Merge pull request #222401 from Artturin/newlibincr

{ stdenv, fetchurl, buildPackages

{ stdenv, fetchurl, buildPackages, lib, fetchpatch, texinfo

, # "newlib-nano" is what the official ARM embedded toolchain calls this build

  # configuration that prioritizes low space usage. We include it as a preset

  # for embedded projects striving for a similar configuration.

  nanoizeNewlib ? false

}:

stdenv.mkDerivation rec {

stdenv.mkDerivation (finalAttrs: {

  pname = "newlib";

  version = "4.1.0";

  version = "4.3.0.20230120";

  src = fetchurl {

    url = "ftp://sourceware.org/pub/newlib/newlib-${version}.tar.gz";

    sha256 = "0m01sjjyj0ib7bwlcrvmk1qkkgd66zf1dhbw716j490kymrf75pj";

    url = "ftp://sourceware.org/pub/newlib/newlib-${finalAttrs.version}.tar.gz";

    sha256 = "sha256-g6Yqma9Z4465sMWO0JLuJNcA//Q6IsA+QzlVET7zUVA=";

  };

  depsBuildBuild = [ buildPackages.stdenv.cc ];

  patches = lib.optionals nanoizeNewlib [

    # https://bugs.gentoo.org/723756

    (fetchpatch {

      name = "newlib-3.3.0-no-nano-cxx.patch";

      url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/sys-libs/newlib/files/newlib-3.3.0-no-nano-cxx.patch?id=9ee5a1cd6f8da6d084b93b3dbd2e8022a147cfbf";

      sha256 = "sha256-S3mf7vwrzSMWZIGE+d61UDH+/SK/ao1hTPee1sElgco=";

    })

  ];

  depsBuildBuild = [

    buildPackages.stdenv.cc

    texinfo # for makeinfo

  ];

  # newlib expects CC to build for build platform, not host platform

  preConfigure = ''

  '';

  configurePlatforms = [ "build" "target" ];

  # flags copied from https://community.arm.com/support-forums/f/compilers-and-libraries-forum/53310/gcc-arm-none-eabi-what-were-the-newlib-compilation-options

  # sort alphabetically

  configureFlags = [

    "--host=${stdenv.buildPlatform.config}"

  ] ++ (if !nanoizeNewlib then [

    "--disable-newlib-supplied-syscalls"

    "--disable-nls"

    "--enable-newlib-retargetable-locking"

  ] ++ (if !nanoizeNewlib then [

    "--enable-newlib-io-c99-formats"

    "--enable-newlib-io-long-long"

    "--enable-newlib-reent-check-verify"

    "--enable-newlib-register-fini"

    "--enable-newlib-retargetable-locking"

  ] else [

    "--enable-newlib-reent-small"

    "--disable-newlib-fvwrite-in-streamio"

    "--disable-newlib-fseek-optimization"

    "--disable-newlib-wide-orient"

    "--enable-newlib-nano-malloc"

    "--disable-newlib-fvwrite-in-streamio"

    "--disable-newlib-supplied-syscalls"

    "--disable-newlib-unbuf-stream-opt"

    "--disable-newlib-wide-orient"

    "--disable-nls"

    "--enable-lite-exit"

    "--enable-newlib-global-atexit"

    "--enable-newlib-nano-formatted-io"

    "--enable-newlib-nano-malloc"

    "--enable-newlib-reent-check-verify"

    "--enable-newlib-reent-small"

    "--enable-newlib-retargetable-locking"

  ]);

  dontDisableStatic = true;

  # apply necessary nano changes from https://developer.arm.com/-/media/Files/downloads/gnu/12.2.rel1/manifest/copy_nano_libraries.sh?rev=4c50be6ccb9c4205a5262a3925317073&hash=1375A7B0A1CD0DB9B9EB0D2B574ADF66

  postInstall = lib.optionalString nanoizeNewlib ''

    mkdir -p $out${finalAttrs.passthru.incdir}/newlib-nano

    cp $out${finalAttrs.passthru.incdir}/newlib.h $out${finalAttrs.passthru.incdir}/newlib-nano/

    (

      cd $out${finalAttrs.passthru.libdir}

      for f in librdimon.a libc.a libg.a; do

        cp "$f" "''${f%%\.a}_nano.a"

      done

    )

  '';

  passthru = {

    incdir = "/${stdenv.targetPlatform.config}/include";

    libdir = "/${stdenv.targetPlatform.config}/lib";

  };

}

  meta = with lib; {

    description = "a C library intended for use on embedded systems";

    homepage = "https://sourceware.org/newlib/";

    # arch has "bsd" while gentoo has "NEWLIB LIBGLOSS GPL-2" while COPYING has "gpl2"

    # there are 5 copying files in total

    # COPYING

    # COPYING.LIB

    # COPYING.LIBGLOSS

    # COPYING.NEWLIB

    # COPYING3

    license = licenses.gpl2Plus;

  };

})