libsvm: New package

pkgs/development/libraries/libsvm/default.nix

···
+{stdenv, fetchurl}:
+
+stdenv.mkDerivation rec {
+  name = "libsvm-${version}";
+  version = "3.20";
+
+  src = fetchurl {
+    url = "http://www.csie.ntu.edu.tw/~cjlin/libsvm/libsvm-${version}.tar.gz";
+    sha256 = "1gj5v5zp1qnsnv0iwxq0ikhf8262d3s5dq6syr6yqkglps0284hg";
+  };
+
+  buildPhase = ''
+  make
+  make lib
+  '';
+
+  installPhase = let
+    libSuff = if stdenv.isDarwin then "dylib" else "so";
+  in ''
+    mkdir -p $out/lib $out/bin $out/include;
+    cp libsvm.so.2 $out/lib/libsvm.2.${libSuff};
+    ln -s $out/lib/libsvm.2.${libSuff} $out/lib/libsvm.${libSuff};
+    cp svm-scale svm-train svm-predict $out/bin;
+    cp svm.h $out/include;
+  '';
+
+  postFixup = stdenv.lib.optionalString stdenv.isDarwin ''
+    install_name_tool -id libsvm.2.dylib $out/lib/libsvm.2.dylib;
+  '';
+
+  meta = with stdenv.lib; {
+    description = "A library for support vector machines";
+    homepage = "http://www.csie.ntu.edu.tw/~cjlin/libsvm/";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.spwhitt ];
+    platforms = platforms.unix;
+  };
+}

pkgs/top-level/all-packages.nix

···
 
   libstatgrab = callPackage ../development/libraries/libstatgrab { };
 
+  libsvm = callPackage ../development/libraries/libsvm { };
+
   libtar = callPackage ../development/libraries/libtar { };
 
   libtasn1 = callPackage ../development/libraries/libtasn1 { };