libgpiod_1: restore 1.6.4 version

From 2cc80dc06ea42087788cf27b31821ffa99a22f89 Mon Sep 17 00:00:00 2001

From: Johannes Lode <johannes.lode@dynainstruments.com>

Date: Thu, 14 Nov 2019 10:44:00 +0100

Subject: [PATCH] Drop AC_FUNC_MALLOC and _REALLOC and check for them as

 regular functions.

While cross-compiling there occurred "undefined reference to

`rpl_malloc'", the suggested change fixes the problem.

Tested for native X86_64 and armv7a-unknown-linux-gnueabihf.

---

 configure.ac | 3 ++-

 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac

index 008499d..b492dc4 100644

--- a/configure.ac

+++ b/configure.ac

@@ -81,7 +81,8 @@ AC_DEFUN([HEADER_NOT_FOUND_CXX],

 # This is always checked (library needs this)

 AC_HEADER_STDC

-AC_FUNC_MALLOC

+# AC_FUNC_MALLOC -- does not work while cross-compiling

+AC_CHECK_FUNC([malloc realloc])

 AC_CHECK_FUNC([ioctl], [], [FUNC_NOT_FOUND_LIB([ioctl])])

 AC_CHECK_FUNC([asprintf], [], [FUNC_NOT_FOUND_LIB([asprintf])])

 AC_CHECK_FUNC([scandir], [], [FUNC_NOT_FOUND_LIB([scandir])])

-- 

2.25.1

{ lib, stdenv, fetchurl, autoreconfHook, autoconf-archive, pkg-config, kmod

, enable-tools ? true

, enablePython ? false, python3, ncurses }:

stdenv.mkDerivation rec {

  pname = "libgpiod";

  version = "1.6.4";

  src = fetchurl {

    url = "https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/snapshot/libgpiod-${version}.tar.gz";

    sha256 = "sha256-gp1KwmjfB4U2CdZ8/H9HbpqnNssqaKYwvpno+tGXvgo=";

  };

  patches = [

    # cross compiling fix

    # https://github.com/brgl/libgpiod/pull/45

    ./0001-Drop-AC_FUNC_MALLOC-and-_REALLOC-and-check-for-them-.patch

  ];

  buildInputs = [ kmod ] ++ lib.optionals enablePython [ python3 ncurses ];

  nativeBuildInputs = [

    autoconf-archive

    pkg-config

    autoreconfHook

  ];

  configureFlags = [

    "--enable-tools=${if enable-tools then "yes" else "no"}"

    "--enable-bindings-cxx"

    "--prefix=${placeholder "out"}"

  ] ++ lib.optional enablePython "--enable-bindings-python";

  meta = with lib; {

    description = "C library and tools for interacting with the linux GPIO character device";

    longDescription = ''

      Since linux 4.8 the GPIO sysfs interface is deprecated. User space should use

      the character device instead. This library encapsulates the ioctl calls and

      data structures behind a straightforward API.

    '';

    homepage = "https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about/";

    license = licenses.lgpl2;

    maintainers = [ maintainers.expipiplus1 ];

    platforms = platforms.linux;

  };

}