{ lib, stdenv, fetchFromGitHub, autoreconfHook, }: stdenv.mkDerivation (finalAttrs: { pname = "libmodbus"; version = "3.2.0"; src = fetchFromGitHub { owner = "stephane"; repo = "libmodbus"; rev = "v${finalAttrs.version}"; hash = "sha256-eGbgQpXBHxVnXRQKzzF2zfSVlaQNTu1CwrU0ZxaqA3Y="; }; nativeBuildInputs = [ autoreconfHook ]; configureFlags = [ # when cross-compiling we assume that the host system will return a valid # pointer for calls to malloc(0) or realloc(0) # https://www.uclibc.org/FAQ.html#gnu_malloc # https://www.gnu.org/software/autoconf/manual/autoconf.html#index-AC_005fFUNC_005fMALLOC-454 # the upstream source should be patched to avoid needing this "ac_cv_func_malloc_0_nonnull=yes" "ac_cv_func_realloc_0_nonnull=yes" ]; meta = { description = "Library to send/receive data according to the Modbus protocol"; homepage = "https://libmodbus.org/"; license = lib.licenses.lgpl21Plus; platforms = with lib.platforms; unix ++ windows; maintainers = [ lib.maintainers.bjornfor ]; }; })