Unable to create so file with the make file that has been provided

[Zumbalamambo]

Im trying to convert tensorflow c++ files into so file

Following is the make file as in the project

build:
    ndk-build

install:
    cp -r libs/armeabi-v7a/*.so ../src/main/jniLibs/armeabi-v7a/
    cp -r libs/arm64-v8a/*.so ../src/main/jniLibs/arm64-v8a/

clean:
    ndk-build clean

But it is not building so file. What am I missing?

[sladomic]

What error do you get?

[Zumbalamambo]

This is the error that im getting

rk-master/facerecognitionlibrary/jni-build/Makefile: line 1: build:: command not found
/Users/Zumbala/Documents/Android-Face-Recognition-with-Deep-Learning-Test-Framework-master/facerecognitionlibrary/jni-build/Makefile: line 2: ndk-build: command not found
/Users/Zumbala/Documents/Android-Face-Recognition-with-Deep-Learning-Test-Framework-master/facerecognitionlibrary/jni-build/Makefile: line 4: install:: command not found
cp: directory ../src/main/jniLibs/armeabi-v7a does not exist
cp: directory ../src/main/jniLibs/arm64-v8a does not exist
/Users/Zumbala/Documents/Android-Face-Recognition-with-Deep-Learning-Test-Framework-master/facerecognitionlibrary/jni-build/Makefile: line 8: clean:: command not found
/Users/Zumbala/Documents/Android-Face-Recognition-with-Deep-Learning-Test-Framework-master/facerecognitionlibrary/jni-build/Makefile: line 9: ndk-build: command not found
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[Zumbalamambo]

Thats the error that im getting. How will I be able to compile tensorflow cpp files to so file? or is it possible to import the entire raw c++ files into the library and try it without converting it to so file? I have tried asking this question in stackoverflow but no response.

[sladomic]

You need to add the Android Ndk path to your PATH (if on Linux/OSX). I think the Makefile is only supported for Unix systems (so no Windows).

• So download the Android Ndk
• Then add the path to the Ndk to the PATH
• Then test in terminal/cmd if the ndk can be found by typing "ndk-build -h" and hit enter
• after you have setup the Ndk, go to the jni-build directory using terminal and enter "make" and hit enter

[Zumbalamambo]

Yes Thank you .now executing the make file fires the following error message,

Android NDK: Could not find application project directory !    
Android NDK: Please define the NDK_PROJECT_PATH variable to point to it.    
/Users/Zumbala/Library/Android/sdk/ndk-bundle/build/core/build-local.mk:151: *** Android NDK: Aborting    .  Stop.

[sladomic]

@Zumbalamambo Did you try to execute "make" in the "jni-build" directory?

[Zumbalamambo]

Ok now i have tried executing in jni-build directory but it threw some error like,

ndk-build
Android NDK: WARNING:jni/Android.mk:tensorflow: non-system libraries in linker flags: jni/libs/armeabi-v7a/libprotos_all_cc.a jni/libs/armeabi-v7a/libprotobuf.a jni/libs/armeabi-v7a/libprotobuf_lite.a /Users/Zumbala/Library/Android/sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/libgnustl_static.a /Users/Zumbala/Library/Android/sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/libsupc++.a    
Android NDK:     This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES    
Android NDK:     or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the    
Android NDK:     current module    
Android NDK: WARNING:jni/Android.mk:tensorflow: non-system libraries in linker flags: jni/libs/arm64-v8a/libprotos_all_cc.a jni/libs/arm64-v8a/libprotobuf.a jni/libs/arm64-v8a/libprotobuf_lite.a /Users/Zumbala/Library/Android/sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/arm64-v8a/libgnustl_static.a /Users/Zumbala/Library/Android/sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/arm64-v8a/libsupc++.a    
Android NDK:     This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES    
Android NDK:     or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the    
Android NDK:     current module    
[armeabi-v7a] Install        : libjnilibsvm.so => libs/armeabi-v7a/libjnilibsvm.so
[armeabi-v7a] Compile++ arm  : tensorflow <= tensorflow_jni.cc
In file included from jni/tensorflow_jni.cc:31:0:
jni/genfiles/tensorflow/core/framework/step_stats.pb.h:9:42: fatal error: google/protobuf/stubs/common.h: No such file or directory
 #include <google/protobuf/stubs/common.h>
                                          ^
compilation terminated.
make[1]: *** [obj/local/armeabi-v7a/objs/tensorflow/tensorflow_jni.o] Error 1
make: *** [build] Error 2

I have tried installing brew protobuf too

[sladomic]

Did you follow exactly these steps? https://github.com/Qualeams/Android-Face-Recognition-with-Deep-Learning-Library/issues/1

It's important, that you use the right Protobuf version. Therefore download Tensorflow as follows:

git clone --recursive https://github.com/tensorflow/tensorflow.git

With --recursive you include the submodules (e.g. protobuf). Then after building, place all the files in the correct directory. And then execute make.

[Zumbalamambo]

I have downloaded it using git clone --recursive https://github.com/tensorflow/tensorflow.git. I have placed it within jni-build filder and tried make . Im getting the same error :(

[Zumbalamambo]

When i tried to build with bazel, I got this error Unexpected error reading .blazerc file '/Users/Zumbala/Documents/Android-Face-Recognition-with-Deep-Learning-Test-Framework-master/facerecognitionlibrary/jni-build/tensorflow/.tf_configure.bazelrc'

[sladomic]

Try first if you can build the TensorFlow Android Demo in general:

Go to the Tensorflow folder and execute: bazel build -c opt //tensorflow/examples/android:tensorflow_demo

[Zumbalamambo]

Okay now it works with make. Thank you

[sladomic]

I'm glad, that it works. For me it's the same. Everytime I upgrade to a new TensorFlow version, I first struggle with building even the simplest examples. This project has just too many dependencies :)