Added the dlib machine learning library.

pkgs/development/libraries/dlib/default.nix

@@ -0,0 +1,45 @@
+{ stdenv, fetchurl, cmake, x11 }:
+
+stdenv.mkDerivation rec {
+  version = "18.10";
+  name = "dlib-${version}";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/dclib/dlib/${name}.tar.bz2";
+    sha256 = "1g3v13azc29m5r7zqs3x0g731hny6spb66cxnra7f167z31ka3s7";
+  };
+
+  # The supplied CMakeLists.txt does not have any install targets.
+  sources_var = "\$\{sources\}";
+  headers_var = "\$\{hearders\}";
+  preConfigure = ''
+    cat << EOF > CMakeLists.txt
+    cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
+    project(dlib)
+
+    include_directories(./)
+
+    file(GLOB sources ./dlib/all/*.cpp)
+    file(GLOB headers ./dlib/*.h)
+
+    SET(LIBRARY_OUTPUT_PATH ".")
+    add_library(dlib "SHARED" dlib/all/source.cpp ${sources_var} ${headers_var})
+
+    install(TARGETS dlib DESTINATION lib)
+    install(DIRECTORY dlib/ DESTINATION include/dlib FILES_MATCHING PATTERN "*.h")
+    EOF
+  '';   
+
+  enableParallelBuilding = true;
+  buildInputs = [ cmake x11 ];
+  propagatedBuildInputs = [ x11 ];
+
+  meta = {
+    description = "Dlib is a general purpose cross-platform C++ machine learning library.";
+    homepage = http://www.dlib.net;
+    license = stdenv.lib.licenses.boost;
+    maintainers = [ ];
+    platforms = stdenv.lib.platforms.all;
+  };
+}
+

pkgs/top-level/all-packages.nix

@@ -4806,6 +4806,8 @@ let
 
   directfb = callPackage ../development/libraries/directfb { };
 
+  dlib = callPackage ../development/libraries/dlib { };
+
   dotconf = callPackage ../development/libraries/dotconf { };
 
   dssi = callPackage ../development/libraries/dssi {};