TensorflowPod

Build Tensorflow for iOS on macOS

[Prerequisite] Install xcode cli tools
```
$ xcode-select --install
```
[Prerequisite] Install automake and libtool
```
$ brew install automake libtool
```
[Prerequisite] Install gnu-tar
```
$ brew install gnu-tar
```

Clone TensorFlow repository

$ cd ~/Code
$ git clone https://github.com/tensorflow/tensorflow/

Clone TensorflowPod repository

$ cd ~/Code
$ git clone https://github.com/lazToum/TensorflowPod

Compile TensorFlow

$ cd ~/Code/tensorflow
$ tensorflow/contrib/makefile/build_all_ios.sh

Pack necessary header and static library

$ cd ~/Code/tensorflow
$ ~/Code/TensorflowPod/pack.sh
$ ls tensorflow.tar.gz

Integrate TensorFlow as Pod

[Prerequisite] Install Cocoapods
```
sudo gem install cocoapods
```

Create or add pod into your project Podfile, which should look like

target 'DemoApp' do
    # Comment the next line if you're not using Swift and don't want to use dynamic frameworks
    use_frameworks!

    # Pods for DemoApp
    pod 'TensorflowPod', :podspec => 'https://raw.githubusercontent.com/lazToum/TensorflowPod/master/TensorflowPod.podspec'

end

Install Pod
```
pod install
```

Follow official demo app to develop, link

#include "google/protobuf/message_lite.h"
#include "tensorflow/core/framework/tensor.h"
#include "tensorflow/core/public/session.h"

tensorflow::GraphDef graph;
...

Apply hotfix

Issue #1740: No OpKernel was registered to support Op 'Switch'

$ sed  -i -- '98s/$/ m(bool)/' tensorflow/core/framework/register_types.h
$ git diff
    ...
    -#define TF_CALL_bool(m)
    +#define TF_CALL_bool(m) m(bool)

Issue #9476: No OpKernel was registered to support Op 'Less'

$ sed  -i -- '302,430s/__ANDROID_TYPES_SLIM__/__ANDROID_TYPES_FULL__/' tensorflow/contrib/makefile/Makefile
$ git diff
    ...
    - -D__ANDROID_TYPES_SLIM__ \
    + -D__ANDROID_TYPES_FULL__ \