert !(stdenv ? cross) -> zlib != null; stdenv.mkDerivation rec { name = "libpng-1.2.53"; src = fetchurl { url = "mirror://sourceforge/libpng/${name}.tar.xz"; sha256 = "02jwfqk1ahqfvbs9gdyb5v0123by9ws6m7jnfvainig7i7v4jpml"; }; outputs = [ "dev" "out" "man" ]; propagatedBuildInputs = [ zlib ]; passthru = { inherit zlib; }; crossAttrs = stdenv.lib.optionalAttrs (stdenv.cross.libc == "libSystem") { propagatedBuildInputs = []; passthru = {}; }; configureFlags = "--enable-static"; postInstall = ''mv "$out/bin" "$dev/bin"''; meta = { description = "The official reference implementation for the PNG file format"; homepage = http://www.libpng.org/pub/png/libpng.html; license = stdenv.lib.licenses.libpng; maintainers = with stdenv.lib.maintainers; [ fuuzetsu ]; branch = "1.2"; }; }