update to new API

julia/src/MXNet.jl

@@ -139,7 +139,7 @@ export to_graphviz
 
 include("base.jl")
 
-include("mxfeatures.jl")
+include("runtime.jl")
 include("context.jl")
 include("util.jl")
 

julia/src/runtime.jl

@@ -0,0 +1,53 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# License); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# AS IS BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+
+# runtime detection of compile time features in the native library
+
+module MXRuntime
+
+using ..mx
+
+export LibFeature
+export libinfo_features
+
+# defined in include/mxnet/c_api.h
+struct LibFeature
+  name::Ptr{Cchar}
+  index::UInt32
+  enabled::Bool
+end
+
+Base.show(io::IO, x::LibFeature) =
+  print(io, ifelse(x.enabled, "✔", "✖"), "\t", unsafe_string(x.name))
+
+"""
+    libinfo_features()
+
+Check the library for compile-time features.
+The list of features are maintained in libinfo.h and libinfo.cc
+"""
+function libinfo_features()
+  ref = Ref{Ptr{mx.MXRuntime.LibFeature}}(C_NULL)
+  s = Ref{Csize_t}(C_NULL)
+  mx.@mxcall(:MXLibInfoFeatures, (Ref{Ptr{mx.MXRuntime.LibFeature}}, Ref{Csize_t}), ref, s)
+  unsafe_wrap(Array, ref[], s[])
+end
+
+end  # module MXRuntime
+
+using .MXRuntime