depot/third_party/nixpkgs/pkgs/development/compilers/dtc/default.nix

{ stdenv
, lib
, fetchzip
, meson
, ninja
, flex
, bison
, pkg-config
, which
, pythonSupport ? false
, python ? null
, swig
, libyaml
}:

stdenv.mkDerivation (finalAttrs: {
  pname = "dtc";
  version = "1.7.1";

  src = fetchzip {
    url = "https://git.kernel.org/pub/scm/utils/dtc/dtc.git/snapshot/dtc-v${finalAttrs.version}.tar.gz";
    hash = "sha256-Zl2bOGDJIe/bhMFNsy969JYCYqtXTOzgb+bbOlKqOco=";
  };

  env.SETUPTOOLS_SCM_PRETEND_VERSION = finalAttrs.version;

  nativeBuildInputs = [
    meson
    ninja
    flex
    bison
    pkg-config
    which
  ] ++ lib.optionals pythonSupport [
    python
    python.pkgs.setuptools-scm
    swig
  ];

  buildInputs = [ libyaml ];

  postPatch = ''
    patchShebangs setup.py
  '';

  # Required for installation of Python library and is innocuous otherwise.
  env.DESTDIR = "/";

  mesonAutoFeatures = "auto";
  mesonFlags = [
    (lib.mesonBool "static-build" stdenv.hostPlatform.isStatic)
    (lib.mesonBool "tests" finalAttrs.finalPackage.doCheck)
  ];

  doCheck =
    # Checks are broken on aarch64 darwin
    # https://github.com/NixOS/nixpkgs/pull/118700#issuecomment-885892436
    !stdenv.hostPlatform.isDarwin &&
    # Checks are broken when building statically on x86_64 linux with musl
    # One of the test tries to build a shared library and this causes the linker:
    # x86_64-unknown-linux-musl-ld: /nix/store/h9gcvnp90mpniyx2v0d0p3s06hkx1v2p-x86_64-unknown-linux-musl-gcc-13.3.0/lib/gcc/x86_64-unknown-linux-musl/13.3.0/crtbeginT.o: relocation R_X86_64_32 against hidden symbol `__TMC_END__' can not be used when making a shared object
    # x86_64-unknown-linux-musl-ld: failed to set dynamic section sizes: bad value
    !stdenv.hostPlatform.isStatic &&

    # we must explicitly disable this here so that mesonFlags receives
    # `-Dtests=disabled`; without it meson will attempt to run
    # hostPlatform binaries during the configurePhase.
    (with stdenv; buildPlatform.canExecute hostPlatform);

  meta = with lib; {
    description = "Device Tree Compiler";
    homepage = "https://git.kernel.org/pub/scm/utils/dtc/dtc.git";
    license = licenses.gpl2Plus; # dtc itself is GPLv2, libfdt is dual GPL/BSD
    maintainers = [ maintainers.dezgeg ];
    platforms = platforms.unix;
    mainProgram = "dtc";
  };
})