nixpkgs/pkgs/development/libraries/liblinear/default.nix

{ stdenv, fetchurl, fixDarwinDylibNames }:

stdenv.mkDerivation rec {
  pname = "liblinear";
  version = "2.30";

  src = fetchurl {
    url = "https://www.csie.ntu.edu.tw/~cjlin/liblinear/liblinear-${version}.tar.gz";
    sha256 = "1b66jpg9fdwsq7r52fccr8z7nqcivrin5d8zg2f134ygqqwp0748";
  };

  buildPhase = ''
    make
    make lib
  '';

  installPhase = ''
    mkdir -p $out/lib $out/bin $out/include
    ${if stdenv.isDarwin then ''
      cp liblinear.so.3 $out/lib/liblinear.3.dylib
      ln -s $out/lib/liblinear.3.dylib $out/lib/liblinear.dylib
    '' else ''
      cp liblinear.so.3 $out/lib/liblinear.so.3
      ln -s $out/lib/liblinear.so.3 $out/lib/liblinear.so
    ''}
    cp train $out/bin/liblinear-train
    cp predict $out/bin/liblinear-predict
    cp linear.h $out/include
  '';

  nativeBuildInputs = stdenv.lib.optional stdenv.isDarwin [ fixDarwinDylibNames ];

  meta = with stdenv.lib; {
    description = "A library for large linear classification";
    homepage = "https://www.csie.ntu.edu.tw/~cjlin/liblinear/";
    license = licenses.bsd3;
    maintainers = [ maintainers.danieldk ];
    platforms = platforms.unix;
  };
}